The VideoLAN Forums

When I try playing some webm videos the screen splits into four stripes and flickers. It happens only for some webm files. They play fine in kmplayer or chrome browser. This is what it looks like:

Please open Tools -> Messages (set Verbosity to 2) before you start the playback, and then paste the full resulting log here or on Pastebin.com if it's too long.

Also please upload a short sample of a problematic file to Zippyshare.com (200 MB max) and then post the link to the file here.

If needed cut it with DGsplit and read here about how to do it:
viewtopic.php?f=14&t=57724&p=193335#p193335
100 MB max should be enough.

Is it VP9 ?

Is it VP9 ?

yes it is VP9.. it hasn't been fixed even until now.. I was wondering if there's an update on this matter?

Not really, can you upload it as Lotesdelere asked, so we can reproduce here ?

I'm having the same problem as described in the first post on an HP laptop with Radeon video card. Many/most webm videos are distorted in VLC while they play without problem in KMPlayer or in Chrome. (I do have another Dell laptop that doesn't have this problem, the webm videos that are distorted on the HP, play fine in VLC on the Dell.)

Here is the pastebin link for a 64mb video that causes the problem: https://www32.zippyshare.com/v/DVPxAlaf/file.html

Then the log file from VLC: https://pastebin.com/KYi599hR

Hope this helps track down the problem, let me know if further steps would be helpful!
Mike

I tried the latest version, 3.0.7.1 and am still seeing the distortion like mentioned in the first post. For some videos, it looks exactly like what is shown in the first post, for others, there are only 2 "bands" instead of 4, others have the 4 bands but not exactly like in the first post. Some webm videos are fine, some kind of slip in & out of the distortion to be clearly displayed for a short while.

The 22mb .zip file linked below has a .webm file causing the issue, the debug log, and a very short video of the output captured with a camera:
http://mikemakesitwork.com/Sample.zip

Perhaps the laptop having this problem is a piece of junk but the video included in the .zip file does play fine in KM Player or Chrome.

Thanks to the dev(s) for looking at this problem, no hard feelings if it isn't fixable!

Cheers. I have exactly the same garbled WebM picture issue as described above, feel nothing more to describe myself.

My PC is currently running x64 VLC player 3.0.9 (installed on drive C: via exe installer) under genuine Windows 7 Pro SP2 x64 ( it is a x64 AMD machine @ 3500 MHz @ 8000 MB @ ATi Radeon).

The problem appears during a usual playback of a *.webm movie retrieved from a 4K youtube [url]https://www.youtube.com/watch?v=UOxkGD8qRB4[/url] video with a fresh version of youtube-dl utility (not a converter but a ffmpeg-based muxer, indeed).

In general, all VLC settings are kept default - I tried earlier to play the file with different Direct3D overlay settings and even with disabled GPU acceleration at all, but nothing helped.

The debug output starts with the following: [url]https://pastebin.com/qeLEpgga[/url]

There are no other VLC, Windows or hardware malfunctions happening during the test :) The native WEBM movie sound is quite OK, and the GUI feels well, the CPU load is at approx. 100 % and VLC application weights a bit less than 200 MB in the RAM according to the Task Manager.

BTW, it is possible to display the same WebM file on the same system via ffplay - though ffplay drops the audio track, it therefore renders the video with 50..90 % CPU load, so the system in general is technically capable of playing such videos :)

I have the same issue on LINUX/UBUNTU 18.04 as described by Doctor ex Machina and identity64.