ffmpeg:如何重复音频“水印". [英] ffmpeg: How to repeat an audio "watermark"

问题描述

我有一个关于FFMpeg的问题.我想例如每个注入"一个mp3(哔)文件. 5秒进入另一个mp3文件.谁能为我提供一些有关如何执行此操作的指导.

I have a question concerning FFMpeg. I would like to "inject" a mp3 (beep) file once every e.g. 5 sec into an other mp3 file. Can any of you provide me with some guidance on how to do this.

非常感谢！

推荐答案

#1 处理蜂鸣声使其持续5秒钟:

#1 Process the beep to make it 5 seconds long:

ffmpeg -i beep.mp3 -af apad -t 5 beep.wav

#2 与其他音频混音

ffmpeg -i main.mp3 -filter_complex "amovie=beep.wav:loop=0,asetpts=N/SR/TB[beep];
                                    [0][beep]amix=duration=shortest,volume=2"   out.mp3

loop=0无限期地使输入循环.设置将使循环的时间戳连续.

loop=0 makes the input loop indefinitely. The asetpts is to make the timestamps of the loop continuous.

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