I tried every freeware I found , but failed. Although I can use MKVToolNix to replace the audio and need not converting the video, but I only got a MKV file. But if I still want to get a MOV file, I have to convert the MKV into the MOV format.
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Qt pro. Choose to disable stream(s) and save-as. Then open new audio, copy whole stream, then open saved (no audio) vid and "add stream" (it is similar to paste, but with Shift or Ctrl key, etc added). Then do a save-as.
I have said it before: if you work with MOV files, you do yourself a disservice not getting qtpro, even if it isn't freeware.
Maybe ffmpeg also,
ffmpeg -i audio.m4a -i video.mov -map 0:0 -map 1:0 -acodec copy -vcodec copy -shortest output.mov
See more ffmpeg examples at http://cfc.kizzx2.com/index.php/muxing-audio-and-video-with-ffmpeg/
Last edited by Baldrick; 1st Oct 2013 at 04:31.
But I found that the size of the final MOV file is 330,440 KB, while the original mov is 348,284 KB. I checked the audio size, and I am sure that the audio sizes in the two MOV files are almost the same. So what happened?
Almost the same? That is not exact the same.
But as long as you are using -acodec copy and -vcodec copy is nothing reconverted.