I'd vote for asking in the MPEG-4- ASP forum but it's probably no big deal. It might be easier to use MediaInfo to post the relevant info.
http://mediaarea.net/en/MediaInfo
Or a link to the current portable version.
http://mediaarea.net/download/binary...utInstaller.7z
Open a file with the MediaInfo GUI and use the View menu to change to text or html view (or set one of them as the default) than copy and paste the info for working and non-working files).