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Old 24th December 2013, 22:07   #1  |  Link
Frankenscript
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MPC-HC Green Screen with The Hobbit (1) Bluray MKV Rip

Hi folks,

I'm seeing something odd and wondering how to troubleshoot.

I just ripped the bluray of The Hobbit (vol 1: The Unexpected Journey) to MKV with MakeMKV. It completed with no problems.

However, MPC-HC on my desktop gives a green screen when I try to play the file. Sound plays, just green video. I see the same problem whether I use the x64 or x86 version of MPC-HC 1.71, using either EVR-CP, Sync, or MadVR renderers. I've tried reinstalling using reset settings and still see the green screen.

On this computer, VLC (2.1.2) plays the same file just fine, as does Windows Media Center via MediaBrowser 3 Classic (LAV instead of windows media foundation) or TMT5. So, there's nothing wrong with the file.

The odd thing is that my HTPC downstairs seems to play the file fine in MPC-HC (x64, using Sync renderer). Both computers are Win7x64 SP1, both AMD processors with ATI graphics cards (HTPC: 5670, Desktop: 4550).

I can't explain why MPC-HC won't play the file on my desktop PC...

Is there any troubleshooting I can do to explore it? I've never had this problem before.

Thanks!

Last edited by Frankenscript; 24th December 2013 at 22:48.
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Old 25th December 2013, 00:31   #2  |  Link
Frankenscript
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I poked around some more... the file plays fine on my desktop in MPC-HC if I use either the EVR (not EVR-CP) or Video Mixing Renderer (9). Go figure...

Any ideas what might be happening here? Info from MediaInfoGUI:


ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : V_MPEG4/ISO/AVC
Duration : 2h 49mn
Bit rate mode : Variable
Bit rate : 20.4 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 23.976 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.411
Stream size : 24.2 GiB (91%)
Language : English
Default : No
Forced : No
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Old 25th December 2013, 01:37   #3  |  Link
vood007
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Go to LAV Video Filter settings and disable either YV12 or NV12 and try. Looks like a GFX driver bug to me.
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Old 25th December 2013, 01:47   #4  |  Link
Frankenscript
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Quote:
Originally Posted by vood007 View Post
Go to LAV Video Filter settings and disable either YV12 or NV12 and try. Looks like a GFX driver bug to me.
Thanks for the suggestion. I went in, unchecked BOTH of them, applied, restarted MPC-HC, checked that they remained unchecked, and ran the file again. Still green screen.

Agree, the big difference between the two systems is that I'm using the ATI 4xxx card with the "Legacy" driver ATI puts out for it, versus an up to date AT 5xxx card in the HTPC. Probably that's it. Just weird, is all, since I've never seen this ever before on any video file, and nothing looks odd about this MKV rip.

<puzzled!>
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Old 25th December 2013, 02:21   #5  |  Link
wanezhiling
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Try to use LAV sw decoder (set hardware decoder to "None")
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Old 25th December 2013, 15:36   #6  |  Link
Frankenscript
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Ahah! That did it... setting hardware decoder to None allowed the file to play in EVR-CP.

It's odd, because this is the first file I've ever had this trouble with, and it's unclear to me why THIS file (AVC, nothing special as far as I can tell) barfs when hundreds of others played without incident.

But, clearly I'll need to upgrade my video card if this kind of thing starts happening more often. At least it plays fine on my HTPC with the 5670 card.

Thanks for the help.

Marc
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