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Old 28th July 2010, 11:54   #12181  |  Link
rpm7200
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libavcodec can't decode dts from dts ma. why not?
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Old 28th July 2010, 14:02   #12182  |  Link
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Quote:
Originally Posted by tetsuo55 View Post
Ati Catalyst 10.7 lists support for VLC DXVA in the changelog.

Technically ATI improved the performance of the dxva2 memory->memory copy operation. This change should be very visable in ffdshow and open up posibilities for more post-processing.
Great news
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Old 28th July 2010, 15:17   #12183  |  Link
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I have a problem with auto profile loading. I can get them to load for DVD upscaling using the dimensions 720 x 480 and 720 x 576 on some files but a couple of divx .avi files it ignores them. These have a different resolution of 656x256 and 672x400 respectively. I have lots of other files with different resolutions that are still classed as standard definition.

How do I get ffdshow to auto load profiles for these odd resolutions that do not match the usual 720x criteria? Or is this some bug with divx in .avi and it should be working?
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Old 28th July 2010, 21:05   #12184  |  Link
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Quote:
Originally Posted by tetsuo55 View Post
Ati Catalyst 10.7 lists support for VLC DXVA in the changelog.

Technically ATI improved the performance of the dxva2 memory->memory copy operation. This change should be very visable in ffdshow and open up posibilities for more post-processing.
It seems some changes were needed in VLC too :
http://git.videolan.org/?p=vlc.git;a...3233b2b26ca20a

I assume it's not done in ffdshow.

Is there a way to enable postprocessing ? I see only "surface overlay" as preprocessing, which is quite limited.

I suppose the DXVA decoder will only connect to a DXVA compliant renderer. Can we get the decoded video, for example to use in Avisynth ? I think we would need a second output pin.
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Old 29th July 2010, 08:07   #12185  |  Link
nevcairiel
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You can't do full post-processing with a DXVA decoder. Technical limitations. Once its in the GPU, you can't get it out again :d
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Old 29th July 2010, 17:56   #12186  |  Link
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Quote:
Originally Posted by nevcairiel View Post
Assuming you mean bitstreaming..
It at least works on the desktop H55 boards with an i3 or i5 CPU, so i would hope it also works on Laptops. It might cause problems if your laptop has a hybrid GPU (like, coupled with an nvidia or ATI for better performance)
thank you for the answer. Helps me make sure that when i get a laptop i get the right combo for what i'm trying to do.
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Old 29th July 2010, 18:09   #12187  |  Link
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Any help on getting profiles to load based on resolution = >720P?
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Old 29th July 2010, 18:21   #12188  |  Link
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oddball
As for me, it doesn't very clear what is your problem... set 720 height in left box and in right leave 2048
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Old 29th July 2010, 18:41   #12189  |  Link
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Originally Posted by Keiyakusha View Post
oddball
As for me, it doesn't very clear what is your problem... set 720 height in left box and in right leave 2048
Tried that. The profile does not auto load for the 672x400 video.
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Old 29th July 2010, 18:50   #12190  |  Link
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Originally Posted by oddball View Post
Tried that. The profile does not auto load for the 672x400 video.
Of course. It shouldn't. What you requested is for 1280x720 and higher. Then set 1px in left box and 720 in right. EDIT: also you probably can set width to 1 left and 1280 right and switch mode to "and"

Last edited by Keiyakusha; 29th July 2010 at 18:53.
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Old 30th July 2010, 12:39   #12191  |  Link
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Hi.
Is there a plan to add DVB Subtitles support (decoding) in to FFDshow?
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Last edited by hoborg; 30th July 2010 at 12:41.
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Old 30th July 2010, 19:21   #12192  |  Link
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any suggestions on what settings to use in ffdshow in order to get the below black and whiter than white information passed to my projector and then calibrate accordingly with a calibration disc to video levels?
I've tried many many combinations of settings in ffdshow(levels,input/output variations in rgb conversion tab with no luck..)...
Whenever i used ffdshow,either as a decoder or for post processing, i never managed to do it...Also,i realized that when ffdshow is active ,CCC settings(br./contrast) and rendering settings output in mpc-hc don't have any effect on the video playing...

I'm using ati 5670 with 10.7,mpc-hc rev.2099 with evr custom,ati pixel output format :full rgb,enable dynamic contrast in CCC disabled and HQ YV12->rgb conversion selected and rgb 32 selected output in ffdshow..
Thanks!
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Old 1st August 2010, 13:50   #12193  |  Link
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Hi there, here is another question:

I just noticed ffmpeg has a -sameq switch, which according to their documentation, provides same video quality as source (their words not mine).

How is this possible on lossy formats like mpeg 2 and mpeg 4 asp? Does this mean I can get lossless conversion to mpeg 4 asp just by using the -sameq switch on ffmpeg?

If lossless is not the case, then what exactly "-sameq" means?

PS: I am asking here because you guys have the tryouts project, so you may know ffmpeg.
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Old 1st August 2010, 22:37   #12194  |  Link
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It copies qps from the source to the destination. I don't remember how well it works.
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Old 1st August 2010, 22:50   #12195  |  Link
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what happend to ff_acm.acm? is it usable with virtualdub?
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Old 2nd August 2010, 07:53   #12196  |  Link
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Hi.
Just noticed that HD MPEG-2 decoding is preaty slow comparing to Gabest/PDVD MPEG-2 decoders.

For example this 1080i MPEG-2sample is unplayable here on Intel Atom CPU using FFDShow (all postprocessing is turned off). Nearly 3/4 frames are droped.
If i play this sample using Gabest/PDVD10 decoder, it will play perfectly, no droped frames.

Using "MPC - Mpeg Source (Gabest)" as a splitter.

EDIT:
I am comparing software decoding only, DXVA is in PDVD is turned off.

This only happend if "set interlace flag in output media type" is on in FFDShow. Source is interlaced and i want to GPU do deinterlacing So maybe this is GPU problem? I have only crapy "Intel(R) 82945G" GPU here...

Here is graph: (droped frames)
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Last edited by hoborg; 2nd August 2010 at 13:20.
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Old 2nd August 2010, 09:10   #12197  |  Link
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Quote:
Originally Posted by XhmikosR View Post
Weird, I always got a crash with some specific files with AC3 audio and only with the ICL11 ffdshow builds; generic builds are fine for me. With the debug ffdshow builds I get no crash. I still haven't found the cause.
Same here but with the x64 version in WMC (x64) which made me to stop using FFD
It will be nice if someone can fix this (AC3Filter x64 it's working fine)
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Old 2nd August 2010, 09:32   #12198  |  Link
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Quote:
Originally Posted by hoborg View Post
Hi.
Just noticed that HD MPEG-2 decoding is preaty slow comparing to Gabest/PDVD MPEG-2 decoders.

For example this 1080i MPEG-2sample is unplayable here on Intel Atom CPU using FFDShow (all postprocessing is turned off). Nearly 1/2 frames are droped.
If i play this sample using Gabest/PDVD10 decoder, it will play perfectly, no droped frames...

Using "MPC - Mpeg Source (Gabest)" as a splitter.
Do you compare here dxva with cpu decoding? Because ffdshow might be pretty fast.
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Old 2nd August 2010, 09:34   #12199  |  Link
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Do you compare here dxva with cpu decoding? Because ffdshow might be pretty fast.
No, only software decoding of course (DXVA in PDVD is off).
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Old 3rd August 2010, 10:19   #12200  |  Link
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Are you using libmpeg2 or libavcodec in ffdshow?
Whichever you are using, try the other one.
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