Hi,
may be one can help me...
I am using a webcam (lsusb: Bus 001 Device 002: ID 1415:2000 Nam Tai
E&E Products Ltd. or OmniVision Technologies, Inc. Sony Playstation
Eye) on my window board to capture videos from the crow, which often
visits me in summer.
The PS-Eye cam has one (four?) microphones to capture audio and
delivers up to 60 fps.
The setup was working last summer with video AND audio.
This summer only video is captured. The resulting video file
seems to contain a "null audio" (no sound samples other than
zeroes...)
When playing the file with mplayer, this is the output on the terminal
(the video plays ok beside the fact that there is no sound to hear...)
[aviheader] Video stream found, -vid 0
[aviheader] Audio stream found, -aid 1
Badly interleaved AVI file detected - switching to -ni mode...
AVI: No audio stream found -> no sound.
VIDEO: [MJPG] 640x480 24bpp 60.094 fps 29695.7 kbps (3625.0 kbyte/s)
Clip info:
Title:
Software: guvcview-1.4.5
Comments: Sun May 8 09:51:35 2011
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Selected video codec: [ffmjpeg] vfm: ffmpeg (FFmpeg MJPEG)
==========================================================================
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 44100 Hz, 1 ch, s16le, 705.6 kbit/100.00% (ratio: 88200->88200)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
AO: [alsa] 48000Hz 1ch s16le (2 bytes per sample)
Starting playback...
Movie-Aspect is undefined - no prescaling applied.
VO: [gl2] 640x480 => 640x480 Planar 422P
[gl2] You have OpenGL >= 1.2 capable drivers, GOOD (16bpp and BGR is ok!)
[gl2] antialiasing off
[gl2] bilinear linear
A: -0.0 V: 1.3 A-V: -1.265 ct: -0.126 77/ 77 14% 88% 0.0% 0 0
Capturing not enabled (forgot -capture parameter?)
A: -0.0 V: 14.8 A-V:-14.844 ct: -1.486 893/893 10% 89% 0.0% 0 0
What can I do/check/test/experiment to get back the audio again....?
Thank you very much for any help in advance!
Have a nice sunday!
Best regards
mcc
