I can't capture sound from tv card with mencoder. Picture comes in fine, and I can hear the sound during capture. Sound is in line-in.

I have used this command:

mencoder -tv driver=v4l2:width=720:height=576 -ovc lavc -lavcopts vcodec=mpeg2video:vbitrate=3000 -oac mp3lame -lameopts cbr:br=224 -vf scale=640:480 -o output.avi tv://

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This is the console output:

MEncoder dev-Fedora-GS-CVS-060406-15:20-4.1.0 (C) 2000-2006 MPlayer Team
CPU: Advanced Micro Devices Duron Morgan,Camaro (Family: 6, Stepping: 1)
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection.
success: format: 9 data: 0x0 - 0x0
Selected driver: v4l2
name: Video 4 Linux 2 input
author: Martin Olschewski <olschewski@zpr.uni-koeln.de>
comment: first try, more to come ;-)
Selected device: LifeView FlyVIDEO3000
Tuner cap: STEREO LANG1 LANG2
Tuner rxs: MONO STEREO LANG1 LANG2
Capabilites: video capture video overlay VBI capture device tuner read/write streaming
supported norms: 0 = PAL; 1 = PAL-BG; 2 = PAL-I; 3 = PAL-DK; 4 = NTSC; 5 = SECAM; 6 = PAL-M; 7 = PAL-Nc; 8 = PAL-60;
inputs: 0 = Television; 1 = TV (mono only); 2 = Composite1; 3 = Composite2; 4 = S-Video;
Current input: 0
Current format: BGR24
v4l2: current audio mode is : STEREO
Audio block size too low, setting to 16384!
[V] filefmt:9 fourcc:0x32315659 size:720x576 fps:25.00 ftime:=0.0400
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 44100 Hz, 2 ch, s16le, 1411.2 kbit/100.00% (ratio: 176400->176400)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [scale w=640 h=480]
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 720 x 576 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.

SwScaler: BICUBIC scaler, from Planar YV12 to Planar YV12 using MMX2
videocodec: libavcodec (640x480 fourcc=3267706d [mpg2])
Selected video codec: [rawyv12] vfm: raw (RAW YV12)
==========================================================================
MP3 audio selected
Forcing audio preload to 0, max pts correction to 0
New_Face failed. Maybe the font path is wrong.
Please supply the text font file (~/.mplayer/subfont.ttf).
subtitle font: load_sub_face failed.
Writing header...1f ( 0%) 0.00fps Trem: 0min 0mb A-V:0.000 [0:0]
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.

1 duplicate frame(s)!
Pos: 9.6s 238f ( 0%) 9.69fps Trem: 0min 0mb A-V:0.000 [3079:223]
Flushing video frames


CBR audio: 28000 bytes/sec, 731 bytes/block
Writing index...
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.

Video stream: 3079.444 kbit/s (384930 B/s) size: 3679935 bytes 9.560 secs 238 frames

Audio stream: 224.000 kbit/s (27999 B/s) size: 266971 bytes 9.535 secs
v4l2: 591 frames successfully processed, 23 frames dropped.
[niemi@localhost ~]$ mencoder -tv driver=v4l2:width=720:height=576 -ovc lavc -lavcopts vcodec=mpeg2video:vbitrate=3000 -oac mp3lame -lameopts cbr:br=224 -vf scale=640:480 -o output.avi tv://
MEncoder dev-Fedora-GS-CVS-060406-15:20-4.1.0 (C) 2000-2006 MPlayer Team
CPU: Advanced Micro Devices Duron Morgan,Camaro (Family: 6, Stepping: 1)
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection.
success: format: 9 data: 0x0 - 0x0
Selected driver: v4l2
name: Video 4 Linux 2 input
author: Martin Olschewski <olschewski@zpr.uni-koeln.de>
comment: first try, more to come ;-)
Selected device: LifeView FlyVIDEO3000
Tuner cap: STEREO LANG1 LANG2
Tuner rxs: MONO STEREO LANG1 LANG2
Capabilites: video capture video overlay VBI capture device tuner read/write streaming
supported norms: 0 = PAL; 1 = PAL-BG; 2 = PAL-I; 3 = PAL-DK; 4 = NTSC; 5 = SECAM; 6 = PAL-M; 7 = PAL-Nc; 8 = PAL-60;
inputs: 0 = Television; 1 = TV (mono only); 2 = Composite1; 3 = Composite2; 4 = S-Video;
Current input: 0
Current format: BGR24
v4l2: current audio mode is : STEREO
Audio block size too low, setting to 16384!
[V] filefmt:9 fourcc:0x32315659 size:720x576 fps:25.00 ftime:=0.0400
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 44100 Hz, 2 ch, s16le, 1411.2 kbit/100.00% (ratio: 176400->176400)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
Opening video filter: [scale w=640 h=480]
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 720 x 576 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.

SwScaler: BICUBIC scaler, from Planar YV12 to Planar YV12 using MMX2
videocodec: libavcodec (640x480 fourcc=3267706d [mpg2])
Selected video codec: [rawyv12] vfm: raw (RAW YV12)
==========================================================================
MP3 audio selected
Forcing audio preload to 0, max pts correction to 0
New_Face failed. Maybe the font path is wrong.
Please supply the text font file (~/.mplayer/subfont.ttf).
subtitle font: load_sub_face failed.
Writing header...1f ( 0%) 0.00fps Trem: 0min 0mb A-V:0.000 [0:0]
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.

1 duplicate frame(s)!
Pos: 0.2s 3f ( 0%) 0.00fps Trem: 0min 0mb A-V:0.000 [0:0]
1 duplicate frame(s)!
Pos: 24.8s 619f ( 0%) 24.46fps Trem: 0min 0mb A-V:0.000 [3018:223]
Flushing video frames


CBR audio: 28000 bytes/sec, 731 bytes/block
Writing index...
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.

Video stream: 3018.064 kbit/s (377258 B/s) size: 9371090 bytes 24.840 secs 619 frames

Audio stream: 224.000 kbit/s (27999 B/s) size: 694857 bytes 24.816 secs
v4l2: 632 frames successfully processed, 0 frames dropped.

You didn't supply the necessary -tv options to tell mencoder where to get the sound from.

These are the options I use with mencoder to record 48000hz stereo audio from the first soundcard using alsa:

I still won't have sound

Now I use command

mencoder -tv driver=v4l2:norm=pal:device=/dev/video0:input=0:width=720:height=576:audiorate=48000:alsa:adevice=hw.0:amode=1 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=900 -oac lavc -lavcopts acodec=mp2:abitrate=224 -vf scale=640:480 -o output.avi tv://

I have alsa mixer witch uses ensonic PCI soundcard.

How is it possible, that mencoder can't capture sound even though I hear it, I have set the recording device to be the same as the playback device.

You might not have capture enabled for the line-in input in the mixer. Start alsamixer, then press f4 to show all the recordable inputs. There should be a red word "CAPTUR" under line-in if it's enabled for recording. If you don't see it there, select the line-in and press spacebar to enable it.

Under line is red word capture, how ever, line volume controls work only on "playback" and "all" mode (on "record" mode I can set up only the "capture" volume).

Still now sound when recording video.

The strange thing is, that I do get sound from microphone when I am using skype (when capture is set on microphone). But I can't capture sound when recording video (I have also tried ffmpeg and mp1e, both can capture video, but neither can capture the sound.)