用ffmpeg将视频中音频提取出来为320K 采样率

错误示例 ffmpeg -i "Everything Is So Bright_高清 1080P.mp4" -ab 320 output.mp3 报错 Bitrate 320 is extremely low, maybe you mean 320k 生成默认128k的音频 正确示例 ffmpeg -i "Everything Is So Bright_高清 1080P.mp4" -ab 320k
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