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9th January 2012, 23:47 | #7983 | Link |
4:2:0 hater
Join Date: Apr 2008
Posts: 1,302
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That VC-1 file works with this revision
However I had to disable the VS option "Treat compiler warnings as errors" because there are warnings that weren't there before. |
10th January 2012, 07:55 | #7987 | Link |
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Join Date: Jun 2010
Posts: 15
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Running Lav splitter, audio and video and MPD-HC. I just tried the new .44 version and when I enable hardware decoding with QuickSync I get nothing but stuttering. Doesn't matter if I use EVR CP or MADVR. I have an i3.
Any ideas? Could it be the version of MPC-HC? |
10th January 2012, 15:59 | #7989 | Link |
QuickSync Decoder author
Join Date: Apr 2011
Location: Atlit, Israel
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Yes, forgot to turn off static analysis on the standalone project. Fixed with rev21.
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Eric Gur, Processor Application Engineer for Overclocking and CPU technologies Intel QuickSync Decoder author Intel Corp. |
10th January 2012, 18:00 | #7990 | Link |
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Join Date: Dec 2005
Posts: 244
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yes my cpu can handle xvid playback fine, i just thought i would test it to see if it works. i though the lavcuvid had mpeg4-asp hardware decode working.
could be my graphics driver, im using 275.33. may need to update not sure. |
10th January 2012, 18:04 | #7991 | Link |
4:2:0 hater
Join Date: Apr 2008
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When the input is 4:2:2 (any bitdepth) and all 4:2:2 formats are unticked in the settings, LAV Video prefers downsampling to 4:2:0 instead of upsampling to 4:4:4 or RGB. I see the logic in this, but wouldn't it be better not to destroy any color information?
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10th January 2012, 19:29 | #7992 | Link |
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I suppose that can be argued, i don't care either way, easy enough change to prefer RGB.
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LAV Filters - open source ffmpeg based media splitter and decoders |
10th January 2012, 21:18 | #7994 | Link |
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I'd suggest to use YCbCr 4:4:4 then, if checked and supported by the renderer. Otherwise I'm not sure if I would vote for RGB. RGB has the problem that most video renderers passthrough RGB untouched, ignoring their own "levels" option. So for most video renderers LAV Video Decoder would have to be configured to use either video or PC levels RGB output, depending on whether the display/TV/projector needs PC or video levels. I don't find it intuitive that the user has to setup a video decoder filter to satisfy a monitor's specific needs, especially not with native YCbCr content. So I think RGB output should only be chosen if the content is native RGB, or if no YCbCr connection is available at all. Just my 2 cents, of course. In the end it's not really important to me.
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10th January 2012, 21:33 | #7995 | Link |
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Nothing really supports 4:4:4 (AYUV), EVR claims to accept it, but on most hardware its using software emulation which is incredibly slow, which is why i'm reluctant to prefer it. In the end, if you turn off 4:2:2, its your own damn fault.
Sadly, i cannot make this dependent on the renderer, because i need to expose the media type before the renderer connects, and at least EVR is too stupid to allow me to switch pixel format after connection.
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LAV Filters - open source ffmpeg based media splitter and decoders Last edited by nevcairiel; 10th January 2012 at 21:39. |
10th January 2012, 21:40 | #7997 | Link |
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4:4:4 will always use RGB over downsampling chroma, fwiw.
The whole list of which format is preferred for what decoding format, see the table here: http://git.1f0.de/gitweb?p=lavfsplit...3d;hb=HEAD#l58
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LAV Filters - open source ffmpeg based media splitter and decoders |
10th January 2012, 21:49 | #7999 | Link | |
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Quote:
Edit: Btw, did you ever check whether the RGB level autodetection works in the newer madVR builds? I believe it should be pretty much perfect now. I dare you to make it fail (without resorting to clearly broken setups like configuring ffdshow to output PC levels while letting an avisynth script convert to video levels at the same time). Last edited by madshi; 10th January 2012 at 21:52. |
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10th January 2012, 22:32 | #8000 | Link | ||
4:2:0 hater
Join Date: Apr 2008
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Quote:
Yes, but you said "if no YCbCr connection is available at all". Hence the question. The situation is the same thou. You'd be destroying information. And when you use one of these formats, it's because you have information to keep. Quote:
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