[arch-general] Sunplus (Philips) webcam problem

[Thomas Bächler]

Sergey Manucharian schrieb:
> On Sun, 26 Oct 2008 11:40:45 +0100
> Thomas Bächler <thomas at archlinux.org> wrote:
> ...
>> What do you mean be "works incorrectly"? The new gspca drivers
>> only support v4l2 and don't do conversion in the driver. 
> Well, indeed with v4l driver the mplayer shows a messed image with
> swapped lines and weird colors, but it fails at all with v4l2:
> 
> Playing tv://.
> TV file format detected.
> Selected driver: v4l2
>  name: Video 4 Linux 2 input
>  author: Martin Olschewski <olschewski at zpr.uni-koeln.de>
>  comment: first try, more to come ;-)
> Selected device: Generic Digital camera
>  Capabilites:  video capture  read/write  streaming
>  supported norms:
>  inputs: 0 = spca561;
>  Current input: 0
>  Current format: unknown (0x47524247)
> tv.c: norm_from_string(NTSC): Bogus norm parameter, setting default.
> v4l2: ioctl enum norm failed: Invalid argument
> Error: Cannot set norm!
> Selected input hasn't got a tuner!
> v4l2: ioctl set mute failed: Invalid argument
> v4l2: ioctl query control failed: Invalid argument
> v4l2: ioctl query control failed: Invalid argument
> ==========================================================================
> Cannot find codec matching selected -vo and video format 0x47524247.
> Read DOCS/HTML/en/codecs.html!
> ==========================================================================
> v4l2: ioctl set mute failed: Invalid argument
> v4l2: 0 frames successfully processed, 0 frames dropped.

Hmm, mplayer should support it all on its own. But you have to set some 
options, tv:// won't be enough. Here is what works for me:

mplayer tv:// -tv 
driver=v4l2:noaudio:width=640:height=480:device=/dev/video0 -fps 30

>> You need libv4l
>> to do that (either built into your application or as LD_PRELOAD
>> wrapper). I was going to upload that package to extra just now, but
>> the server with the source tarball is unavailable right now.
> 
> Ok, I'll try libv4l, thanks!

Should be in extra now. Version 0.5.2 should hit the mirrors soon. I 
think it even fixes a bug with your camera, not sure.

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