V-MPEG4 video rendering broken

Lately I can't play *.mkv certain files with V-MPEG4 codec correctly.

The screen is kind of split into an overlay of three images, each covering approximately 1/3 of the screen.

I've already tried:
• Running the fix within the codec tweak tool
• Uninstalling K-Lite completely and reinstalling it
• Switching splitters for files of type *.mkv / *.mp(e)g / *.mp4

To no avail, the video remains 'shredded'.

I noticed this two weaks ago or so. Beforehand I didn't have any problems with that kind of video. Thus it probably is a change introduced with one of the latest versions.

Other videos with nearly the same codec funny enough still can be played within MPC-HC.

All videos play fine within VLC media player.

I've attached screenshots of 'Video shredded', 'Video Okay' and 'MPC-HC' (for shredded video) to show details.

Anyone any idea??!?

I have downloaded the first part of that file that looks shredded for you. It plays fine here.

The problem is probably related to the fact that the video has a height (494) that is not nicely dividable by 4.

MPC menu > Play > Filters > Copy filters list
Copy the list here, so I can see if anything is wrong.

Here we go —

Filters currently loaded:
- Default DirectSound Device
- Enhanced Video Renderer (custom presenter)
- Audio Switcher
- ffdshow Video Decoder
- ffdshow Audio Decoder
- LAV Video Decoder (internal)
- LAV Audio Decoder
- LAV Splitter Source

Open the settings of ffdshow video decoder. At the bottom of the "Codecs" page set 'raw video" to disabled.

If you actually require ffdshow for certain functionality, then alternatively you can try enabling its Resize filter and set it to expand the size to a multiple of 16. Also move the filter above any other processing filter that you are using in ffdshow.

Which settings are you using in ffdshow? Then I can try to reproduce and maybe help even better.

Hi, thanks for your fast reply.

I've disabled ffdshow completely now, the non mod 4 height videos unfortunately still are shredded.

New filter list:
Filters currently loaded:
- Default DirectSound Device
- Enhanced Video Renderer (custom presenter)
- Audio Switcher
- LAV Video Decoder (internal)
- LAV Audio Decoder
- LAV Splitter Source

I havn't found any settings in the LAV video decoder affecting this weird behaviour.

Which graphics card do you have? You may need to update the driver.

If you don't know:
Codec Tweak Tool > Generate Log
That contains details about your hardware.

Screen size:  3840x2160 (32bits) (30Hz)
Video card:   AMD Radeon R9 200 Series
             VendorID: 1002, DeviceID: 67b1
Video mem:    4096 MB
Video driver: aticfx64.dll - Catalyst 15.8

Currently I've installed Catalyst 16.6.2 WHQL. Just downloading 16.7.2.

In case you are using hardware acceleration, try disabling that.

Switching off Hardware acceleration has no effect, too ...

MPC-HC options > External filters > Add "ffdshow raw video filter" and set it as preferred
Double-click on it to access its settings. Enable "resize & aspect" and set it to expand to multiple of 16.

Does that fix the problem? Then we at least know the size it the cause.

Yes, perfect image with two tested files with non mod 4 height. Looks like LAV could stand such a tweak, too.

It does not have such tweaks (nor will it get it) because this is not a normal situation. The driver should normally be able to handle all sizes.

Another tweak that you could try is to disable YV12/NV12 in LAV Video Decoder.

Disabling YV12/NV12 in LAV works, even with hardware acc. enabled. Thanks!

Great!

Could you test it again in the future after updating drivers? I would like to know if AMD has fixed it on not. Always useful to know in case others show up with similar problems.

Okay, but that will have to wait a month or so. The problem was still present with AMD driver 16.7.2.

To give a short update: Problem's still present with AMD 17.7.2. Above fix works.