Design Video Preview on Hover

Medium35 min
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understanding•7 min read

Video Preview Context and Browse UX Goals

How Video Preview Context and Browse UX Goals (understanding) informs Video Preview on Hover architecture and interviewer depth.

Video Preview Context and Browse UX Goals

Design hover video previews for Netflix/YouTube/TikTok-scale browse grids: short silent clips on thumbnail hover, sprite fallbacks, CDN delivery, and strict preview-start latency.

Problem framing
  • 2B videos in catalog; 400M DAU; peak 1.2M concurrent browse sessions
  • p95 preview_start_ms < 180ms from dwell; p99 < 350ms; 99.5% tiles show motion within 250ms
  • 3–8 second silent preview windows; WebP sprite + MP4 ladder (240p/360p)
Design choices
  1. Precompute preview clips on transcode.completed with versioned clipVersion
  2. Tile hover API returns signed manifest + sprite sheet URL
  3. Client dwell 120ms before prefetch; debounce rapid grid scroll
  4. Per-user rate limit 30 preview starts/minute on Redis token bucket
Deep dive

Explain how video preview context and browse ux goals affects sprite cache hit ratio, hot-key sharding on viral videos, clip transcode cost, and engagement metrics without stealing main-player bandwidth.

javaOne Dark Pro
1public final class PreviewWindowPlanner {
2  private final int maxWindows;
3  private final double minSecBetween;
4 
5  public PreviewWindowPlanner(int maxWindows, double minSecBetween) {
6    this.maxWindows = maxWindows;
7    this.minSecBetween = minSecBetween;
8  }
9 
10  public boolean allowWindow(double videoSec, int windowsScheduled) {
11    if (windowsScheduled >= maxWindows) {
12      return false;
13    }
14    return videoSec >= minSecBetween * (windowsScheduled + 1);
15  }
16}
pythonOne Dark Pro
1from dataclasses import dataclass
2 
3@dataclass(frozen=True)
4class PreviewClipMeta:
5    start_ms: int
6    duration_ms: int
7    rendition: str
8    cdn_path: str
9 
10def pick_rendition(chain: list[PreviewClipMeta], target_kbps: int) -> PreviewClipMeta:
11    for clip in chain:
12        if clip.rendition.endswith(f"_{target_kbps}k"):
13            return clip
14    return chain[0]
typescriptOne Dark Pro
1interface HoverPreviewSession {
2  videoId: string;
3  tileIndex: number;
4  clipVersion: string;
5  signedUrl: string;
6}
7 
8export function shouldPrefetchClip(
9  session: HoverPreviewSession,
10  dwellMs: number,
11  thresholdMs: number,
12): boolean {
13  if (dwellMs < thresholdMs) {
14    return false;
15  }
16  return session.clipVersion.length > 0;
17}
Interviewer positioning

Tie every component to preview_start_ms, CDN hit ratio, and cost per thousand hovers—never hand-wave "just play the video on hover."

Extended Notes
  • Appendix note 1: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 2: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 3: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 4: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 5: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 6: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 7: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 8: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 9: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 10: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 11: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 12: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 13: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 14: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 15: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 16: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 17: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 18: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 19: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 20: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 21: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 22: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 23: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 24: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 25: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 26: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 27: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 28: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 29: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 30: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 31: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 32: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 33: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 34: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 35: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 36: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 37: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 38: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 39: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 40: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 41: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 42: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 43: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 44: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 45: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 46: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 47: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 48: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 49: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 50: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 51: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 52: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 53: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 54: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 55: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 56: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 57: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 58: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 59: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 60: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 61: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 62: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 63: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 64: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 65: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 66: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 67: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 68: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 69: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 70: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 71: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 72: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 73: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 74: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 75: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 76: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 77: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 78: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 79: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 80: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 81: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 82: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 83: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 84: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 85: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 86: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 87: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 88: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 89: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 90: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 91: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 92: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 93: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 94: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 95: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 96: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 97: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 98: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 99: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 100: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 101: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 102: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 103: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 104: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 105: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 106: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 107: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 108: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 109: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 110: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 111: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 112: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 113: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 114: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 115: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 116: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 117: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 118: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 119: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 120: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 121: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 122: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 123: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 124: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 125: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 126: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 127: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 128: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 129: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 130: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 131: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 132: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 133: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 134: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 135: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 136: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 137: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 138: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 139: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 140: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 141: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 142: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 143: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 144: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 145: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 146: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 147: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 148: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 149: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 150: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 151: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 152: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 153: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 154: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 155: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 156: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 157: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 158: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 159: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 160: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 161: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 162: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 163: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 164: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 165: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 166: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 167: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 168: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 169: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 170: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 171: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 172: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 173: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 174: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 175: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 176: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 177: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 178: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 179: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 180: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 181: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 182: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 183: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 184: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 185: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 186: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 187: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 188: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 189: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 190: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 191: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 192: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 193: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 194: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 195: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 196: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 197: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 198: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 199: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 200: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 201: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 202: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 203: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 204: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 205: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 206: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 207: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 208: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 209: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 210: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 211: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 212: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 213: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 214: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 215: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 216: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 217: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 218: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 219: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 220: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 221: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 222: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 223: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 224: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 225: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 226: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 227: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 228: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 229: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 230: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 231: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 232: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 233: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 234: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 235: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 236: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 237: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 238: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 239: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 240: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 241: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 242: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 243: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 244: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 245: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 246: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 247: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 248: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 249: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 250: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 251: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 252: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 253: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 254: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 255: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 256: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 257: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 258: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 259: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.
  • Appendix note 260: hover dwell thresholds, sprite sheets, WebP ladders, FFmpeg clip jobs, signed CDN URLs, Redis session caps, prefetch manifests, p95 preview_start_ms SLIs, and FinOps per thousand hovers for video preview context and browse ux goals.

Why interviewers care

Video Preview on Hover interviews reward crisp scope, explicit trade-offs, and failure stories—not generic microservice diagrams.

Interview checkpoint

Name one failure story for Video Preview Context and Browse UX Goals that proves you understand real outages, not happy-path diagrams.

Key Highlights

  • •Dwell-gated prefetch avoids thundering herd on viral drops
  • •Versioned clip ladders enable instant rollback of bad previews
  • •Sprite sheet fallback when MP4 ladder cold on edge POP
Interview Tip
State preview_start_ms and hover QPS before drawing boxes.
What Impresses
Dwell debounce + signed manifests + clipVersion rollback story.
Avoid This
Do not stream full bitrate video on every thumbnail hover.

Section Rescue Kit

Buzzwords to use:

Sprite sheetclipVersion

Safe statements:

  • "Preview_start_ms is my north-star SLI for browse UX."
  • "I always separate sprite fallback from MP4 ladder on the critical path."
Design Video Preview on Hover - System Design | WinJob | WinJob