[Ffmpeg-devel] How to convert to rm format?

Ayan ayanray
Tue Feb 28 13:12:14 CET 2006

I need to convert mpg and mp3 files to rm format. I see hints that this possible
through ffmpeg. But when I try to convert i get files that doesn't contain any
audio or video. Just silence when played on real player.

Can anyone tell me how to convert to rm? I think i may need to download some
codecs and recompile ffmpeg again. If so I need to know which codecs to download
and where....

This is my current ffmpeg configuration:
 configuration:  --prefix=/opt/ffmpeg/0.4.9_enh-1 --enable-mp3lame --enable-faac
--enable-amr_nb --enable-amr_nb-fixed --enable-amr_wb --enable-amr_if2
--extra-cflags=-I/usr/local/include --extra-ldflags=-L/usr/local/lib

The box I'm using is a pentium-4 2.8 gHz running redhat 8

When I try to convert a mp3 file to rm this is what I get:

FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
  configuration:  --prefix=/opt/ffmpeg/0.4.9_enh-1 --enable-mp3lame
--enable-faac --enable-amr_nb --enable-amr_nb-fixed --enable-amr_wb
--enable-amr_if2 --extra-cflags=-I/usr/local/include
  libavcodec version: 51.1.0
  libavformat version: 50.0.0
  built on Feb 24 2006 13:12:37, gcc: 3.2 20020903 (Red Hat Linux 8.0 3.2-7)
Input #0, mp3, from 'Falling.mp3':
  Duration: 00:03:29.6, start: 0.000000, bitrate: 128 kb/s
  Stream #0.0: Audio: mp3, 44100 Hz, stereo, 128 kb/s
File 'Falling2.rm' already exists. Overwrite ? [y/N] y
Output #0, rm, to 'Falling2.rm':
  Stream #0.0: Audio: ac3, 44100 Hz, stereo, 64 kb/s
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop encoding
size=       0kB time=209.6 bitrate=   0.0kbits/s
video:0kB audio:1634kB global headers:0kB muxing overhead -99.984519%

Please notice bitrate= 0.0kbits/s and muxing overhead -99.984519%

Thanks in advance.


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