ffdshow tryouts project: Discussion & Development

[avivahl]

I have fixed at rev 2849.Thank you (will test once alexins compile the new revision).

I also noticed that the behavior of the "Vertical Position" has changed a bit. I now have to use ~95% (instead of 90%) to get it where I want it. Isn't 90% too low as a default?

[EpsilonX]

About the subtitles in FFDShow...
Can it be used to position subtitles from a DVD...
Let's say, below the picture as in the black bar...
So it won't be on top of the video...
If it's possible, is it possible with ZoomPlayer or MPC-HC..?
IIRC both player use different method in displaying subtitle...
CMIIW...
Hoping to be able to use the smoothing option available...
Unless it's actually active all this time... :D

BTW...
IIRC before build 28xx, I didn't have to enable FFDShow's subtitle to display subtitles in ZP...
But now, it will cause the most bottom part of the monitor to be "highlighted" in white...
Like 2-5 pixel in height across the whole screen width...
But if I enable FFDShow's subtitle, it's all fine...
Tried it with a clean profile, same thing...
It only happens with the Resize filter active though...
No biggie, just curious... :D

[breez]

indeed, I've added a VST vu-meter and on my loudest 24/96 5.1 tracks, I have to lower the volume to 45% in ffdshow prior to the matrix to avoid clipping > -0.1dB

I'd like to take it in account directly in the Logic 7 matrix, but w/ the inverted phases and stuff I've got no idea how to do so :o

it's not very clear how to compute coeffs : http://ac3filter.net/guides/mixing_matrix

Sum the absolute values of the coeffs for one channel and then divide every coeff by that number. That guarantees no clipping.

Example (the first matrix you posted): 0.853 + 0.5 + 0.14 + 0.5 + 0.5 + 0.5 = 2.993

Coeffs become 0.285, 0.167, -0.047 and so on.

[leeperry]

Sum the absolute values of the coeffs for one channel and then divide every coeff by that number. That guarantees no clipping.

Example (the first matrix you posted): 0.853 + 0.5 + 0.14 + 0.5 + 0.5 + 0.5 = 2.993

Coeffs become 0.285, 0.167, -0.047 and so on.
well OK, but lowering the volume to 45% in ffdshow prior to the matrix just "works"...I never clip, even on my most dynamic 24/96 lossless stuff and these psychoacoustic coeffs do wonders :eek:

any idea how to reach 45% if 100% is 1+0.707+0.9-0.38+0.707 please? :o

http://www.image-load.eu/out.php/t156027_logic7.png (http://www.image-load.eu/out.php/i156027_logic7.png) http://www.image-load.eu/out.php/t156028_uuuu.png (http://www.image-load.eu/out.php/i156028_uuuu.png)

[leeperry]

BTW, is there any working source filter for FLAC? so I could use ffdshow's decoder?

I'm not too lucky w/ madflac on 24/96 files these days....as soon as I add ffdshow on top of it I get garbled audio on some files :confused:

[STaRGaZeR]

You can install the mingw64 + yasm, and more…
cd /src/ffmpeg
make 64BIT=yes

cd ../mplayer
make 64BIT=yes

cd ../codecs/libmpeg2
make 64BIT=yes

I've already installed them, even make64 but this doesn't matter. The problem is that as soon as it starts the compilation I get this error:

http://thumbnails12.imagebam.com/3146/898bdc31457128.gif (http://www.imagebam.com/image/898bdc31457128)

I'm using MinGW64 from here: http://sourceforge.net/project/showfiles.php?group_id=202880&package_id=311650, mingw-w64-bin_i686-mingw_20090326.zip to be exact.

[Brazil2]

http://www.image-load.eu/out.php/i155923_mix00.png
What's the point to have a negative value for the FR channel in the Left output and a negative value for the FL channel in the Right output ? I don't get it... :confused:

[leeperry]

What's the point to have a negative value for the FR channel in the Left output and a negative value for the FL channel in the Right output ? I don't get it... :confused:
phase inversion my friend, these values are based on psychoacoustic principles...try it, it's great :)

ok MPC HC has a standalone FLAC source filter, hopefully ffdshow will play all my 24/96 FLAC files :)

[Brazil2]

phase inversion
AFAIK that should be OK for DTS only.
But anyway since there is no output from the FR to the Left output I still don't get it. As we are talking about FRONT channels and not the Back and Surround ones.

[leeperry]

it's the Logic 7 matrix from Lexicon, it uses psychoacoustic principles to widen the soundstage...mostly it sends a very low copy of the opposite front channel to create a sorta "out of head" sound, but not as hollow as Dolby Headphone/Virtual Speaker, much more subtle...it's really awesome on headphones

it seems that the MPC HC flac source filter is tied to its own audio decoder, it doesn't let ffdshow decode on my XP box.....and I sure hope that it doesn't downsample 24/96 to 16/48, but at least it doesn't give garbled audio like madflac :)

HMS takes over for FLAC embedded in MKV, so ffdshow does the decoding :)

PS: I got 2 profiles for music, one for 6 channels audio, one for stereo...it works w/ madflac/WavPack/.wav files but not w/ the internal MPC HC decoder...ffdshow always loads the stereo profile even though it shows "6 channels PCM uncompressed" as input :confused:

and problem remains if I make one profile for stereo and one for the rest...

here's a 5.1 24/96 FLAC sample :
http://www.megaupload.com/?d=LYMN7DI4

here's what MPC HC says, and yet ffdshow will pick my "2 channels" profile even though it says "6 channels uncompressed" as input ?!

same problem occurs w/ AC3Filter...apparently the number of channels condition is buggy :(

CLSID: {1930D8FF-4739-4E42-9199-3B2EDEAA3BF2}
Filter: C:\96000.flac
Pin: Output

- Connection media type:

Audio: FLAC 96000Hz 6ch 13824Kbps

AM_MEDIA_TYPE:
majortype: MEDIATYPE_Audio {73647561-0000-0010-8000-00AA00389B71}
subtype: Unknown GUID Name {1541C5C0-CDDF-477D-BC0A-86F8AE7F8354}
formattype: FORMAT_WaveFormatEx {05589F81-C356-11CE-BF01-00AA0055595A}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 1
cbFormat: 18

WAVEFORMATEX:
wFormatTag: 0xf1ac
nChannels: 6
nSamplesPerSec: 96000
nAvgBytesPerSec: 1728000
nBlockAlign: 1
wBitsPerSample: 24
cbSize: 18 (extra bytes)

[haruhiko_yamagata]

I've already installed them, even make64 but this doesn't matter. The problem is that as soon as it starts the compilation I get this error:

http://thumbnails12.imagebam.com/3146/898bdc31457128.gif (http://www.imagebam.com/image/898bdc31457128)

I'm using MinGW64 from here: http://sourceforge.net/project/showfiles.php?group_id=202880&package_id=311650, mingw-w64-bin_i686-mingw_20090326.zip to be exact.
Try 'make clean' and rebuild.

[STaRGaZeR]

Try 'make clean' and rebuild.

That did the trick :)

[puffpio]

software used:

media player classic home cinema 64 bit
ffdshow tryouts rev 2832 64 bit
windows 7 64 bit

I MPC-HC I uncheck the internal filters for H264
But ffdshow will only decode H264 if it is set to use libavcodec. If I set it to use ffmpeg-mt, then I get an error that says the following pin(s) could not find a connectable filter. is this a known issue? or how can I get ffmpeg-mt to work?

D:\test\vid.mp4::GPAC ISO Video Handler

Media Type 0:
--------------------------
Video: MPEG4 Video (H264) 320x240 29.97fps

AM_MEDIA_TYPE:
majortype: MEDIATYPE_Video {73646976-0000-0010-8000-00AA00389B71}
subtype: Unknown GUID Name {31637661-0000-0010-8000-00AA00389B71}
formattype: FORMAT_MPEG2_VIDEO {E06D80E3-DB46-11CF-B4D1-00805F6CBBEA}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 1
cbFormat: 161

VIDEOINFOHEADER:
rcSource: (72081392,35106736)-(34981368,1078664988)
rcTarget: (72081424,48)-(34981368,1078664988)
dwBitRate: 0
dwBitErrorRate: 0
AvgTimePerFrame: 333673

VIDEOINFOHEADER2:
dwInterlaceFlags: 0x00000000
dwCopyProtectFlags: 0x00000000
dwPictAspectRatioX: 320
dwPictAspectRatioY: 240
dwControlFlags: 0x00000000
dwReserved2: 0x00000000

MPEG2VIDEOINFO:
dwStartTimeCode: 0
cbSequenceHeader: 29
dwProfile: 0x00000042
dwLevel: 0x0000000d
dwFlags: 0x00000004

BITMAPINFOHEADER:
biSize: 40
biWidth: 320
biHeight: 240
biPlanes: 1
biBitCount: 24
biCompression: avc1
biSizeImage: 0
biXPelsPerMeter: 0
biYPelsPerMeter: 0
biClrUsed: 0
biClrImportant: 0

pbFormat:
0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 00 00 00 00 69 17 05 00 00 00 00 00 ........i.......
0030: 00 00 00 00 00 00 00 00 40 01 00 00 f0 00 00 00 ........@...ð...
0040: 00 00 00 00 00 00 00 00 28 00 00 00 40 01 00 00 ........(...@...
0050: f0 00 00 00 01 00 18 00 61 76 63 31 00 00 00 00 ð.......avc1....
0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0070: 00 00 00 00 1d 00 00 00 42 00 00 00 0d 00 00 00 ........B.......
0080: 04 00 00 00|00 15 67 42 c0 0d 9a 74 0a 0f d0 80 ......gBÀ.št..Ѐ
0090: 00 00 32 00 00 0b b5 47 8a 15 50 00 04 68 ce 32 ..2...µGŠ.P..hÎ2
00a0: c8 È


Media Type 1:
--------------------------
Video: MPEG4 Video (H264) 320x240 29.97fps

AM_MEDIA_TYPE:
majortype: MEDIATYPE_Video {73646976-0000-0010-8000-00AA00389B71}
subtype: Unknown GUID Name {31435641-0000-0010-8000-00AA00389B71}
formattype: FORMAT_MPEG2_VIDEO {E06D80E3-DB46-11CF-B4D1-00805F6CBBEA}
bFixedSizeSamples: 1
bTemporalCompression: 0
lSampleSize: 1
cbFormat: 161

VIDEOINFOHEADER:
rcSource: (72081392,35106736)-(34981656,1078664988)
rcTarget: (72081424,48)-(34981656,1078664988)
dwBitRate: 0
dwBitErrorRate: 0
AvgTimePerFrame: 333673

VIDEOINFOHEADER2:
dwInterlaceFlags: 0x00000000
dwCopyProtectFlags: 0x00000000
dwPictAspectRatioX: 320
dwPictAspectRatioY: 240
dwControlFlags: 0x00000000
dwReserved2: 0x00000000

MPEG2VIDEOINFO:
dwStartTimeCode: 0
cbSequenceHeader: 29
dwProfile: 0x00000042
dwLevel: 0x0000000d
dwFlags: 0x00000004

BITMAPINFOHEADER:
biSize: 40
biWidth: 320
biHeight: 240
biPlanes: 1
biBitCount: 24
biCompression: AVC1
biSizeImage: 0
biXPelsPerMeter: 0
biYPelsPerMeter: 0
biClrUsed: 0
biClrImportant: 0

pbFormat:
0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 00 00 00 00 69 17 05 00 00 00 00 00 ........i.......
0030: 00 00 00 00 00 00 00 00 40 01 00 00 f0 00 00 00 ........@...ð...
0040: 00 00 00 00 00 00 00 00 28 00 00 00 40 01 00 00 ........(...@...
0050: f0 00 00 00 01 00 18 00 41 56 43 31 00 00 00 00 ð.......AVC1....
0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0070: 00 00 00 00 1d 00 00 00 42 00 00 00 0d 00 00 00 ........B.......
0080: 04 00 00 00|00 15 67 42 c0 0d 9a 74 0a 0f d0 80 ......gBÀ.št..Ѐ
0090: 00 00 32 00 00 0b b5 47 8a 15 50 00 04 68 ce 32 ..2...µGŠ.P..hÎ2
00a0: c8 È

[Leak]

ffdshow tryouts rev 2832 64 bit

*cough*Revision 2838*cough* (http://forum.doom9.org/showthread.php?p=1267600#post1267600)

[haruhiko_yamagata]

About the subtitles in FFDShow...
Can it be used to position subtitles from a DVD...
Let's say, below the picture as in the black bar...
So it won't be on top of the video...
If it's possible, is it possible with ZoomPlayer or MPC-HC..?
IIRC both player use different method in displaying subtitle...
CMIIW...
Hoping to be able to use the smoothing option available...
Unless it's actually active all this time... :D

It's impossible or very hard. DVD application requires 4:3 or 16:9 display aspect ratio. If ffdshow add borders, DVD menu won't work.

BTW...
IIRC before build 28xx, I didn't have to enable FFDShow's subtitle to display subtitles in ZP...
But now, it will cause the most bottom part of the monitor to be "highlighted" in white...
Like 2-5 pixel in height across the whole screen width...
But if I enable FFDShow's subtitle, it's all fine...
Tried it with a clean profile, same thing...
It only happens with the Resize filter active though...
No biggie, just curious... :D
Could you give me more details?
What is the source you are playing? Is it a file or DVD?
What is the resolution of video?
Could you send me your settings (go to 'Profiles/ Preset settings' and press 'Save to file')?

[haruhiko_yamagata]

Same problem as clsid, ffdshow just fails to connect when -mt is selected as decoder.
Please try this.

launch \Program Files\Microsoft SDKs\Windows\v6.0\Bin\Depends.exe
Drag and drop ffmpegmt.dll there.

What does it say?

[haruhiko_yamagata]

Thank you (will test once alexins compile the new revision).

I also noticed that the behavior of the "Vertical Position" has changed a bit. I now have to use ~95% (instead of 90%) to get it where I want it. Isn't 90% too low as a default?
Yes, the behavior has been changed.
I have changed default to 94%.

[Leak]

It's impossible or very hard. DVD application requires 4:3 or 16:9 display aspect ratio. If ffdshow add borders, DVD menu won't work.
I think you should say "using DVD menus with the mouse won't work". Using a remote control or the keyboard (or just taking into account that the mouseover spots are actually above/below the image) will continue to work with it...

[mark0077]

haruhiko, did you make any changes to ffdshow regarding enforcing 4:3 or 16:9 or are you still not sure what to do...

[clsid]

Please try this.

launch \Program Files (x86)\Microsoft SDKs\Windows\v6.0\Bin\Depends.exe
Drag and drop ffmpegmt.dll there.

What does it say?
Here is a screenshot:
http://i40.tinypic.com/zjch8p.png

[STaRGaZeR]

Please try this.

launch \Program Files (x86)\Microsoft SDKs\Windows\v6.0\Bin\Depends.exe
Drag and drop ffmpegmt.dll there.

What does it say?

It was in \Program Files\Microsoft SDKs\Windows\v6.0\Bin\Depends.exe

http://thumbnails12.imagebam.com/3152/7ae09c31517167.gif (http://www.imagebam.com/image/7ae09c31517167)

If you need anything else let me know. ffmpegmt.dll is from xvidvideo.ru's rev2849 x64.

[EpsilonX]

Could you give me more details?
What is the source you are playing? Is it a file or DVD?
What is the resolution of video?
Could you send me your settings (go to 'Profiles/ Preset settings' and press 'Save to file')?

Source is DVD...
Tried using clean install rev2849 from XvidVideo.Ru...
The only setting changed are...

1.Enable libmpeg2 + DVD Decoding option in Codecs
2.Set Resize to 1360x768, select "No Aspect Ratio Correction"

Notice the white line across the screen when the Subtitle option is disabled...

[STaRGaZeR]

Source is DVD...
Tried using clean install rev2849 from XvidVideo.Ru...
The only setting changed are...

1.Enable libmpeg2 + DVD Decoding option in Codecs
2.Set Resize to 1360x768, select "No Aspect Ratio Correction"

Notice the white line across the screen when the Subtitle option is disabled...

My experience:

1.- ffdshow displays DVD subtitles even when the subtitle filter is disabled and MPC's internal subtitle renderer is enabled. It does not autoload with normal files.
2.- The white line appears only if resize is enabled and ffdshow is displaying autoloaded subtitles and the subtitle filter is disabled. Changing any of these will make it disappear.

[haruhiko_yamagata]

Here is a screenshot:

Which ffmpegmt.dll did you use?
It looks like a problem in libpthreadGC2.a.

[haruhiko_yamagata]

It was in \Program Files\Microsoft SDKs\Windows\v6.0\Bin\Depends.exe

http://thumbnails12.imagebam.com/3152/7ae09c31517167.gif (http://www.imagebam.com/image/7ae09c31517167)

If you need anything else let me know. ffmpegmt.dll is from xvidvideo.ru's rev2849 x64.
It looks perfect...
I don't know why it does not load.

[clsid]

I used the one I build myself.

Yes, I also suspect a problem with libpthreadGC2.a. Which one are you currently using?
The one from MinGW64 project page (http://sourceforge.net/project/showfiles.php?group_id=202880&package_id=293298) gives me linking errors. The one build by xxl links ok, but gives broken dll.

The linking errors are:
libavcodec/pthread.o:pthread.c:(.text+0x61): undefined reference to `_imp__pthread_mutex_lock'
libavcodec/pthread.o:pthread.c:(.text+0x68): undefined reference to `_imp__pthread_mutex_unlock'
...
the library only contains definitions without the "_imp__" prefix.

[STaRGaZeR]

It looks perfect...
I don't know why it does not load.

I also tried with graphstudio64, ffdshow just does not accept the connection.

[haruhiko_yamagata]

The one from MinGW64 project page (http://sourceforge.net/project/showfiles.php?group_id=202880&package_id=293298) gives me linking errors. The one build by xxl links ok, but gives broken dll.

The linking errors are:

the library only contains definitions without the "_imp__" prefix.If you mean the one in the self extracting exe file, it's for x86. You have to apply pthreads-w64.patch to the source code and compile or download .a and .dll.

[clsid]

No, I am using the standalone libpthreadGC2.a file.

[puffpio]

*cough*Revision 2838*cough* (http://forum.doom9.org/showthread.php?p=1267600#post1267600)
nice! thanks. I'll grab myself a more recent build

[puffpio]

nice! thanks. I'll grab myself a more recent build
I installed revision 2850 of ffdshow 64 bit build (from here http://www.xvidvideo.ru/content/view/699/5/)
and still, when I set H264 to be decoded by ffmpeg-mt, media player classic home cinema still can't find a connectable filter..switching to libavcodec works fine still...

any ideas?

[haruhiko_yamagata]

@puffpio
Please read a few pages from the latest of this thread.

[morsa]

Will anybody add support for DVCproHD in FFDSHOW?

[fastplayer]

Will anybody add support for DVCproHD in FFDSHOW?
Your question has already been answered:
http://forum.doom9.org/showthread.php?p=1267163#post1267163

[ikarad]

I have re-enabled external subtitles file for DVD. I disabled for a reason, DVDs may have DVD subtitles and closed caption. If three kind of subtitles are displayed at the same time, it's just a mess. And this really happens (strictly speaking, external subtitles are not displayed at the same time as DVD subtitles, but if DVD subtitles disappear, external subtitles appear immediately...), ffdshow just does not crash.

Thanks. But There is a problem.
Now, external subtitles are displayed but they are desynchronized with video.
At the start of the dvd there is nearly 10 seconds of ad or logos displays and then, the movie start (normally subtitles start also with movie and not logos or ad).

But here, subtitles start with logos and ad. Consequently when the movie start, some subtitles are displayed before the start of movie and there is a gap with voice in the movie and subtitles.

the gap depends on the lenght of ad or logos displayed before the movie.

here an example:
http://www.zshare.net/info.html?58171633-15b887cac10caf87421ce669c23063c5

subtitle file:
http://www.zshare.net/info.html?58171999-660b36e99b3ecc4c87a68229c75747ad

ffdshow 2850,

fdshow tracker
https://sourceforge.net/tracker/?func=detail&aid=2730487&group_id=173941&atid=867360

video captured by fraps to show the problem
http://www.zshare.net/info.html?58172420-7bf85ad1e00b79286035a52df9223be1

[haruhiko_yamagata]

Thanks. But There is a problem.
Now, external subtitles are displayed but they are desynchronized with video.
At the start of the dvd there is nearly 10 seconds of ad or logos displays and then, the movie start (normally subtitles start also with movie and not logos or ad).


I knew it, please add delay (in the dialog 'Delay:' plus 'Keys & remote' numpad + and -) until I have time to fix it.

[haruhiko_yamagata]

haruhiko, did you make any changes to ffdshow regarding enforcing 4:3 or 16:9 or are you still not sure what to do...
Maybe the AR must match either with 4:3, 16:9 or container AR.
BTW, I'm working on DVD's ff and rew.

[Joniii]

Is there any way to get ffdshow working again on Windows 7 (build 7068) with Xvid/H.264/VC-1/MPEG-2?

[Leak]

Is there any way to get ffdshow working again on Windows 7 (build 7068) with Xvid/H.264/VC-1/MPEG-2?
You might want to read this thread (http://forum.doom9.org/showthread.php?t=145906); somewhere further down there's some discussion what you need to fiddle with in the registry to make MS's codecs less "special"...

(NB: I haven't used Windows 7 yet, so I can't guarantee it'll work...)

np: Autechre - Draun Quarter (Envane)

[ikarad]

I knew it, please add delay (in the dialog 'Delay:' plus 'Keys & remote' numpad + and -) until I have time to fix it.

thanks but I hope you will fix as soon as possible

[yesgrey]

anyone know what 45% of -0.38 is :confused: Not -0.844 apparently...

-0.38*0.45 = -0.171

[leeperry]

-0.38*0.45 = -0.171
indeed, you nailed it! I thought because it was out of phase it had to be divided by 0.45 :rolleyes:

ah well, hopefully the random glitches on my 24/96 5.1 content will vanish...it never occured before I started playing around w/ the ffdshow volume filter :confused:

:thanks:

[yesgrey]

iI thought because it was out of phase it had to be divided by 0.45 :rolleyes:
No, the out-of-phase is handled by the minus sign.;)

[mark0077]

Seeing as you guys are talking about audio, why does the ffdshow mixer feature to expand stereo to rear channels only give them 50% volume. Shouldn't it just send an exact copy of the front channels to the rear channels. This is what I am hoping to achieve.

[leeperry]

it's all explained on that site from David Griesinger(main DSP engineer for Lexicon/Harman Kardon) : http://www.davidgriesinger.com/

especially this PPT :
http://www.davidgriesinger.com/surround_from_stereo2.ppt

and especially this slide :
http://www.image-load.eu/out.php/t156390_mixx.png (http://www.image-load.eu/out.php/i156390_mixx.png)

you need to lower the volume of the rear channels otherwise the loudness would be too high.

if you look hard enough, he publishes all his matrixes for 5.1>stereo, stereo>5.1 and stereo>7.1....this would be a great asset to have them in ffdshow, for uncompromised SQ :)

his Logic7 matrixes are the best on the market, as I understand it!

but Haruhiko is apparently the only active ffdshow coder, and he mostly focuses on ffdshow video...so fix the matrixes yourself, the most valuable infos I found are on this engineer's site....he's got it all figured out :devil:

[albain]

@clsid, Haruhiko, _xxl

I have prepared a set of 2 C# projects

Project 1 FFDShowAPI .Net library : this library (used by my plugin Media Control) can be integrated into third party players to communicate with and control FFDShow.
Project 2 sample application in C# too that uses some features of the library (find a FFDShow instance, control playback, list and switch subtitle/audio streams...)


This code is free to use and may be promoted to enhance the integration of FFDShow inside other projects.
The only requirement is to have a .Net compiler (visual studio)


I would like to know how to integrate it into subversion.

Here is the zip package of the sources :
FFDShowAPI .Net sources (http://damienbt.free.fr/FFDShowAPI.zip)


Features of the library :

Enable and set postprocessing intensity
Enable and set picture properties (brightness, hue...)
Enable and set horizontal or vertical crop
Enable and set resize
Enable sharpen
Enable noise reduction
Enable deinterlacer
Set subtitles delay
Set audio delay
List and select an external subtitle file
List and select subtitle/audio streams
List and select chapters (whenever supported)
Fast forward/rewind functionality
Set active video preset
Set default audio or video preset
Set an OSD message to be displayed at a given position


FYI, this library uses the FFDShowRemoteAPI integrated into FFDShow video decoder.

[mark0077]

it's all explained on that site from David Griesinger(main DSP engineer for Lexicon/Harman Kardon) : http://www.davidgriesinger.com/

especially this PPT :
http://www.davidgriesinger.com/surround_from_stereo2.ppt

and especially this slide :
http://www.image-load.eu/out.php/t156390_mixx.png (http://www.image-load.eu/out.php/i156390_mixx.png)

you need to lower the volume of the rear channels otherwise the loudness would be too high.

if you look hard enough, he publishes all his matrixes for 5.1>stereo, stereo>5.1 and stereo>7.1....this would be a great asset to have them in ffdshow, for uncompromised SQ :)

his Logic7 matrixes are the best on the market, as I understand it!

but Haruhiko is apparently the only active ffdshow coder, and he mostly focuses on ffdshow video...so fix the matrixes yourself, the most valuable infos I found are on this engineer's site....he's got it all figured out :devil:

Very interesting set of slides but he seems to talk about complicated mixing with some sort of goal different to mine (just hear my stereo content from front and rear). Even talking about panning, etc makes me think this is not what I am after AT ALL.

I just want the original stereo sound untouched sent to rear channels, nothing more. This has always sounded gorgeous to me compared to any of these advanced expanders, including the dolby ones. They never have sounded good to me for some reason.

I can easily create a custom matrix in ffdshow.... I only want that matrix used obv when stereo content comes in, not on 5.1 content. Can't seem to achieve this through ffdshow presets, tried a few months back and changing preset on input channel number didn't work for some reason. I shall try again.

[leeperry]

he seems to talk about complicated mixing with some sort of goal different to mine (just hear my stereo content from front and rear)
[...]
Can't seem to achieve this through ffdshow presets, tried a few months back and changing preset on input channel number didn't work
well the ffdshow audio channels detection for automatic profiles doesn't work with some decoders(MPC HC/AC3filter), that might be your problem.

I've filed a ticket on the ffdshow bug tracker, hopefully someone will be able to look into it http://forum-images.hardware.fr/images/perso/sniperr.gif

well these algorithms make very gorgeous multichannel conversions from stereo, nothing to do w/ DPL2 and stuff...this is far more refined ;)

if I had known about ffdshow when I was a kid, I would have continued coding in K-Seka assembler on Amiga :rolleyes:

[mark0077]

well the ffdshow audio channels detection for automatic profiles doesn't work with some decoders(MPC HC/AC3filter), that might be your problem.

I've filed a ticket on the ffdshow bug tracker, hopefully someone will be able to look into it http://forum-images.hardware.fr/images/perso/sniperr.gif

well these algorithms make very gorgeous multichannel conversions from stereo, nothing to do w/ DPL2 and stuff...this is far more refined ;)

if I had known about ffdshow when I was a kid, I would have continued coding in K-Seka assembler on Amiga :rolleyes:

Yeah would be great to get that fixed. My soundcard drivers only has some of the dolby expanders, a dts neo one I think, and some D3D GX which I don't have a clue what it is. Would be fantastic to be able to force ffdshow to be loaded in EVERY app just to perform this stereo -> multichannel conversion, even games etc. Would love to plug it into winamp especially, just to do the expansion.

[leeperry]

well I've ditched all the other audio players because 1)ffdshow is unmatched for audio processing(too bad the winamp plugin support doesn't work too well, but Haruhiko & Christian Budde are looking into it) and 2)MPC opens really fast, 1/10" of a second...I like that..foobar is just as slow as KMP, they need like 1 or 2 seconds to open :rolleyes:

you can force ffdshow audio in WinDVD9 and many other apps from my experience if you check "uncompressed : all" in its settings.

PS: having the "number of channels" condition working w/ the MPC HC decoder would enable me to stop using madflac...which is giving static in WaveOut on XP :(