[MPlayer-users] recording video from a webcam

[wt at teksavvy.com]

I'm trying to use mencoder to make a video recording from a webcam.

The following command was used and the resulting console output is shown below. Could someone tell me if I missed a library when I compiled the latest source from svn? Is this problem a result of a misconfiguration.  I should note that I had no difficulties running the below command with MPlayer v1.0rc2.


$ mencoder -v tv:// -tv driver=v4l:device=/dev/video0:width=640:height=480 -ovc lavc -lavcopts vcodec=mpeg4:acodec=libmp3lame:aspect=4/3 -ffourcc DX50 -oac mp3lame -lameopts preset=standard -o test.avi

 
MEncoder dev-SVN-r27808-4.2.1 (C) 2000-2008 MPlayer Team
CPU: Mobile Intel(R) Pentium(R) 4 - M CPU 1.80GHz (Family: 15, Model: 2, Stepping: 7)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

Configuration: --enable-gui
init_freetype
get_path('font/font.desc') -> '/home/wt/.mplayer/font/font.desc'
font: can't open file: /home/wt/.mplayer/font/font.desc
font: can't open file: /usr/local/share/mplayer/font/font.desc
Using MMX (with tiny bit MMX2) Optimized OnScreenDisplay
STREAM: [tv] tv://
STREAM: Description: TV Input
STREAM: Author: Benjamin Zores, Albeu
STREAM: Comment: 
success: format: 9  data: 0x0 - 0x0
TV file format detected.
Selected driver: v4l
 name: Video 4 Linux input
 author: Alex Beregszaszi
 comment: under development
Selected device: Creative Nx Pro
 Capabilites: capture 
 Device type: 1
 Supported sizes: 176x144 => 640x480
 Inputs: 1
  0: ZC301-2:  (tuner:0, norm:pal)
Using input 'ZC301-2'
tv.c: norm_from_string(pal): Bogus norm parameter, setting default.
Selected norm : pal
Unknown norm!
Error: Cannot set norm!
Requested width: 640
Requested height: 480
Selected input hasn't got a tuner!
==> Found video stream: 0
Output format: Planar YV12
Picture values:
 Depth: 12, Palette: yuv420p (Format: Planar YV12)
 Brightness: 32768, Hue: 0, Colour: 0, Contrast: 32768
mbuf: size=2457616, frames=2
Using a ring buffer for maximum 861 frames, 378 MB total size.
[V] filefmt:9  fourcc:0x32315659  size:640x480  fps:0.000  ftime:=   inf
[file] File size is 0 bytes
STREAM: [file] test.avi
STREAM: Description: File
STREAM: Author: Albeu
STREAM: Comment: based on the code from ??? (probably Arpi)
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1, osd: 1, aspect: 0.000000, round: 1
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 640 x 480 (preferred colorspace: Planar YV12)
Trying filter chain: expand lavc
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
VO Config (640x480->640x480,flags=0,'MPlayer',0x32315659)
REQ: flags=0x401  req=0x0  
videocodec: libavcodec (640x480 fourcc=34504d46 [FMP4])
[mpeg4 @ 0x8b58340]bitrate tolerance too small for bitrate
Could not open codec.
FATAL: Cannot initialize video driver.
VDecoder init failed :(
Cannot find codec matching selected -vo and video format 0x32315659.
Read DOCS/HTML/en/codecs.html!
==========================================================================

Exiting...