AVIDemux to Join, Get Green Video

[ntallman]

I'm trying to use Avidemux to concatenate two MP4 files. After appending the second video and choosing "MP4 Muxer" as Output Format, it fails. When I choose "MP4v2 Muxer" it finished, but in the resulting video, when it gets to the appended video (the main content), it's all green, with audio.

Can anyone help? I've tried several FFMPEG options, direct from CLI, but they all fail too.

[Baldrick]

Try mymp4boxgui.

[ntallman]

Thanks, Baldrick, but that doesn't work either. In VLC, the second video appears in a separate window, sans audio, and starts simultaneously. In Windows Media Player, it only shows the first video.

[Baldrick]

Did you join the files under the Join tab? You shouldn't add them in the Mux tab as it will create a video with two video tracks.

[ntallman]

The mymp4boxgui shows this in the log:

Begin: 8/14/2013 11:39:37 AM, End: 8/14/2013 11:42:32 AM, Difference: 00:02:55, STATUS: Complete
Appending file F:\ms0603\Videocasettes_mp4\slates\VT-854.mp4
No suitable destination track found - creating new one (type vide)
No suitable destination track found - creating new one (type soun)
Appending file F:\ms0603\Videocasettes_mp4\vt0854_edit.mp4
Cannot concatenate files: Different AVC Level Indication between source (30) and destination (42)
No suitable destination track found - creating new one (type vide)
No suitable destination track found - creating new one (type soun)
Saving F:\ms0603\Videocasettes_mp4\slates\VT-854.mp4-joined.mp4: 0.500 secs Interleaving

[ntallman]

Yes, I used the join tab.

[Baldrick]

Because

Cannot concatenate files: Different AVC Level Indication between source (30) and destination (42)

You could try force change the avc/h264 level in the mp4 with H264 Level Editor. Change both to 4.2. And then try join. I'm not sure how well it will work though.

[ntallman]

I though that was the issue. Which video is source and which is destination? (Since I've got two sources and am creating the destination.) Is the AVC level indication a h264 version number?