Re: [Qemu-devel] Webcams under KVM and Linux

[Andreas Färber]

Hello,

Am 29.05.2011 um 15:01 schrieb Peter Baitz:

> > [...] You should notice that it is not just adding
> > ISOC and USB 2.0 support, but also to prioritize the processing of  
> > isoc
> > packets on a virtual environment, and to provide enough throughput  
> > for
> > video streams
>
> [...] Please check the qemu-devel mailing list archive, specifically  
> regarding recent discussions about EHCI (USB 2.0). Some of those  
> threads address isochronous transfer as well.
>
> In the meantime, you could also try to assign a complete host  
> controller to the guest to get a webcam working. I tried this a  
> while ago, though the result was only moderately well working here.

> [...] I would indeed like to hear more about what the project is  
> adding to KVM - Qemu to allow video to work with webcams
[...]
> I was told I could try to add a complete host controller to the  
> guest, but am not entirely sure I understand what that means?   
> Looking for specifics?  Is there a suggestion for doing this during  
> install of the KVM guest, or can this be done while the guest is  
> running, or otherwise?

Independent of the ongoing EHCI work, I remember a patch specifically  
for webcams a while ago, try searching the archives for V4L.

Andreas