Ticket #171 (closed defect: duplicate)

Opened 2 years ago

Last modified 2 years ago

Matroska skipping with h.264 video in 1.0b1

Reported by: monkeyvoodoo Assigned to:
Priority: normal Milestone:
Component: Perian-Main Version: 1.0b1
Severity: normal Keywords:
Cc:

Description

I have a Matroska file I encoded using x264 that experiences momentary skipping at a given point in the file. Putting the video from the Matroska file into an MP4 file (using mkvextract and then mp4box), the skipping does not occur. Also, the skipping does not occur in playback of the Matroska file using VLC.

This problem occurs on both a dual-core Intel Mac mini 1.66GHz, as well as a PowerBook? G4 1.67GHz - neither of which shows a lack of available CPU cycles in Activity Monitor during playback.

The problem occurs shortly after the 5:00 mark in the example file, and sometimes causes the video to freeze for up to a few seconds, though usually it's only for a few frames. The video frames do individually play back fine by stepping through the file with the arrow keys.

There doesn't appear to be any debug output, or I would include it. Please let me know if you need any more information.

Example File [68.8MB]: http://www.monkeyvoodoo.net/~eclark/Ichigo_Mashimaro_01.mkv

Change History

04/26/07 16:38:30 changed by astrange

Well, Activity Monitor isn't quite accurate enough. It's probably a symptom of #125.

04/27/07 13:11:50 changed by dconrad

  • status changed from new to closed.
  • resolution set to duplicate.

This actually seems to be a symptom of the current situation of #30. Basically, edit lists are inadvertently created, and sometimes cause frame skips at their boundaries (300.5 seconds in in this case.) This unfortunately won't be fixed 100% until that ticket is fixed.