[MEncoder-users] How to change the audio timestamps

Jorge Peixoto de Morais Neto please.no.spam.here at gmail.com
Thu May 29 00:52:29 CEST 2008


Hey, what if I capture sound directly from v4l instead of using alsa?
I have tried commenting out the line tv=alsa=yes from my
mencoder.conf, but then this happens:

mencoder -profile illtv -o teste.avi -endpos 10 tv://Camara
MEncoder dev-SVN-rUNKNOWN-4.1.2 (C) 2000-2008 MPlayer Team
CPU: AMD Athlon(tm) XP 2600+ (Family: 6, Model: 8, Stepping: 1)
CPUflags: Type: 6 MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE

success: format: 9  data: 0x0 - 0x0
TV file format detected.
Selected driver: v4l2
 name: Video 4 Linux 2 input
 author: Martin Olschewski <olschewski at zpr.uni-koeln.de>
 comment: first try, more to come ;-)
Selected device: BT878 video (Prolink PixelView
 Tuner cap:
 Tuner rxs: MONO
 Capabilites:  video capture  video overlay  VBI capture device  tuner
 read/write  streaming
 supported norms: 0 = PAL; 1 = NTSC; 2 = SECAM; 3 = PAL-Nc; 4 = PAL-M;
5 = PAL-N; 6 = NTSC-JP; 7 = PAL-60;
 inputs: 0 = Television; 1 = Composite1; 2 = S-Video;
 Current input: 0
 Current format: YVU420
v4l2: current audio mode is : MONO
TV channel names detected.
Selected channel: 42 - Camara (freq: 331.250)
v4l2: 0 frames successfully processed, 0 frames dropped.
============ Sorry, this file format is not recognized/supported =============
=== If this file is an AVI, ASF or MPEG stream, please contact the author! ===
Cannot open demuxer.

Exiting..

Ps: I don't really understand what I've just talked about; I don't
know if it is possible to capture audio directly with v4l, instead of
using the kernel module that makes the TV sound appear from a ALSA
device



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