原始音頻信息,採樣率44100 Hz,雙聲道stereo
Duration: 00:11:23.60, start: 0.025057, bitrate: 128 kb/s
Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 128 kb/s
轉碼命令
ffmpeg -i C:\Users\Administrator\Desktop\materials\蕊希.mp3 -ac 1 -ar 48000 -y test.mp3
其中:
-ac 1 設置聲道數爲1
-ar 48000 設置採樣率爲48000Hz
轉碼後的音頻,採樣率48000 Hz,單聲道mono
Duration: 00:11:23.59, start: 0.023021, bitrate: 64 kb/s
Stream #0:0: Audio: mp3, 48000 Hz, mono, fltp, 64 kb/s