Short description of error
Blender will often crash when the VSE plays back a video file with AC3 audio from some point other than the start of the video.
Only happens with a file with audio and video (just importing an AC3 file isnt enough).
May only happen with h264/ac3 combination, I have not tested it with any other video codecs.
The longer the video, the more likely the crash... a 5 minute video will not trigger it, a 11 minute video will sometimes trigger it, and a 1.5 hour video will always trigger it.
The crash will be triggered on playback or scrubbing if audio scrubbing is enabled (also, scrubbing with the audio scrubbing not enabled will not crash).
Aggressive play/pause and scrubbing is more likely to trigger the crash on shorter video files.
Deleting the video track before playback will not prevent the crash, deleting the audio track will.
Exact steps for others to reproduce the error
Switch to the VSE layout
Load in a long video file with h264 video and ac3 audio
Move the play cursor to a point after the start of the video
Play the VSE