graphedit files in Avisynth 2.56 scripts

[chros]

I have a trailer in SVQ3+QDM2+mov format and I wanted to convert into x264+aac.
I have managed to do so with graphedit, gabest's external mp4splitter, ffdshow, and avisynth.

the avs script:
V = DirectShowSource("3v.grf", audio=False, fps=23.96)
A = DirectShowSource("3a.grf", video=False)
AudioDub(V, A)
the 3v.grf file:
1.mov -> MP4splitter -> ffdshow-video-decoder
the 3a.grf file:
1.mov -> MP4splitter -> ffdshow-audio--decoder

There is only 1 problem which I don't understand: the video colorspaces. Avisynth is only connected to ffdshow if I uncheck "Connect to compatible filters only".
I saw (within the OSD feature of ffdshow) that weather I check or uncheck this option the output colorspace is always "YV12,adj". And I saw that "DirectShowSource only accepts YV12, YUY2, ARGB, RGB32 and RGB24 video formats ...".
So what is going on? Or how should I check the output colorspace when it doesn't connect?

Thanks

Ps: the SQV3 (Sorenson 3) codec is in what group of codecs ? (eg. MPEG4 ASP ? )

[foxyshadis]

In avisynth, try using Info() to see what colorspace you're being given. Also, SVQ3 is based somewhat on MPEG1/2, but includes a lot of proprietary extentions.

[chros]

In avisynth, try using Info() to see what colorspace you're being given.
Thanks for the hint. I rewrite the script to this, and it works fine (displaying the info) when I'm uncheking the problematic option. (It displays YV12 .)
But how can I see in the other case? Or ... I don't know...
V = DirectShowSource("3v.grf", audio=False, fps=23.976).Info
A = DirectShowSource("3a2.grf", video=False)
AudioDub(V, A)
Also, SVQ3 is based somewhat on MPEG1/2, but includes a lot of proprietary extentions.
In this topic ( http://forum.doom9.org/showthread.php?p=461582#post461582 ) I read:
available MPEG-4 ASP Codecs
ASP codecs are available atm from XviD (binary), DivX5, DivX4/OpenDivX, ffmpeg/ffvfw/ffdshow, 3ivx, Nero Digital, Skal, Quicktime, mpegable, Envivio, Sorenson and many more...
So ? :)
Or Sorenson has written several codecs ? (I know about SQV1)

[foxyshadis]

Sorenson has an MPEG-4 ASP codec as well, called "MPEG-4 Pro", it's part of the Squeeze suite. Sorenson Video 3 is basically a hybrid technology of all the things they liked from different standards, mostly MPEG and ITU, and random stuff they wanted like layers & transperency. It's the direct predecessor of Spark/FLV1, as well, they both have very similar video quality & features and use the same basic compression engines. I think FLV1's a little simpler, but I might be wrong.

In the other case, I'm not sure, but it's best to leave it on so ffdshow can always choose the best colorspace for the application.

[IanB]

Get the directshowsource.dll mentioned in this thread, DSS PCM32 audio bug in 2.5.7a3 (http://forum.doom9.org/showthread.php?p=861949#post861949) and use the log option to see how directshow is attempting pin connections. The log should be read with the source code to see what each entry means. If C++ is not your bag attach a copy of the log here, many can interprete it for you.