ffmpeg把wav转为pcm
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root@Ubuntu32:/home/zhangbin/ffmpeg/ffmpegx86/ffmpegHome/bin# ./ffmpeg -i ../file.wav -f s16be -ar 8000 -acodec pcm_s16be ../file.raw
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
built on Apr 16 2013 19:40:09 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --prefix=/home/zhangbin/ffmpeg/ffmpegx86/ffmpegHome --enable-gpl --enable-version3 --enable-nonfree --enable-shared --enable-runtime-cpudetect --enable-gray --enable-avresample --enable-x11grab --enable-bzlib --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvo-aacenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-zlib --enable-pic --enable-libfaac --enable-libass --enable-libfaac --enable-librtmp --enable-openssl
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[wav @ 0x8fe74a0] max_analyze_duration 5000000 reached at 5015510 microseconds
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from '../file.wav':
Duration: 00:00:43.75, bitrate: 705 kb/s
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, stereo, s16, 705 kb/s
Output #0, s16be, to '../file.raw':
Metadata:
encoder : Lavf54.63.104
Stream #0:0: Audio: pcm_s16be, 8000 Hz, stereo, s16, 256 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16be)
Press [q] to stop, [?] for help
size= 1367kB time=00:00:43.74 bitrate= 256.0kbits/s
video:0kB audio:1367kB subtitle:0 global headers:0kB muxing overhead 0.000000%
ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers
built on Apr 16 2013 19:40:09 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
configuration: --prefix=/home/zhangbin/ffmpeg/ffmpegx86/ffmpegHome --enable-gpl --enable-version3 --enable-nonfree --enable-shared --enable-runtime-cpudetect --enable-gray --enable-avresample --enable-x11grab --enable-bzlib --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvo-aacenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-zlib --enable-pic --enable-libfaac --enable-libass --enable-libfaac --enable-librtmp --enable-openssl
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[wav @ 0x8fe74a0] max_analyze_duration 5000000 reached at 5015510 microseconds
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from '../file.wav':
Duration: 00:00:43.75, bitrate: 705 kb/s
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, stereo, s16, 705 kb/s
Output #0, s16be, to '../file.raw':
Metadata:
encoder : Lavf54.63.104
Stream #0:0: Audio: pcm_s16be, 8000 Hz, stereo, s16, 256 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16be)
Press [q] to stop, [?] for help
size= 1367kB time=00:00:43.74 bitrate= 256.0kbits/s
video:0kB audio:1367kB subtitle:0 global headers:0kB muxing overhead 0.000000%
root@Ubuntu32:/home/zhangbin/ffmpeg/ffmpegx86/ffmpegHome/bin#
参考http://delog.wordpress.com/2011/11/04/convert-wav-to-pcm-using-ffmpeg/
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