Still reproducible in 12.04. It seems that the QuickTime file format uses a 3x3 transformation matrix to encode a mapping from 'camera space' to 'display space'. In the case of simple 90° and 180° rotations that matrix is all zeros and (minus) ones. So, this should just be a case of getting the bytes of the transformation matrix and working out which way to do the rotation.
https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-56313 https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/QTFFChap4/qtff4.html#//apple_ref/doc/uid/TP40000939-CH206-18737 An algorithm might go like: parse bytes looking for 'mvhd' skip ahead 36 bytes read the next 36 bytes into a 3x3 matrix (4 bytes per element) calculate the rotation do the rotation during playback -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gstreamer0.10 in Ubuntu. https://bugs.launchpad.net/bugs/697756 Title: iPod and iPhone movies are played with incorrect orientation Status in “gstreamer0.10” package in Ubuntu: Confirmed Bug description: Movies made with iPods and iPhones are encoded with orientation information, because users hold them in arbitrary positions when recording movies (they are meant to, there is no right way to hold an iDevice, apparently. Unless you are making a call on an iPhone 4). At the moment I see upside-down and sideways movies sent from iPhones and iPods. If you hold the device on its side while recording a movie, playback should recognise this and have gravity in the recording represented in the most sensible representation on the display device (in most fixed monitors I guess this is positive on the Y axis, if (0,0) is on the top left). I.e. match gravity in the recording to gravity on playback. ProblemType: Bug DistroRelease: Ubuntu 10.10 Package: libgstreamer0.10-0 0.10.30-1build2 Uname: Linux 2.6.37-rc8-linus x86_64 Architecture: amd64 Date: Wed Jan 5 17:08:02 2011 ExecutablePath: /usr/bin/totem InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100412) ProcEnviron: LANG=en_GB.utf8 SHELL=/bin/bash SourcePackage: gstreamer0.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gstreamer0.10/+bug/697756/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
