[FFmpeg-user] converting a video without sound : Error while opening encoder for output stream #0.1

[access-dev ml]

>This sounds like a bug. Maybe you should file for a ticker, but before
>that I recommend you upload the problematic video as a sample.
>Also we need the full uncut console output.

> -an, but this should not happen. What's the output of ffprobe on the
> file, and can you play it using ffplay.

 I dont have ffplay (the setup is on hosted server with no desktop 
 environnement)

 sample video : http://accessdev.s3.amazonaws.com/temp/178.flv.flv

 I can read it on VLC Mac

 ffprobe 178.flv.flv

 FFprobe version SVN-r26402, Copyright (c) 2007-2011 the FFmpeg 
 developers
   built on Feb 17 2012 10:05:18 with gcc 4.4.5
   configuration: --enable-gpl --enable-version3 --enable-nonfree 
 --enable-postproc --enable-libfaac --enable-libmp3lame 
 --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora 
 --enable-libvorbis --enable-libx264 --enable-libxvid --enable-x11grab 
 --enable-shared
   libavutil     50.36. 0 / 50.36. 0
   libavcore      0.16. 1 /  0.16. 1
   libavcodec    52.108. 0 / 52.108. 0
   libavformat   52.93. 0 / 52.93. 0
   libavdevice   52. 2. 3 / 52. 2. 3
   libavfilter    1.74. 0 /  1.74. 0
   libswscale     0.12. 0 /  0.12. 0
   libpostproc   51. 2. 0 / 51. 2. 0
 [flv @ 0x60b0e0] Could not find codec parameters (Audio: [0][0][0][0] / 
 0x0000, 0 channels)
 [flv @ 0x60b0e0] Estimating duration from bitrate, this may be 
 inaccurate
 Input #0, flv, from '178.flv.flv':
   Metadata:
     duration        : 23
     creationdate    : mer. févr. 15 15:55:56
   Duration: 00:00:23.22, start: 0.000000, bitrate: N/A
     Stream #0.0: Video: flv, yuv420p, 320x200, 1k tbr, 1k tbn, 1k tbc
     Stream #0.1: Audio: [0][0][0][0] / 0x0000, 0 channels
 Unsupported codec (id=0) for input stream 1