Garbage & crash with odd video sizes

For questions and discussion that is NOT (I repeat NOT) specific to a certain Operating System.
worstusernameever
New Cone
New Cone
Posts: 8
Joined: 19 Jun 2009 16:55

Garbage & crash with odd video sizes

Postby worstusernameever » 19 Jun 2009 17:21

Hi.

VLC exhibits some odd problems when playing video files that have an odd size (e.g., 320x239) in some codecs.

With the DirectX output module, it overlays a centered vertical band of flickering yellow and purple garbage on top of the video. I don't think it's decoding wrong, because the garbage is unmoved by some filters (e.g., the waves effect). It annoyed me for a very long time until I discovered that it was unique to the DirectX output mode. But if I switch to OpenGL or plain Windows GDI output, it doesn't draw the garbage but instead puts a bright green line at the bottom of the video.

With all output modules (and I assume other OS's), there are other problems. Resizing the window while the video plays can cause it to suddenly go all white then stop playing. Turning on the rotate filter causes VLC to immediately crash.

I'm fairly sure I've seen some odd-sized videos in some codecs that work fine. I know I've observed this bug with at least FLV1, VP6F, and MP4V (as reported by VLC's codec information window). It's been happening for as many VLC versions as I can remember (I'm using 0.9.9 presently).

The DJ
Cone Master
Cone Master
Posts: 5987
Joined: 22 Nov 2003 21:52
VLC version: git
Operating System: Mac OS X
Location: Enschede, Holland
Contact:

Re: Garbage & crash with odd video sizes

Postby The DJ » 19 Jun 2009 20:20

Do you have samples that exhibit this problem ?
Don't use PMs for support questions.

worstusernameever
New Cone
New Cone
Posts: 8
Joined: 19 Jun 2009 16:55

Re: Garbage & crash with odd video sizes

Postby worstusernameever » 20 Jun 2009 10:55

I've lots of samples. I found the instructions on the wiki to upload a sample to your FTP server but when I tried to put it in incoming it disappeared. If it's in there somewhere, the filename is HIGNFY S25E02 - Part 1.flv.

Jean-Baptiste Kempf
Site Administrator
Site Administrator
Posts: 37523
Joined: 22 Jul 2005 15:29
VLC version: 4.0.0-git
Operating System: Linux, Windows, Mac
Location: Cone, France
Contact:

Re: Garbage & crash with odd video sizes

Postby Jean-Baptiste Kempf » 20 Jun 2009 21:24

I don't see it. Can you put it anywhere?
Jean-Baptiste Kempf
http://www.jbkempf.com/ - http://www.jbkempf.com/blog/category/Videolan
VLC media player developer, VideoLAN President and Sites administrator
If you want an answer to your question, just be specific and precise. Don't use Private Messages.

worstusernameever
New Cone
New Cone
Posts: 8
Joined: 19 Jun 2009 16:55

Re: Garbage & crash with odd video sizes

Postby worstusernameever » 21 Jun 2009 14:44


The DJ
Cone Master
Cone Master
Posts: 5987
Joined: 22 Nov 2003 21:52
VLC version: git
Operating System: Mac OS X
Location: Enschede, Holland
Contact:

Re: Garbage & crash with odd video sizes

Postby The DJ » 22 Jun 2009 14:50

I think this is a bug in ffmpeg's avcodec. At least, I don't see a way to detect this problem. Perhaps fenrir has an idea.
Don't use PMs for support questions.


Return to “General VLC media player Troubleshooting”

Who is online

Users browsing this forum: No registered users and 18 guests