How to sync mp4 video to mp4 audio track

[Echa]

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There are already mp4 video files downloaded. Now I want to sync the multi channel audio with this file separately. For this I have downloaded the YAMB and HANDBRAKE but both are very complicated and confusing. Is there any other options? Is there any software that will take the video from one way, get rid of the audio and add new audio track and save it as new mp4 file?

[Radames]

After much research, I finally found a tool that offers a number of file handles MP4 , and it's free too. The tool is called MP4Box and is part of GPAC free package (Project on Advanced Content). It is a command line tool and is only available as source code. If you're using Windows, make lists in GUI versions of this tool, for example, Yamb (Yet Another MP4Box UI) .

[Anirvinya]

I think the computer is a fair bit to play such videos. Perhaps with the CoreAVC codec or DivX7 can "squeeze" a little more processor than with native codecs KMP, nor I can guarantee you. The mode "Superspeed" you also could help improve performance somewhat (right click -> Advanced Video -> superspeed mode or Alt + F).

[little-Jacqueline]

I think that it is completely possible to strip the audio with either Audacity otherwise Avidemux. After that you can use the Audacity for editing new audio track. Open the the audio track into Avidemux plus re-compress.