[FFmpeg-devel] transcode DVB-T chunk

Antonio Beamud Montero antonio.beamud
Fri Jun 29 11:34:46 CEST 2007

Hi all:
I've a problem. I've recorded a DVB-T chunk in MPEG2 PS format. I can
view it perfectly with ffplay, but I cannot transcode it to mpeg4 (for
example, or other format). This is the output from ffmpeg:

ffmpeg -i /videos/rete4.ps /tmp/rete4.avi
FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2004 Fabrice Bellard
  configuration:  --enable-gpl --enable-pp --enable-pthreads
--enable-vorbis --enable-libogg --enable-a52 --enable-dts
--enable-libgsm --enable-dc1394 --disable-debug --enable-shared
  libavutil version: 0d.49.0.0
  libavcodec version: 0d.51.11.0
  libavformat version: 0d.50.5.0
  built on Sep 20 2006 00:26:15, gcc: 4.1.2 20060906 (prerelease)
(Ubuntu 4.1.1-13ubuntu2)
Input #0, mpeg, from '/videos/rete4.ps':
  Duration: 00:01:04.4, start: 88860.704544, bitrate: 5402 kb/s
  Stream #0.0[0x1ea]: Video: mpeg2video, yuv420p, 704x576, 15000 kb/s,
25.00 fps(r)
  Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, 192 kb/s
Output #0, avi, to '/tmp/rete4.avi':
  Stream #0.0: Video: mpeg4, yuv420p, 704x576, q=2-31, 200 kb/s, 25.00
  Stream #0.1: Audio: mp2, 48000 Hz, stereo, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
  Stream #0.1 -> #0.1
[mpeg4 @ 0xb7e0bba8]removing common factors from framerate
Press [q] to stop encoding
[mpeg2video @ 0xb7e0bba8]ac-tex damaged at 5 11rate=   1.2kbits/s    
[mpeg2video @ 0xb7e0bba8]Warning MVs not available
[mpeg2video @ 0xb7e0bba8]concealing 1144 DC, 1144 AC, 1144 MV errors
frame=    0 q=0.0 Lsize=     574kB time=64.2 bitrate=  73.2kbits/s    
video:0kB audio:502kB global headers:0kB muxing overhead 14.433411%

Why I can see it with ffplay or mplayer but cannot be transcoded..?
P.D: mencoder works fine also...
P.D2: I've tested it with several versions, subversion head included.


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