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by _Gyan_ 1882 days ago
The first one will re-encode.
1 comments
pvg 1882 days ago
Right but it's conceivable the default behaviour might change, the explicit one is quite unlikely to.
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_Gyan_ 1882 days ago
It hasn't, since ffmpeg's inception. It's very unlikely - it would require that ffmpeg verify codec compatibility with the output muxer. Not all muxers have registered a codec tags list , so that can't happen.
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