[Bug 738681] qtdemux: does not detect orientation

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=738681

--- Comment #6 from Thiago Sousa Santos <thiagossantos at gmail.com> ---
The matrix in the file in ubuntu's launchpad is actually doing a rotate-90 +
vertical flip as Sebastian pointed out. The vertical axis now goes from 0 to
-width, meaning it goes into the opposite direction. This is supposed to
indicate it should be flipped.

Every player I tried seems to ignore that (vlc, quicktime, ios quicktime). So
either we are not interpreting the spec correctly or this seems to be ignored
everywhere. Ignoring it in gstreamer would mean that it would be impossible to
fully support affine transforms as they were supposed to be.

Even implementing the flip would be weird as we would be showing the images in
the correct dimensions but flipped, users wouldn't be happy I guess.

Are there samples out there generated without ubuntu phone that have this same
behavior? I generated some with an ipad and they seemed to be correctly
indicating only the rotation.

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