On 2021-12-04 07:17 am, Toerless Eckert wrote:
Hi
I am trying to set up ffmpeg to convert media file, mostly container format,
e.g.: mp4/avi to mkv or the like (no reencoding).
I notice that the same ffmpeg run creates binary different files
every time it is run (on the same input). I would like the output file
to be reproduceable the same. What i see is that UUIDs for tracks for example
are randomnly generated.
I found in documenttion --disable-random, but no ffmpeg build i can find
seem to have this option.
Whats the suggested option to disable this randomnness (or see it predictably) ?
The general option is -bitexact.
This doesn't apply to your usage but note that there are some encoders
which aren't deterministic, so some variance can be seen.
Regards,
Gyan
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