[Solved] MP4Box muxing to m4v/mp4 - Video track has no data size (-NA- in QT player)

Due to the missing data size most editing functions of Quicktime Pro cause errors. Playback and seeking however is ok, as is the duration. Command used to mux is: Code:

try with .mp4 extension and without ipod thingie

Thanks bond, for the suggestions. The extension and ipod guid do not change the behavior. Meanwhile I tried several multiplexers, including mp4creator, mp4creator-qtf, NicMp4box and x264's built-in muxer. All show the data size -NA- phenomenon. (strangle only on the h.264 track, aac audio has a data size) The only muxer which "knows" how to set the data size for all tracks is Handbrake. It can even mux AC3 in. But the Handbrake team seems not to be willing to give a video pass thru or mux only option. I don't know, if an atom is needed to show the data size. I am currently browsing the libmp4v2 code, which can do the trick.

Hi Crypto, I've been seeing this particular MP4box issue for quite some time. It only seems to happen with AVC encodes containing B-frames. From what I understand, FFmpeg is able to generate .MP4 muxes that are more QuickTime compliant ;) I've been meaning to to inform Falco about it...

Hi SeeMoreDigital, I forgot about FFmpeg. Thanks for reminding me. I will check it out.

Please let me know how you get on... I'd love to have/see a simple GUI for FFmpeg that's able to generate basic .MP4/.MOV muxes. Cheers

Hi Crypto, This is great news. Do you have a muxing application with GUI I can try out?

No, sorry. I've just modded mp4creator. But I can throw some gui together. I will provide a mockup for discussions.

what about submitting a patch to the mpeg4ip source?

Hi bond, I will. But the patch needs some testing. It is currently a one-liner. LOL.