CCE and the HUFFYUV Codec

[slk001]

I have been fighting the CCE HUFFYUV codec issue for quite a while. I have the proper codec loaded onto my WIN2K Pro system, but it never seems to load (it's in the WINNT/SYSTEM32 directory). Instead, the MSYUV.DLL codec is being loaded. I have even go so far as to try to delete the MSYUV.DLL codec, but it is like the "codec that won't die". I no sooner delete it, when it reappears back in the directory.

I'm at my wit's end. Does anyone know how to get rid of the MS codec and get the CCE HUFFYUV codec to play?

[DDogg]

Did you change the VIDC.YUY2 to equal huffyuv.dll in your drivers32 section of the registry?

[r6d2]

Originally posted by DDogg
Did you change the VIDC.YUY2 to equal huffyuv.dll in your drivers32 section of the registry?
Uh...? Just in case I checked and it is set to msyuv.dll! What am I missing?

[slk001]

I wasn't aware that a .DLL required a registry entry. I will try changing this entry to my HUFFY codec.

[auenf]

Originally posted by slk001
I have even go so far as to try to delete the MSYUV.DLL codec, but it is like the "codec that won't die". I no sooner delete it, when it reappears back in the directory.

WFP

[DDogg]

From the avisynth docs:http://www.avisynth.org/index.php?page=Convert

You can also edit the registry to force your system to use HuffYUV as the system YUY2 codec. Look under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32 (the location will be different for Win9x). You should find a string named VIDC.YUY2; its value will vary according to your software and hardware configuration (for example, installation of an ATI All-In-Wonder Radeon set this to ATIVYUY.DLL). Change this to huffyuv.dll and HuffYUV will be called upon for YUY2 conversions. Encoding quality from an Avisynth script with TMPGEnc is much better with HuffYUV as the YUY2 decoder than with some other codecs; with ATIVYUY.DLL, for instance, subtle color variations became posterized. Acceptable results were possible with the ConvertToRGB filter, but this increased encoding time substantially as TMPGEnc needed to convert back to YUV as it encoded. Changing the system YUY2 codec to HuffYUV eliminates the expensive (and lossy) YUV->RGB->YUV conversion while maintaining the quality of the encoded output.

Use a convertToYuY2() at the end of scripts you are using with CCE. See CCE faq for more detail.

[r6d2]

From the HuffYUY official site:

Huffyuv is intended to replace uncompressed YUV as a video capture format. It is fast enough to compress full-resolution CCIR 601 video (720 x 480 x 30fps) in real time as it's captured on my machine. Huffyuv also supports lossless compression of RGB data, so it can be used for the output of programs like VirtualDub.
So, it seems to be useful only for captures. Is there really a benefit using it on regular DVD conversions wih CCE?

[DDogg]

So, it seems to be useful only for captures. As a byproduct, it can also replace the MSYUV.DLL, which IIRC is buggy, as the system YUY2 codec.

[r6d2]

Originally posted by DDogg
As a byproduct, it can also replace the MSYUV.DLL, which IIRC is buggy, as the system YUY2 codec.
So be it. Installed it as default.

[slk001]

Changed the entry in the registry as suggested above, and CCE works okay now.

auenf: What do you mean by WPF?

[DDogg]

I think that means Windows File Protection. The OS seeks to be self repairing and replace certain files it deems critical. It is a real PITA :)

[Poutnik]

As a byproduct, it can also replace the MSYUV.DLL, which IIRC is buggy, as the system YUY2 codec.Should I understand a note above as this ? :
"It is adviced to replace msyuv.dll by huffyuv.dll in all VIDC.XXX items,
where msyuv.dll occurs" ?
In my Win98SE there 2 other formats, IMHO closely related to YUV2, associated with msyuv.dll.

[Boulder]

You should change only vidc.yuy2 because that's what CCE uses.

[Poutnik]

You should change only vidc.yuy2 because that's what CCE uses.I do not use CCE ( neither exactly know what it is :p ).
I thought it was a general advice.

But I have realized already mentioned issue that
even my Win98SE restored VIDC.YUY2 settings in both places
(registry and system.ini) back to msyuv.dll..... :confused:

[Boulder]

I think you have to delete/rename msyuv.dll in safe mode from the System folder to make sure it doesn't get back there.

HuffYUV probably cannot handle anything else but RGB and YUY2.