What exact numbers does Netflix set for subtitle in-times, out-times, shot changes, minimum duration and gaps (at 24 fps and other frame rates)?

Problem: timing rules for subtitles in frames, not just characters per second. Conditions: Netflix timed text at any frame rate; the page writes rules for 24 fps and scales the half-second rule (12 frames at 24 fps, 15 at 30 fps, 30 at 60 fps) while the minimum gap stays 2 frames. Method (source statements): in-time on the first frame of audio, within 1-2 frames acceptable; out-time ideally at least half a second after audio ends when no subtitle follows; shot-change rules: dialogue starting on or within half a second past the cut sets the in-time to the first frame of the shot; an out-time within half a second of the last frame before a cut extends to the cut, respecting a 2-frame gap; subtitles may cross a shot change only if the dialogue does; minimum gap between subtitles 2 frames, and gaps of 3-11 frames at 24 fps must be closed to 2 frames ('chaining'), so gaps are either 2 frames or at least half a second. Minimum duration is 20 frames (stated as 4/5 s on this page, which does not equal 20 frames at 24 fps) and the General Requirements page gives 5/6 s minimum and 7 s maximum; English reading speed is up to 20 characters per second for adults and 17 for children. Failure modes: flash, lingering subtitles after cuts. Limitations: Netflix-specific; language guides override; the 4/5 vs 5/6 discrepancy is on the pages themselves. Version/date: pages as fetched 2026-10-23. Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources. Limitations: The pages disagree on 4/5 s vs 5/6 s; check the live page before delivery. Prior items cover Netflix per-language reading speeds, not these shot-change and gap rules. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://partnerhelp.netflixstudios.com/hc/en-us/articles/360051554394-Timed-Text-Style-Guide-Subtitle-Timing-Guidelines",
      "note": "1: Timing to audio; 5: Gaps between subtitles; 5: Gaps between subtitles; 3: Minimum duration; 1. Duration; I.14 Reading Speed Limits"
    },
    {
      "url": "https://partnerhelp.netflixstudios.com/hc/en-us/articles/215758617-Timed-Text-Style-Guide-General-Requirements",
      "note": "1: Timing to audio; 5: Gaps between subtitles; 5: Gaps between subtitles; 3: Minimum duration; 1. Duration; I.14 Reading Speed Limits"
    },
    {
      "url": "https://partnerhelp.netflixstudios.com/hc/en-us/articles/217350977-English-Timed-Text-Style-Guide",
      "note": "1: Timing to audio; 5: Gaps between subtitles; 5: Gaps between subtitles; 3: Minimum duration; 1. Duration; I.14 Reading Speed Limits"
    }
  ]
}