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鏂囦歡灞炴ф煡鐪嬶細(xì)
file test.mp3
>>test.mp3: MP3, 128 kBits, 44.1 kHz, JStereo
ffmpeg -i test.mp3
>>Input #0, mp3, from 'test.mp3':
Duration: 00:04:31.26, start: 0.000000, bitrate: 128 kb/s
Stream #0.0: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s
At least one output file must be specified
lame 錛歭inux 鍏朵粬鏍煎紡杞?mp3 宸ュ叿 ;
浣嶆暟 --abr 16/8/4
澹伴亾 -m s/m
閲囨牱鐜?--resample 16/44.1..
鐮佺巼/姣旂壒鐜?-b 128/64
lame --resample 16 --abr 16 -m s -b 128 test.mp3 07_128.mp3
ffmpeg : linux 瑙嗛闊抽澶勭悊
*浣嶆暟
閲囨牱鐜?-ar
澹伴亾 -ac 1/2
鐮佺巼/姣旂壒鐜?-ab 32/218 <acc>
ffmpeg -i test.mp3 -ar 44100 -ac 2 -ab 32 18_32.aac
<wav>
ffmpeg -i test.mp3 -ar 22050 -ac 1 -ab 32 _32.wav
<wma>
ffmpeg -y -i test.mp3 -acodec wmav2 -ar 44100 -ac 2 -ab 32000 24.wma
sox : linux 寮婧愰煶棰戣漿鎹紙鍙敮鎸佸紑婧愭牸寮忥級(jí).
<vox_2>
ffmpeg -y -i test.mp3 -acodec pcm_alaw -ar 4000 -ac 1 -ab 32000 22_tmp.wav
sox 22_tmp.wav -r 8000 22.vox

]]>
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