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Drop one MOV or two hundred. Batch conversion is not a paid feature here.
Footage from a Mac has to go into an old Windows editing suite or a piece of hardware from the AVI era.
The QuickTime streams are decoded and re-encoded into codecs AVI supports, typically Xvid video with MP3 audio.
AVI cannot carry a variable frame rate, and iPhone and screen-recorded MOV files frequently have one. Converting forces a constant rate, which either drops frames or duplicates them, and long clips drift out of sync as a result.
Convert with an explicit constant frame rate and let the tool resample properly rather than just relabelling the timestamps.
Only when a specific tool requires it. MP4 is better in every measurable way.
Drop one MOV or two hundred. Batch conversion is not a paid feature here.
Audio Video Interleave is lossless, so nothing is thrown away in the conversion.
Converted and deleted the moment it finishes. Never written to permanent storage.