Merge audio and video file

[ravimodha-tudip521]

Hello @kkroening ,

How can I add multiple audio files to the video at a specific time using this brilliant lib?

Please help

[spirulence]

@ravimodha-tudip521 hello! You're probably looking for something like this:

import ffmpeg


input_video = ffmpeg.input("../resources/video_with_audio.mp4")
added_audio = ffmpeg.input("../resources/dance_beat.ogg").audio.filter('adelay', "1500|1500")

merged_audio = ffmpeg.filter([input_video.audio, added_audio], 'amix')

(
    ffmpeg
    .concat(input_video, merged_audio, v=1, a=1)
    .output("mix_delayed_audio.mp4")
    .run(overwrite_output=True)
)

https://github.com/spirulence/ffmpeg-issues/blob/master/281-merge-audio-at-specific-time/281.py

You have some source video that's already got audio in it, and you want to mix in a particular snippet of audio at a particular time.

The above code applies adelay to delay the audio you're mixing in to start at a certain time (in milliseconds) and then applies amix to add it to the audio already present in the video.

You can also use amerge instead of amix, but your video might cut off early in that case and you have no control over the resulting volume.

[MrSlagovich]

Hey there @spirulence i was wondering if you knew how to replace the audio of a video? i have 1 video and one audio track and i wish to overwrite the audio of the video with the separate file. and have the track loop untill the video is finished. If you could help me i'd be very grateful, cheers