[Bug 777540] isomp4: Unable to create streams playable with MSE

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=777540

--- Comment #9 from Andreas Frisch <gnome-bugzilla at dreambox.guru> ---
this looks strange but may be interesting:
for a test file generated with
$ gst-launch-1.0 videotestsrc pattern=ball num-buffers=1000 ! timeoverlay !
video/x-raw,framerate=30/1,width=1280,height=720 ! videoconvert ! queue
max-size-buffers=1 ! x264enc speed-preset=superfast tune=zerolatency
key-int-max=30 b-adapt=0 option-string=scenecut=0 ! video/x-h264,profile=main !
m. audiotestsrc num-buffers=1000 ! audioconvert ! faac ! queue ! m. mp4dashmux
name=m streamable=true faststart=true fragment-duration=500 ! filesink
location=ball-h264-main-aac-dash.mp4

remuxing throws a bunch of warnings
$ MP4Box -dash 10000 -frag 1000 -rap ball-h264-main-aac-dash.mp4
[iso file] Box "...." is larger than container box
[iso file] Box "avc1" size 177 invalid (read 181)
[iso file] Box "...." is larger than container box
[iso file] Box "mp4a" size 79 invalid (read 83)
[iso file] Box "...." is larger than container box
[iso file] Box "avc1" size 177 invalid (read 181)
[iso file] Box "...." is larger than container box
[iso file] Box "mp4a" size 79 invalid (read 83)
[iso file] Box "...." is larger than container box
[iso file] Box "avc1" size 177 invalid (read 181)
[iso file] Box "...." is larger than container box
[iso file] Box "mp4a" size 79 invalid (read 83)

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