Re: pac207: problem with Trust USB webcam

[Frans Pop <elendil@planet.nl>]

On Wednesday 17 February 2010 09:57:48 Hans de Goede wrote:
> On 02/17/2010 01:04 AM, Adam Baker wrote:
> > On Tuesday 16 Feb 2010, Hans de Goede wrote:
> >> You need to use libv4l and have your apps patched
> >> to use libv4l or use the LD_PRELOAD wrapper.
> >>
> >> Here is the latest libv4l:
> >> http://people.fedoraproject.org/~jwrdegoede/libv4l-0.6.5-test.tar.gz
> >>
> >> And here are install instructions:
> >> http://hansdegoede.livejournal.com/7622.html
> >
> > libv4l is already packaged by lenny but doing
> >
> > LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so xawtv
> >
> > results in either a plain green screen or a mostly green screen with
> > some picture visible behind it. IIRC this is due to a bug in older
> > versions of xawtv. I didn't try vlc as it wanted to install too many
> > dependencies but I did try cheese which also wouldn't work.

Thanks a lot to you both for the pointers! I've gotten vlc to work using 
v4l1compat.so. The image is recognizable, but the color etc is way off. 
Haven't found a way to correct that yet.

But the main thing for me ATM is that it's working now.

> > which suggests that the packaged libv4l is fine and it is just the apps
> > that are an issue.
>
> Anyways I don't know how old the libv4l is in Lenny, but you will want at
> least version 0.6.0, as that has some fixes for the pac207 compression,
> and prefarably 0.6.1 as that some desirable bug fixes. The releases past
> 0.6.2 mainly add support for other webcam compressions.

I used the 0.6.3 version from the Lenny Backports repository.

Thanks again,
FJP