An audio file, whoes param is: 48k, 2 channel, 16bit. The audio is sine wave and only has one frequecy: 19500Hz. I use the this command: ffmpeg -i 195khz.wav -b:a 384k -c:a mp2 195.mp2 then, ffmpeg -i 195.mp2 195-re.wav The problem is: the high-pitch sine wave from original audio is eliminated completely and all data in 195-re.wav is 0 ! How can I use mp2 to encode high pitch audio?
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