Ubuntu
avidemux package

avidemux, there are no keyframes during recoding a video

Bug #331345 reported by Thomas Templin
10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Avidemux
New
Undecided
Unassigned
avidemux (Ubuntu)
Incomplete
Undecided
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Bug Description

Binary package hint: avidemux

Ubuntu 9.04 Jaunty Jackalope
Version: avidemux 1:2.4.4-0.0ubuntu1

After the upgrade from 1:2.4.3-0.0ubuntu1 I noticed the following

Given:
A 1,8GB MP2 recording from a Haupauge PVR 150.
An individual recoding profile as in the attached file mp4-DI-HQ.js

Result:
- recoding is very slow. (approx 2 frames/sec, before it was gt 4.x frames/sec for the same file)
- the resulting file is much much bigger (1,2GB from a 1,8GB PAL MP2 Sttream, befrore it was 280MB)
- playing the resulting file mplayer complains about startframe not beeing a keyframe

Revision history for this message
Thomas Templin (coastgnu) wrote :
Revision history for this message
Thomas Templin (coastgnu) wrote :

Pardon me, I attached the wrong profile

Revision history for this message
Alessio Treglia (quadrispro) wrote :

Report to upstream:

http://bugs.avidemux.org/index.php?do=details&task_id=569

Changed in avidemux:
status: New → Triaged
Revision history for this message
Daniel James (daniel-64studio) wrote :

I duplicated this today, encoding an MPEG-4 file with x264 resulted in a warning from MPlayer:

warning: first frame is no keyframe

This was after carefully using the key frame seek buttons in avidemux to find key frames to cut on. The first few frames of the video are missing colour information. vlc makes a better job of playing the video clip and doesn't complain, but there is still some distortion visible in the first few frames. So I do think this is a bug in avidemux or x264.

Revision history for this message
Alessio Treglia (quadrispro) wrote :

Can anyone confirm this on Karmic/Lucid?

Changed in avidemux (Ubuntu):
status: Triaged → Incomplete
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