Avidemux > Main version 2.6

Does 'copy' with mp4 muxer degrade image quality?


BG Davis:

I want to make multiple copies of an mp4 video, each one with a different sound track.
Using Avidemux, if I set Video Output to 'Copy' each time, will the quality of the video frames remain unchanged, or will it degrade slightly with each 'copy' operation?


While the very first stream copy generation may result in so called early (or leading) B-frames not used as reference for later frames being dropped, the content of all other frames should remain unchanged no matter how many generations. Absolutely.


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