It's looking hardware-related, and I apologize for not being able to provide more detailed information about the source of the problem earlier. Right now at least, changing hardware-accelerated coding fixes the problem. I have an Nvidia GeForce 9650M GT GPU, with Nvidia driver version 331.113. The first and default option for hardware decoding is VDPAU, and selecting a different option (VA-API video decoder via DRM, or via X11) or disabling it lets all h264 videos be played with the XVideo XCB display module.
This is still different from a week or two ago though. After testing, I found that VA-API video decoder via X11 was crashing on a windows media video file, or I wouldn't see it as a problem if VDPAU isn't working. It would be easier for me to report problems properly if I knew to what extent they could depend on hardware. I don't know if my bugs for hardware decoding, output modules etc. are hardware specific. I also found that videos that have a resolution change, through h264_mp4toannexb, cause VLC to crash if it's using hardware decoding. This is a different bug, and bugs are supposed to reported separately, but~ 'VA-API video decoder via DRM' only works in this case because it's failing to find a hardware decoding module. The others crash with a segmentation fault after the second video. If the second video has audio, it plays the audio and then crashes when it's finished with VDPAU (which doesn't display the video that accompanies the audio, possibly only because of the bug in the original report). If it's VA-API via X11, it crashes immediately at the second video before playing any audio from it. I would upload a sample video if requested. This is the output from ffmpeg with -f concat -auto_convert 1, which inserts the h264_mp4toannexb bitstream filter to H.264 streams in MP4 format. If this is done without the -auto_convert option, vlc simply stops playing the file, or rewinds it if on loop, without crashing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1440254 Title: Recent update broke XVideo/XCB output for h264 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vlc/+bug/1440254/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
