TV Capture issue...

Larkero wrote on 8/5/2003, 3:43 PM
I've been using VirtualDub with the Huffyuv v2.1.1 encoder to Capture TV programming from my ATI AIW 128Pro...
The Huffyuv v2.1.1 Encoder allowed me to do 24bit AVI files...
Now for some unknown reason, after I reinstalled my Win2k from scratch, VirtualDub doesn't recognize ATI's Capture Driver...

So I tried Vegas to do my TV Captures...

Questions: Why Vegas doesn't allow 24bit TV Captures ???
Why Vegas doesn't allow the use of external encoders ???
Why Vegas seems to be limited to 16bit rendering in AVI format while Ulead's COOL 3D Studio allow 32bit AVI rendering ???

Thanks for the infos,


Comments

discdude wrote on 8/5/2003, 5:12 PM
I guess by 24 bit you mean RGB24. Quite frankly, capturing at RGB24 is a waste since your AIW is only kicking out YUY2 (16 bits). Bear in mind that YUY2 is NOT the same as RGB555 (also 16 bits). It is better than that though not as good as RGB24.

VirtualDub's capture module is unfortunately obsolete. It is built around the old VFW API rather than the new DirectShow API. Therefore, none of the newer (WDM) stuff works with it without a VFW-to-WDM wrapper. I'm guessing you didn't install the wrapper. Do a search at http://www.rage3d.com/forums/ if you have problems installing the wrapper.
Larkero wrote on 8/6/2003, 2:56 PM
Interesting...

I tought that, since the Huffyuv Compression driver was "offering" me a RGB24 as a valid depth, it ment that my AIW was capable of it...

Anyway, thanks much for the Wrapper hint...
Found and installed it and it works fine now...
discdude wrote on 8/6/2003, 4:16 PM
If you ask for RGB24, the YUY2 will be upsampled to RGB24. But like I said, that is a waste since the quality will be no better than YUY2 even though it takes up the space of RGB24.