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Check for variable frame rate with FFmpeg vfrdet
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What this guide covers
For editors checking a phone or screen recording before editing or syncing with audio. You end with a report of constant versus variable frame counts and delta statistics. It is based on the FFmpeg manual, which gives no options or thresholds, and no command was run.
More about this guide
Guide ID: art_01M6W6A16AQR4M98F2KJH6VGF3
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Guide title
Check for variable frame rate with FFmpeg vfrdet
Coverage
For editors checking a phone or screen recording before editing or syncing with audio. You end with a report of constant versus variable frame counts and delta statistics. It is based on the FFmpeg manual, which gives no options or thresholds, and no command was run.
Example
A hypothetical phone clip run through the filter to read the counts; nothing was run and no counts were seen.
Useful starting points
- Let the run finish; the report is printed at the end of processing.
- A few variable frames in a mostly constant file may be timestamp jitter, so read the delta statistics before conforming.
- The manual gives no threshold, so confirm doubtful results with another tool such as ffprobe.
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