I fixed it, but I still consider it a bug. Starting it from the visual interface gave no indications of what was wrong.
Then I started it from the command line. After searching all over the web, and much trial and error: In VLC, I switched Tools -> Preferences -> Video -> Output from "Default" to "X11 video output (XCB)" which gave some errors, so I installed, by CPAN, X11::Protocol.pm Then I followed the instructions here: http://forum.videolan.org/viewtopic.php?f=13&p=237083 that is, Remove any Debian-Multimedia.org entries from the APT sources list via your package manager, or from the command line: sudo vi /etc/apt/sources.list sudo apt-get update sudo apt-get remove libavutil* Reinstall VLC and other packages you are interested in, from the official Debian repositories, e.g., sudo apt-get install vlc sudo apt-get install gnome (or whatever it removed) sudo apt-get install gimp " sudo apt-get install k3b " sudo apt-get install ... " However, I still consider it a bug because there was no error message that gave me a clue. I had not had any debian-multimedia entries in /etc/apt/sources.list since several versions back of Debian (maybe Debian 5, and my current system is version 7). The "sudo apt-get remove libavutil*" also removed gnome, gimp, k3b, gnomebaker, vlc and its dependencies, and many other packages! The removal of so many other packages was quite alarming. I was lucky that my terminal window kept a large enough scroll buffer that I could capture them. One by one, I reinstalled them all. So I would suggest anyone following this to start a script before doing "sudo apt-get remove libavutil*" so you know what you have to restore. This also reinstalled the earlier version, not the unstable version. VLC media player 2.0.3 Twoflower (revision 2.0.2-93-g77aa89e) A few packages were not found, like gnomebaker, but so far I haven't used them. VLC still appeared not to work after all this, but then I rebooted, and then it worked. Although whenever I (re)start a video, the VLC window reverts to the small size, but the window corner can later be dragged to stretch it. I think this is still a bug, because nobody should have to go through all of this. I still have this error: [swscaler @ 0x99b3900] No accelerated colorspace conversion found from yuv422p to bgra. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]

