The crash appears to have occurred after trying to retrieve the cursor image from X via XFixesGetCursorImage(), when it doesn't check for a null pointer. Looking at the xserver code, it has several situations where the call can fail, and presumably one of those has happened and the cursor is left undefined.
I wonder if this is the same as https://ffmpeg.org/trac/ffmpeg/ticket/1738, and if the fix for that issue would solve it here. However, I'm not reproducing this on Precise, using the command: ffmpeg -f x11grab -r 30 -s 1366x768 -i :0+0,0 -ac 2 -acodec flac -ab 128k -threads 0 /tmp/tmpKwF7cN.mkv ** Bug watch added: FFmpeg Multimedia System #1738 https://ffmpeg.org/trac/ffmpeg/ticket/1738 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/844470 Title: [libavdevice/x11grab] ffmpeg crashed with SIGSEGV in av_read_packet() To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libav/+bug/844470/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
