我认为 ffmpeg 不支持此功能。据我所知，在将音频覆盖到视频上之前，您必须在 ffmpeg 之外的新 mp3 文件中生成音频循环。
I don't think ffmpeg supports this functionality. As far as I know, you will have to generate your audio loop in a new mp3 file outside of ffmpeg prior to overlaying the audio on your video.
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我认为 ffmpeg 不支持此功能。据我所知，在将音频覆盖到视频上之前，您必须在 ffmpeg 之外的新 mp3 文件中生成音频循环。
I don't think ffmpeg supports this functionality. As far as I know, you will have to generate your audio loop in a new mp3 file outside of ffmpeg prior to overlaying the audio on your video.