[AG-TECH] Codec Options and Capture device

[Douglas Baggett]

Interesting. It DOES crash..just not that often :) But works when it  
doesn't crash.

I'm looking forward to the day when we have H.264 and some tighter  
audio codecs (which has probably been discussed here before. Apologies  
if so). I was thinking of using it (for collaboration) with a group on  
the internet I'm part of (non multicast..so via bridge) but  
unfortunately vic/rat are just beyond use (for more than one to one)  
on a cable modem. Bandwidth is a little high.

-Doug B
OCI/NSF

On Dec 14, 2007, at 7:11 PM, Douglas Kosovic wrote:

> Douglas Baggett wrote:
>> I noticed that depending on if you choose WDM Image capture vs the  
>> Webcam capture device, different codecs are available in VIC (the  
>> beta AG release..so I guess it's the Summover VIC). Specifically  
>> the WDM Image capture allows JPEG and some others that don't show  
>> up if the webcam capture device (in my case Quickcam Pro 4000 or  
>> 5000) is selected.
>> Does anybody know why this is the case?
>
> Looking at the vic\video\grabber-win32DS.cpp file from the Sumover  
> VIC source code, there is a comment:
>
> //SV: XXX got rid of 422 format since there's no grabber returned  
> for it and vic crashes
>
>
> As JPEG requires YUV422, the JPEG option gets greyed out when the  
> DirectShow code is used, but not with the separate Video for Windows  
> code.
>
>
> Cheers,
> Doug