Ubuntu

Green and black dots appear in video playback

Reported by themusicalduck on 2010-08-30
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xvidcore (Ubuntu)
Undecided
Unassigned

Bug Description

While playing some videos, green spots and blurs will appear overlaying the video. It happens particularly badly when the video is dark. When the video is light, you can also sometimes see black dots, but much less than green dots and blurs.

While playing a .mkv file, VLC shows the video codec as "MPEG-4 Video (XVID)". It's hard to know if it happens with other codecs or if it has anything to do with codecs at all, but it doesn't seem to happen on all videos. I have seen it happen while playing flash videos on the internet as well, but much less often.

I have a fully updated Maverick install, but this bug has existed for me since Lucid (it didn't in Karmic).

I will attach two screenshots that demonstrate the problem. In the second attachment, the dots in the middle of the screenshot are part of the actual video, but the green dots around the edge in a straight line are the bug.

I'm using the restricted Nvidia driver. I think the problem happened when I used Nouveau too, but I can't remember for certain. Last time I tried to disable the restricted driver, my system broke, so I don't want to try it and find out.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: libxvidcore4 2:1.2.2+debian-1ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-19.28-generic-pae 2.6.35.3
Uname: Linux 2.6.35-19-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Mon Aug 30 02:55:01 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100819)
ProcEnviron:
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: xvidcore

themusicalduck (themusicalduck) wrote :
themusicalduck (themusicalduck) wrote :
themusicalduck (themusicalduck) wrote :

This bug had disappeared from Maverick but since I upgraded to Natty it has started happening again.

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