umlaeute/v4l2loopback — Issue #14: (kernel 3.1.10)Cheese and FlashPlayer don't detect v4l2loopback as video (camera) device. 
Author: manel85
Created: 2012-02-29 10:54:10+00:00
State: open

Hello, I installed v4l2loopback as kernel module. I've registered properly using "insmod" and a video device is created at /dev/video1 (also I check through "lsmod" if module was loaded), but it isn't detected by any vl2-capable program as cheese, vlc or FlashPlayer.
In "dmesg": [ 1678.781193] v4l2loopack driver version 0.5.0 loaded.
I'm using Ubuntu 11.04, custom kernel 3.1.10.

No example works for me:

- Example "test" with xawtv as consumer:
WARNING: No DGA direct video mode for this display.
/dev/video1 [v4l2]: no overlay support
v4l-conf had some trouble, trying to continue anyway
Warning: Cannot convert string "-*-ledfixed-medium-r-*--39-*-*-*-c-*-*-*" to type FontStruct

- "yuv4mpeg" with mplayer as consumer:
MPlayer 1.0rc4-4.5.2 (C) 2000-2010 MPlayer Team
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing movie.mp4.
libavformat file format detected.
[lavf] stream 0: video (h264), -vid 0
[lavf] stream 1: audio (aac), -aid 0, -alang und
VIDEO: [H264] 480x270 24bpp 23.976 fps 851.8 kbps (104.0 kbyte/s)
Clip info:
major_brand: mp42
minor_version: 0
compatible_brands: isomiso2avc1mp41mp42
encoder: Lavf52.78.2
Error opening/initializing the selected video_out (-vo) device.
==========================================================================
Opening audio decoder: [faad] AAC (MPEG2/4 Advanced Audio Coding)
AUDIO: 44100 Hz, 2 ch, s16le, 95.8 kbit/6.79% (ratio: 11980->176400)
Selected audio codec: [faad] afm: faad (FAAD AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
AO: [pulse] 44100Hz 2ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A: 44.4 (44.4) of 87.2 (01:27.2) 1.1%

Another virtual driver as VIVI is detected by mplayer and FlashPlayer.

Any thought? Cheers.