[gentoo-user] Still haveing problems with audio and guvcview

[meino.cramer@gmx.de]

[-- Attachment #1: Type: text/plain, Size: 2539 bytes --]

Hi,

for my webcam (Nam Tai E&E Products Ltd. or OmniVision Technologies, Inc. Sony Playstation Eye)
I am using guvcview 1.4.5. The Webcam is attached via usb to my PC.

Since the webcams audio device was not listed in the according drop
down menu of guvcview I browsed through the kernel (2.6.39 vanilla) 
config and found, that I forgot to include the usb-audio module.

After recompiling and rebooting, guvcview now lists the webcams audio
device (but still no sound).

Unfortunately it kills any sound when using mplayer, which says:

==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264)
==========================================================================
==========================================================================
Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders
AUDIO: 44100 Hz, 2 ch, s16le, 111.8 kbit/7.92% (ratio: 13970->176400)
Selected audio codec: [ffaac] afm: ffmpeg (FFmpeg AAC (MPEG-2/MPEG-4 Audio))
==========================================================================
[AO_ALSA] alsa-lib: pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
[AO_ALSA] Playback open error: No such file or directory
[JACK] cannot open server
[AO SDL] Samplerate: 44100Hz Channels: Stereo Format s16le
[AO_ALSA] alsa-lib: pcm_dmix.c:1018:(snd_pcm_dmix_open) unable to open slave
[AO SDL] Unable to open audio: No available audio device
DVB card number must be between 1 and 4
AO: [null] 44100Hz 2ch s16le (2 bytes per sample)
Starting playback...

/dev/audio and /dev/audio1 do exist...

cat /proc/asound/cards
 0 [CameraB404271  ]: USB-Audio - USB Camera-B4.04.27.1
                      OmniVision Technologies, Inc. USB Camera-B4.04.27.1 at usb-0000:00:12.2-3, high
 1 [SB             ]: HDA-Intel - HDA ATI SB
                      HDA ATI SB at 0xfcaf8000 irq 16
 2 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xfe97c000 irq 25


When using vlc to watch tv (dvbt) the sound is interrupted
(stuutering) and/or heavily distorted (sound reminds me on sandpaper
with glas instead of the sand...;)

Before including usb-audio everything (with exception of the missing
audio device of my cam...) was working fine.

I think I will get lost without any help of the external world... ;)

Attached this email you will find my compressed kernel config.

Thank you very much in advance for any help!

Best regards,
mcc



[-- Attachment #2: lnx2639config.gz --]
[-- Type: application/x-gunzip, Size: 16323 bytes --]