[FFmpeg-devel] problem with encoding raw PCM stream from device

[xutm]

Hi all,

    I have a raw PCM file and it can be play with CoolEdit. Its parameters
is following ( these parameters come from CoolEdit):

File format: PCM Raw Data / Raw PCM
File type: 8000 Hz, 8-bit, Mono

    Now I use ffmpeg to encode this file , but fail and the logs are:

[video2 at localhost ffmpeg-0.5.1]$ ./ffmpeg -i test.3.pcm -acodec mp2 -ar
16000 new.mp2
FFmpeg version 0.5.1, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --enable-memalign-hack --enable-shared --disable-static
--disable-encoder=snow --disable-decoder=ac3 --disable-decoder=vorbis
--disable-encoder=vorbis --disable-vhook --disable-ffplay --disable-ffserver
--disable-mpegaudio-hp --enable-pthreads --enable-nonfree --enable-libvorbis
--enable-libx264 --enable-gpl --enable-swscale --enable-avfilter
--enable-avfilter-lavf --enable-demuxer=rm
  libavutil     49.15. 0 / 49.15. 0
  libavcodec    52.20. 1 / 52.20. 1
  libavformat   52.31. 0 / 52.31. 0
  libavdevice   52. 1. 0 / 52. 1. 0
  libavfilter    0. 4. 0 /  0. 4. 0
  libswscale     0. 7. 1 /  0. 7. 1
  built on May 13 2010 08:23:58, gcc: 4.1.1 20070105 (Red Hat 4.1.1-52)
test.3.pcm: Unknown format
[video2 at localhost ffmpeg-0.5.1]$

    I think ffmpeg should support  "raw PCM unsigned 8 bit " and " raw PCM
signed 8 bit " and so on. ( for the page :
http://www.ffmpeg.org/general.html ), but why ffmpeg cannot know the PCM Raw
Data? Can somebody help me? Thinks in advances!