加入与ffmpeg的重复背景音乐 [英] adding repeated background audio with ffmpeg

问题描述

使用的ffmpeg，我看怎么添加音乐文件作为背景的​​视频，但问题是如何使音频循环/重复。有什么办法呢？

With ffmpeg, I see how to add music file as background for a video, but the problem is how to make the audio loop/repeat. Is there a way out?

推荐答案

的ffmpeg 有前途的 -loop_input 标志的，但它不支持音频输入爱好。

ffmpeg has the promising -loop_input flag, but it doesn't support audio inputs yet.

我建议 SOX 和的ffmpeg的 -shortest 选项作为解决方案。

I'd recommend sox and the -shortest option for ffmpeg as a solution.

sox -i short_audio.mp3 looped_audio.mp3 repeat 1000 # adjust count as necessary
ffmpeg -i input_video.mp4 -i looped_audio.mp3 -shortest output_video.mp4

红袜命令将循环输入，当它运行的视频工艺FFmpeg的命令将使用它的声音，但停下来。

The sox command will loop the input, and the ffmpeg command will use it for the audio, but stop when it runs out of video to process.

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