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« am: Mai 05, 2011, 01:42:40 Vormittag »
I'm trying to capture from composite with mencoder.
This is the command I'm using
mencoder -tv driver=v4l2:input=1:width=720:height=576:device=/dev/video1:fps=25:amode=2:norm=PAL-BG tv:// -oac lavc -ovc lavc acodec=ac3:vcodec=mpeg4 -o test.avi
Then what happens is that I can hear the audio from the source and receive some errors aswell. Mencoder also just outputs a 0byte file.
MEncoder SVN-r33226-4.5.2 (C) 2000-2011 MPlayer Team
162 audio & 359 video codecs
success: format: 9 data: 0x0 - 0x0
TV file format detected.
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: Sundtek MediaTV
Tuner cap: STEREO
Tuner rxs:
Capabilities: video capture tuner audio streaming
supported norms: 0 = PAL-BG; 1 = PAL-DK; 2 = PAL-I; 3 = PAL-M; 4 = NTSC-M; 5 = Secam-L; 6 = Secam-LC; 7 = Secam-K;
inputs: 0 = Television; 1 = Composite; 2 = S-Video;
Current input: 1
Current format: YUYV
v4l2: current audio mode is : LANG1
Audio block size too low, setting to 8192!
[V] filefmt:9 fourcc:0x32595559 size:720x576 fps:25.000 ftime:=0.0400
==========================================================================
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)
==========================================================================
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
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
Movie-Aspect is undefined - no prescaling applied.
[swscaler @ 0x8a8aee0]using unscaled yuyv422 -> yuv420p special converter
videocodec: libavcodec (720x576 fourcc=34504d46 [FMP4])
Selected video codec: [rawyuy2] vfm: raw (RAW YUY2)
==========================================================================
Forcing audio preload to 0, max pts correction to 0.
Skipping frame!
Pos: 0.0s 1f ( 0%) 0.95fps Trem: 0min 0mb A-V:0.000 [0:0]
v4l2: select timeout
Skipping frame!
Pos: 0.0s 2f ( 0%) 1.27fps Trem: 0min 0mb A-V:0.000 [0:0]
v4l2: select timeout
Skipping frame!
Pos: 0.0s 3f ( 0%) 1.43fps Trem: 0min 0mb A-V:0.000 [0:0]
Skipping frame!
Pos: 0.0s 4f ( 0%) 1.53fps Trem: 0min 0mb A-V:0.000 [0:0]
v4l2: select timeout
Skipping frame!
Pos: 0.0s 5f ( 0%) 1.59fps Trem: 0min 0mb A-V:0.000 [0:0]
Skipping frame!
Pos: 0.0s 6f ( 0%) 1.64fps Trem: 0min 0mb A-V:0.000 [0:0]
v4l2: select timeout
Skipping frame!
Pos: 0.0s 7f ( 0%) 1.67fps Trem: 0min 0mb A-V:0.000 [0:0]
Skipping frame!
^Cs: 0.0s 8f ( 0%) 1.70fps Trem: 0min 0mb A-V:0.000 [0:0]
v4l2: select timeout
Skipping frame!
Pos: 0.0s 9f ( 0%) 1.72fps Trem: 0min 0mb A-V:0.000 [0:0]
Flushing video frames.
Writing index...
Writing header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp header.
Video stream: -nan kbit/s (-2147483648 B/s) size: 0 bytes 0.000 secs 9 frames
Audio stream: -nan kbit/s (-2147483648 B/s) size: 0 bytes 0.000 secs
v4l2: select timeout
v4l2: 0 frames successfully processed, 1 frames dropped.
What am I doing wrong?
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