ffdshow tryouts project: Discussion & Development

[THX-UltraII]

Originally Posted by THX-UltraII

The ATI HD5670 was released a few days ago and is already in stock here in the Netherlands. Will this card give any problems with Bitstream support?

any thoughts?

[Cheesegeezer]

Do you mean in terms of MPC and FFDShow or via PDVD 9 Ultra.

Anyway that doesn't really matter as I can't see any reason why it would cause any problems, it uses the same audio chip across the whole HD5xxx series right upto the HD5970.

[Jeremy Duncan]

the ffmpegmt won't compile in the 3027 trunk build. I worked once then I couldn't get it to compile again.

[XhmikosR]

It compiles just fine.

[tal.aloni]

Originally Posted by THX-UltraII

any thoughts?

I'm pretty confident it would support bitstream.

[alexins]

Originally Posted by XhmikosR

It compiles just fine.

I confirm!

[THX-UltraII]

Just picked up a 5670 and wondering what I need to make bitstreaming dd, dts, dts-ma and true-hd:

- 9.12, 9.12 hotfix or 10.1 beta?
- Realtek driver or not?
- mpc-hc: select 'MPC audio renderer as output'?
- latest ffdshow with all bitstream boxes checked? Anything else in ffdshow that needs to be selected or changed?

I use W7

[Andy o]

Most of us are using 9.12 hotfix w/Realtek 2.39 HDMI driver. The ATI-provided driver has the silent stream issue, and also the Realtek driver works with 32-bit output with ReClock and WASAPI exclusive, the ATI driver only does 16-bit. I don't see any upside to the ATI driver.

The Default DirectSound renderer works fine, or the ATI HDMI output also works. MPC audio renderer does exclusive mode, and last I tried (MPC-HC 1489 I believe) you had to disable audio switcher, which then doesn't let you switch audio tracks. Everything else works at default too, but just in case make sure you have mpeg PS/TS/PVA in the internal filters checked. Ffdshow needs you to select the bitstream boxes, I don't think anything else has to be done.

BTW the audio discussion specific to this was branched off to here.

[clsid]

Originally Posted by Mr VacBob

If you mean frame, I'll fix it tomorrow - slice threading was broken but fixed again in ffmpeg. Splitting the decoder files completely confused git, so I'll have to do a quite large merge by hand. Meant to do it over the weekend but people kept asking me to do other stuff…

I didn't mean ffmpeg-mt. I was waiting for you to update your git tree before I merge that into ffdshow trunk.
We use an old mt patch for slices in our normal libavcodec. That got broken due to the updates. At first it crashed, after the fix by Michael you mentioned, it no longer crashes, but there still are some decoding problems.

[mark0077]

To follow up on yadif not doubling frame rate. None of the ffdshow de-interlacers that can double frame rate now do. The frame rate doesn't change even though visually it does look de-interlaced, its just the same frame rate.

[dann23]

is it possible to add mpeg2 to dxva decoding? I have some movies in mpeg2 (in mkv container) and bitrate of 17000 kbps.

[rsd78]

Originally Posted by albain

7%

But this is normal as there is no one-way and return to the GPU.

Also there are in overlay mode colorspaces conversions

Thanks again Albain. Will the current implementation of Overlay work automatically with Media Control? Or do you need to modify something (either ffdshow or Media Control)?

Any chance someone will provide some benchmarks in comparison to existing solutions (i.e. software decoding, dxva, CUDA) for various files/systems? I'm just curious as to the results. I'm a little surprised the DXVA with Overlay used 3x as much CPU as regular DXVA but it's hard to judge without that overall context and baseline measurements.

[Gleb Egorych]

Originally Posted by Gleb Egorych

Just for info: new ForceWare 195.55 broke NV12 support for some files. Output using NV12 is wrong with different codecs including ffdshow.

Fixed in 196.21 WHQL.

[JarrettH]

Originally Posted by dann23

is it possible to add mpeg2 to dxva decoding? I have some movies in mpeg2 (in mkv container) and bitrate of 17000 kbps.

exactly what i was asking before too!

mpc-hc should be just as nice for playing back dvds. the internal deinterlacer is not very good

[cca]

Revision 3207 introduced a bug on the DVD navigation, menu options no longer highlight on mouse over. Revision 3204 works fine.

[Nyquist]

Originally Posted by JarrettH

exactly what i was asking before too!

mpc-hc should be just as nice for playing back dvds. the internal deinterlacer is not very good

Set the output to NV12 and interlaced to auto and let libavcodec or libmpeg2 doing the decoding.

[tal.aloni]

Beta 2 improves overlay mode visibility, and also adds Blend mode,
I'm not really sure if blend mode is very useful, because those read operations are very resource-hungry.
[full-processing-mode seems less and less practical, it's not fully implemented in this beta (and the previous one)]

build
http://iknowu.net/files/public/ffdsh...sing-Beta2.exe

patches
http://iknowu.net/files/public/ffdsh...ng-Beta2.patch

http://iknowu.net/files/public/ffdsh...edSample.patch

Regards,
Tal

[albain]

Originally Posted by rsd78

Thanks again Albain. Will the current implementation of Overlay work automatically with Media Control? Or do you need to modify something (either ffdshow or Media Control)?

Any chance someone will provide some benchmarks in comparison to existing solutions (i.e. software decoding, dxva, CUDA) for various files/systems? I'm just curious as to the results. I'm a little surprised the DXVA with Overlay used 3x as much CPU as regular DXVA but it's hard to judge without that overall context and baseline measurements.

It should work but you have to replicate the same settings in FFDShow DXVA configuration (in the remote & keyboard settings).

For now we are stuck on a serious problem : the copy from the GPU to system memory take too much time (80ms for one 720p frame), more time than it should according to intel's article.
Multithreading the copy did worse (120ms)

Even if we do the copies in parallel, the copy time will most likely exceed the playback time. Anyway I will give it a shot.
So for now full postprocessing with DXVA decoding consumes more than full software decoding and processing.

As Tal pointed out, there is something that we should have missed

I don't understand why it would take so much time

[mark0077]

Originally Posted by mark0077

To follow up on yadif not doubling frame rate. None of the ffdshow de-interlacers that can double frame rate now do. The frame rate doesn't change even though visually it does look de-interlaced, its just the same frame rate.

I have narrowed down the problem being introduced between build 3205 and 3207, as 3204 and before performs double frame rate de-interlacing perfectly.

Does anyone know somewhere I can get build 3205 and 3206, and how to contact either tal_aloni or drevil_xxl, as they are the people who made changes in these builds.

Revision 3207 - Directory Listing
Modified Mon Jan 18 14:41:19 2010 UTC (33 hours ago) by drevil_xxl
minor fix

Revision 3206 - Directory Listing
Modified Sun Jan 17 22:16:10 2010 UTC (2 days, 1 hour ago) by tal_aloni
bugfix related to rev. 3105

Revision 3205 - Directory Listing
Modified Sun Jan 17 20:17:30 2010 UTC (2 days, 3 hours ago) by tal_aloni
Internal: separation between video sample processing and sample delivery. (it's now possible to process video sample without delivering it)

I suspect 3205 or 3206 work by tal_aloni on deinterlacing related files will be the cause of the bug.

[XhmikosR]

Check the link in my signature for r3206. r3205 caused a blank video screen for me so I didn't uploaded. (I actually reported this to tal.aloni via IRC and he committed r3206 which fixed the problem).