ffdshow tryouts project: Discussion & Development

[Thunderbolt8]

Originally Posted by nm

Upload a sample clip to MediaFire so we can take a look at it.

heres a sample: http://www.sendspace.com/file/u83a49

[albain]

Originally Posted by clsid

I assume that this also useful for the 'old' code in the current SVN trunk? If so, you could already commit that part.

I am currently making a cleaner code and removing the non working part.

Then I will commit it

[nm]

Originally Posted by Thunderbolt8

hm how can I do that, using hardware deinterlacing with ffdshow?

Go to "Output" page in ffdshow video decoder configuration,
Select "Set interlace flag in output media type" and Method: "Bob"
Select NV12 colorspace and unselect all other colorspaces.

Remove all filters (deinterlacers, resizing, ...) that you were using.
If hardware deinterlacing and denoising doesn't work after these settings, try different renderers.

heres a sample: http://www.sendspace.com/file/u83a49

Yes, the problem of jumping texture/noise patterns is in the video and the only way to reduce it during realtime playback seems to be heavy denoising that destroys fine details. Not all videos need such filtering, so I'd rather re-encode this problematic movie with some AviSynth filtering or set up a playback filtering chain separate from the one that I normally use.

[Thunderbolt8]

hardware deinterlacing works now that way, thanks. playback is quite a bit faster now and also had noise problem got somewhat better due to that. not as good as with powerdvd, but still better than all those software renderers.
only remaining problem seems to be that when I activate sharpening and the camera moves then the sharpened layer also seems to jump as well :S

btw. is it still possible to use (.ass) subs with hardware deinterlacing?

[clsid]

If you use the internal subtitle renderer of MPC then it should work.

[Thunderbolt8]

whats actually the purpose of directvobsub/vsfilter then if the internal filter already should work?

[tetsuo55]

Originally Posted by Thunderbolt8

whats actually the purpose of directvobsub/vsfilter then if the internal filter already should work?

All filters are available for "other" directshow video players like windows media player.

Vsfilter is also interesting for mpc-hc use, some bugs that are in the internal splitter are not in vsfilter and vice versa (this has to do with the way the subs are drawn to the screen)

[nm]

Originally Posted by Thunderbolt8

only remaining problem seems to be that when I activate sharpening and the camera moves then the sharpened layer also seems to jump as well :S

What sharpening? If you sharpen with ffdshow before hardware deinterlacing, serious artifacting is certainly expected.

[Thunderbolt8]

I sharpen with ffdshow, yes (needed for downscaling in order not to have a too blury picture). but how 'before hardware deinterlacing', can I influence the order which of these comes first?

[DarkZell666]

Originally Posted by Thunderbolt8

I sharpen with ffdshow, yes (needed for downscaling in order not to have a too blury picture). but how 'before hardware deinterlacing', can I influence the order which of these comes first?

Hardware de-interlacing comes last no matter what, so ... you can't =) Either use a sharpener that supports interlaced input, or separate fields + sharpen + weave.

[nm]

Originally Posted by Thunderbolt8

I sharpen with ffdshow, yes (needed for downscaling in order not to have a too blury picture). but how 'before hardware deinterlacing', can I influence the order which of these comes first?

You can't. AFAIK, hardware deinterlacing (and other hardware postprocessing) is done at the rendering stage, so ffdshow can't get the frames back for further processing.

[leeperry]

Originally Posted by Thunderbolt8

sharpen with ffdshow [..] hardware deinterlacing

you only option is the PS sharpening scripts in MPC/KMP I think..try the default one at 0.65, it looks good, not as good as LSF though.

or through your graphic card drivers maybe?

[Thunderbolt8]

hm I have a radeon 4770, at least I haven't seen such an option in catalyst control center

[nm]

Originally Posted by Thunderbolt8

hm I have a radeon 4770, at least I haven't seen such an option in catalyst control center

Looks like edge enhancement and denoising should be adjustable (or at least used to be): http://www.avsforum.com/avs-vb/showthread.php?t=1060000

[Thunderbolt8]

wtf, denoising of 64 is the default setting 0o

in order to be as close to be to the original intended presentation as possible, I guess such options as denoising & edge enhancement & dynamic constrast have to be disabled then?

[nm]

Originally Posted by Thunderbolt8

in order to be as close to be to the original intended presentation as possible, I guess such options as denoising & edge enhancement & dynamic constrast have to be disabled then?

Yes, if the video is intended to look the way it does. Your sample most likely isn't.

One of the reasons for denoising by default is that review sites test the video playback quality of graphics cards and other devices by playing benchmark videos such as HD HQV. The tested device gets better benchmark scores if it denoises noisy scenes properly.

[leeperry]

hehe, you opened Pandora's box...graphic drivers doing funky stuff on VMR/EVR(especially ATi). there's a good reason why some ppl prefer HR/mVR

[ikarad]

What means "Added new audio structure for windows 7" in rev 3056?

"Revision 3056 - Directory Listing
Modified Mon Aug 17 12:37:38 2009 UTC (30 hours, 59 minutes ago) by albain

Added new audio structure for windows 7
Added a verification of supported output sample format when the codec changes"

[clsid]

It means better S/PDIF support.

[Mercury_22]

Some interesting news Dolby Digital Plus Chosen as an Audio Format for Windows 7 !
Maybe we will need the full 7.1 channels DD+ working in the end, cause this may rise back the almost dead DD+ format ?!