Re: [Linphone-users] No video with uvcvideo

[Simon Morlat]

Hi,

I have the same problem with a uvc camera.
Seems to be related with a threading bug in linphone's code or in the linux 
USB stack.
THe main difference between linphone and all other apps is that linphone is 
using 2 threads to control the driver while others don't.
I'm working at refactoring the code to have only one thread talking to the 
driver.

Simon

Le Tuesday 04 March 2008 04:54:51 Sergei Klink, vous avez écrit :
> Hello,
>
> It seems that linphone can't get the video from my webcam. On
> startup, I just get a green window or (sometimes) a segfault.
>
> Console is spammed with messages like:
>
> [jpegls @ 0x2b50fc49da20]picture size invalid (18681x32164)
> [jpegls @ 0x2b50fc49da20]only 8 bits/component accepted
> [jpegls @ 0x2b50fc49da20]mjpeg: unsupported coding type (c8)
> [jpegls @ 0x2b50fc49da20]only 8 bits/component accepted
> [jpegls @ 0x2b50fc49da20]picture size invalid (50175x65535)
> [jpegls @ 0x2b50fc49da20]picture size invalid (18681x32164)
> [jpegls @ 0x2b50fc49da20]only 8 bits/component accepted
> [jpegls @ 0x2b50fc49da20]mjpeg: unsupported coding type (cd)
> [jpegls @ 0x2b50fc49da20]invalid id 205
> [jpegls @ 0x2b50fc49da20]picture size invalid (50175x65535)
> [jpegls @ 0x2b50fc49da20]picture size invalid (18681x32164)
> [jpegls @ 0x2b50fc49da20]only 8 bits/component accepted
> [jpegls @ 0x2b50fc49da20]mjpeg: unsupported coding type (cd)
> [jpegls @ 0x2b50fc49da20]invalid id 205
>
> I'm using linphone 2.1.1 on AMD64 Gentoo, with the following webcam
> (Dell Inspiron 1720 built-in):
>
> 05a9:2640 OmniVision Technologies, Inc.
>
> Getting video directly with ffmpeg (ffmpeg -f video4linux2 -s 320x240
> -i /dev/video0 out.avi) works fine, as do other applications (ekiga,
> kopete, etc.)
>
> Any clues would be appreciated...
>
> (I've already tried several versions of ffmpeg as well as uvcvideo)
>
>
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