[bug?!] no time length/ wrong duration for mp4 & m4a DASH file (download from youtube)
about: downloaded DASH videos from youtube with: mozilla firefox 35.0.1 addon flashgot 126.96.36.199.1-signed
file 1: content=visuals; size=41,2MB; resolution=1920x1080p; extension=mp4; FPS=30; length=1min32s uploaded to zippyshare.com: http://www61.zippyshare.com/v/kPBDti7x/file.html
file 2: content=audibles; size=2,82MB; extension=m4a; length=1min32s uploaded to zippyshare.com: http://www91.zippyshare.com/v/SRKpzDbf/file.html
link to corresponding youtube video: https://www.youtube.com/watch?v=2GoOd3p47lo
1st problem: when i open them with VLC MediaPlayer TwoFlower 2.1.5-win32 [2014_07_26] playback is fine, but trying to merge both files into one new via VLC recording, i ran into desync issues.
2nd problem: checked new versions of VLC (all later than 2.1.5, final releases & git builds), but always encountered playback issues with the 2 downloaded unmodified files described above resulting in no time length or wrong duration.
link to corresponding thread in VLC forum: https://forum.videolan.org/viewtopic.php?f=14&t=127972