Merge MP4 video with M4A audio?

[Wischmop]

Hello,

I have a MP4 video with M4A audio and would merge it in a single MP4-file

I tried Avidemux but get an error that Avidemux can´t use this file as an audio track.

Are there other tools which can do it?

Thank you

[Alex_ander]

Try My MP4Box GUI to mux two elementary streams (make sure both are elementary ones). Most likely, first you'll need to demux video from mp4. It also happens that m4a audio is actually in mp4 container (explore this in case of a problem). https://www.videohelp.com/software/My-MP4Box-GUI

[Wischmop]

Thank you Alex, works good for me

[dvdvideomedia]

you can try this freeware, free video cutter joiner, thanks
download here: dvdvideomedia.com