Subtitle guides
Most subtitle files fail QC for the same four reasons: lines that are too long, text that reads too fast, cues that overlap, and timing that drifts after a frame rate change. Each guide explains one of them, cites the Netflix and BBC guidelines where they apply, and ends with a way to fix the problem in your own file. Start with the SRT fixer to see what can be repaired automatically, and the QC checklist for what still needs a person.
- SRT fixer: repair subtitle files automaticallyWhat gets fixed in the file and against the delivery rules, a worked example, and what no automatic fixer can do.
- Subtitle QC checklist: what to check before you deliverWhich checks software can find and fix, which need the picture and sound, and the Netflix and BBC limits.
- Subtitle reading speed: what CPS means and how to fix fast subtitlesCharacters per second explained, the Netflix and BBC limits, and a CPS calculator.
- Subtitle line length: how many characters per line, and where to break42 or 37 characters, how many lines, the line break rules, and a line balancer to try.
- How to fix overlapping subtitlesWhy cues overlap, the two frame gap rule, and how to close every overlap in a file at once.
- Subtitles drifting out of sync: when you need a frame rate conversionDrift or offset, 23.976 to 25 fps explained, and a drift calculator that tells you which fix you need.
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