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Horrordee
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PostPosted: Thu, 15th Oct 2009 13:21    Post subject:
FFDshow red icon definately comes up when I play it, however my decoder for H.264/AVC is libavcodec - i am not using "ffmpeg-mt" and I do not have that option either.

:/

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Horrordee
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Posts: 8866
Location: England
PostPosted: Thu, 15th Oct 2009 14:13    Post subject:
Hmm this is so bloody weird.

Here are the results of my testing (inc. NFOs incase they may help diagnose my problem):

hd1080-defiance.sample.mkv - in MP audio completely out of sync with video from begining (fine with DXVA in MPC HC)
 Spoiler:
 


besthd-homecoming-1080p-sample.mkv - in MP audio completely out of sync with video from begining (fine with DXVA in MPC HC)
 Spoiler:
 


Star.Trek.2009.BluRay.1080p.x264.DTS-WiKi.Sample.mkv - plays fine and audio seems in sync in MP and using DXVA
 Spoiler:
 



I cannot for the life of me work out why one would work, and the other two don't. Is there more I can do on my PC to test out why this may be? Some logs or something?

[EDIT] I noticed the Star Trek has a lower resolution @ just X x 800. The others all seem much higher (i assume because they are encoding the black bars?)... could it just be running better because of the lower res? [/EDIT]

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Horrordee
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Location: England
PostPosted: Thu, 15th Oct 2009 14:41    Post subject:
I think what I need to do is play all 1080p videos in MPC-HC.

It's a pain. I use Vista Media Centre, and with the Media Browser plugin it's seamless - however, because FFDshow is used to play MKV, and my CPU isn't powerful enough for 1080p MKV, i am limited to 720p video within Windows Media Centre.

If only there was a app which looked at the size of the video, if 720p or <, use FFDshow, if 1080p - use DXVA - that would be great.

But being as i've read they're never going to integrate DXVA into FFDshow, then I see no easy solution.

BAH!

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Horrordee
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Location: England
PostPosted: Thu, 15th Oct 2009 14:50    Post subject:
Hmm, the story gets more interesting:

http://thegreenbutton.com/forums/p/76821/385576.aspx

According to that thread, Windows 7 build in codecs will play MKVs in DXVA mode. That means, if I replace Vista with Win7, and then use Win7 Media Centre it _should_ play 1080p in DXVA out of the box...

... i'm thinking about dual booting Win7 to see if this is the case... unless anyone here thinks I am wrong and it will be a waste of time?

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me7




Posts: 3939
PostPosted: Thu, 15th Oct 2009 15:23    Post subject:
You confuse mkv with h.264:
MKV is no format but a container, like avi, or mp4. The format used by these rips is h.264. The h.264 video is stored in a mkv container alongside the audio. The container has no impact on performance.

Win7 does indeed have a native h.264 dcoder that supports hardware acceleration, but you still need an external splitter to read mkv containers.
You can try the Win7 codec, it might work better for 1080p then ffdshow on your system, but keep in mind that DXVA is flawed and breaks easily. It is possible that the videos you mentioned are bad encodes or surpass DXVA's decoding capeabilities.

But before you do that make sure you really tried a recent ffdshow veresion (the absence of "ffmpeg-mt" makes me suspicious).
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Horrordee
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Posts: 8866
Location: England
PostPosted: Thu, 15th Oct 2009 15:37    Post subject:
me7 wrote:
You confuse mkv with h.264:
MKV is no format but a container, like avi, or mp4. The format used by these rips is h.264. The h.264 video is stored in a mkv container alongside the audio. The container has no impact on performance.

Win7 does indeed have a native h.264 dcoder that supports hardware acceleration, but you still need an external splitter to read mkv containers.
You can try the Win7 codec, it might work better for 1080p then ffdshow on your system, but keep in mind that DXVA is flawed and breaks easily. It is possible that the videos you mentioned are bad encodes or surpass DXVA's decoding capeabilities.

But before you do that make sure you really tried a recent ffdshow veresion (the absence of "ffmpeg-mt" makes me suspicious).


omg, i could kiss you.

i installed the latest version of ffdshow, and low and fucking behold, ffmpeg-mt appears in the drop down list. I select it, and BOOM. Everything runs fine... fast and dandy.

WTF! Simples! THANKS! (to iNatan too!)

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