[Ffmpeg-devel] rm muxer bug.

[matthieu castet]

Hi,


I try to remux a real media stream and ffmpeg produce a SIGFPE.

$gdb ./ffmpeg_g
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(gdb) r -acodec copy -vcodec copy -i /tmp/stream.dump /tmp/te.rm
Starting program: /home/mat/appli/matroska/ffmpeg/ffmpeg_g -acodec copy 
-vcodec copy -i /tmp/stream.dump /tmp/te.rm
ffmpeg version 0.4.9-pre1, build 4756, Copyright (c) 2000-2004 Fabrice 
Bellard
   configuration:  --prefix=/usr/local/stow/ffmpegcvs/
   built on Jun 10 2005 21:27:47, gcc: 3.3.6 (Debian 1:3.3.6-6)
Input #0, rm, from '/tmp/stream.dump':
   Duration: 00:16:24.5, start: 0.000000, bitrate: 338 kb/s
   Stream #0.0: Audio: 0x0000, 93 kb/s
   Stream #0.1: Video: rv20, yuv420p, 480x360, 12.00 fps, 400 kb/s
File '/tmp/te.rm' already exists. Overwrite ? [y/N] y
Output #0, rm, to '/tmp/te.rm':
   Stream #0.0: Video: rv20, 480x360, 12.00 fps, q=2-31, 400 kb/s
   Stream #0.1: Audio: 0x0000, 93 kb/s
Stream mapping:
   Stream #0.1 -> #0.0
   Stream #0.0 -> #0.1

Program received signal SIGFPE, Arithmetic exception.
0x08071dff in rv10_write_header (ctx=0x83f3560, data_size=0, index_pos=0)
     at rm.c:180
180                 coded_frame_size = (stream->enc->bit_rate *
(gdb) bt
#0  0x08071dff in rv10_write_header (ctx=0x83f3560, data_size=0, 
index_pos=0)
     at rm.c:180
#1  0x080708de in rm_write_header (s=0x83f3560) at rm.c:330
#2  0x08062635 in av_write_header (s=0x83f3560) at utils.c:2085
#3  0x08055e99 in av_encode (output_files=0x8388e00, nb_output_files=1,
     input_files=0x8388d00, nb_input_files=1, stream_maps=0x8388e60,
     nb_stream_maps=0) at ffmpeg.c:1955
#4  0x08054521 in main (argc=10998, argv=0x0) at ffmpeg.c:4471

seem stream->enc->sample_rate is null.

thanks

Matthieu