from mkv to mp4 without recode

[fenomeno83]

I want convert a movie from mkv to mp4 without recode...
I extracted h264 and aac with mkvestrackgui (that uses mkvestract)...
after I tried to merge in mp4 with yamb(that uses mp4box)but appers:
"you must set a FrameRate for RawAVC streams otherwise MP4Box will use his own default value (25.000)..."

How can I solve?
thanks

[desta]

enter a framerate......

[Ranguvar]

What the above guy said.

MKVtoolnix, MediaInfo, MPC, can all tell you the framerate.

See, the H.264 video track does not contain the framerate, which is needed to play (obviously). The container (MP4, MKV, AVI, TS, etc.) has this information. When you demuxed that video track, it no longer knew its framerate. So you have to tell that to YAMB in order for it to make a correct MP4.

[fenomeno83]

Thanks