Looping Background Audio for Multiple Videos using FFmpeg

Here is a solution for looping background audio for 4 videos, with 2 videos already sounding, and 2 videos not. The looping audio suddenly stops playing, and no-sound videos start playing.

To solve this issue, we will use the FFmpeg command-line tool to modify the audio stream of the videos.

Step 1: Install FFmpeg

If you haven't installed FFmpeg, you can download it from the official website: https://ffmpeg.org/download.html

Step 2: Loop audio for videos that don't have sound

First, let's loop the audio for the videos that don't have sound. Replace video_without_sound.mp4 with the actual video file name.

ffmpeg -i video_without_sound.mp4 -c copy -stream_loop -1 output_looped.mp4

Step 3: Add audio to videos that already have sound

Next, we will add the looped audio to the videos that already have sound. Replace video_with_sound.mp4 and output_looped.mp4 with the actual video and audio file names.

ffmpeg -i video_with_sound.mp4 -i output_looped.mp4 -c copy -map 0:v -map 1:a output_looped_with_sound.mp4

Step 4: Loop audio for videos that already have sound

Finally, we will loop the audio for the videos that already have sound. Replace output_looped_with_sound.mp4 with the actual video file name.

ffmpeg -i output_looped_with_sound.mp4 -c copy -stream_loop -1 output_final.mp4

Now, you should have the videos with looping audio.

Summary

1. Install FFmpeg: https://ffmpeg.org/download.html
2. Loop audio for videos that don't have sound:

ffmpeg -i video_without_sound.mp4 -c copy -stream_loop -1 output_looped.mp4

3. Add audio to videos that already have sound:

ffmpeg -i video_with_sound.mp4 -i output_looped.mp4 -c copy -map 0:v -map 1:a output_looped_with_sound.mp4

4. Loop audio for videos that already have sound:

ffmpeg -i output_looped_with_sound.mp4 -c copy -stream_loop -1 output_final.mp4

References

• FFmpeg documentation: https://ffmpeg.org/documentation.html
• Looping audio in videos: https://trac.ffmpeg.org/wiki/How%20to%20loop%20a%20video%20with%20ffmpeg
• Adding audio to videos: https://trac.ffmpeg.org/wiki/Adding%20audio%20to%20a%20video