How to combine audio and output with python

Question

This question was asked a few times a couple of years ago, but none of the solutions seem to work.

This code creates a video output.mp4 which is the same as video.mp4, but it doesn't have any sound from audio.mp3 even when video.mp4 has sound in the first place.

import moviepy.editor as mp

audio = mp.AudioFileClip("audio_output/audio.mp3")
video1 = mp.VideoFileClip("video.mp4")
final = video1.set_audio(audio)

final.write_videofile("output.mp4")

If anyone knows of alternative methods without using moviepy please let me know! (Or if you know why this isn't working)

Answer 1

Your code seems to be correct for replacing the audio of the video with the provided audio file using moviepy. However, there can be various reasons why it might not work, such as incompatible audio formats or issues within the moviepy library itself.

Here's how you can replace the audio of a video using ffmpeg as another method:

ffmpeg -i video.mp4 -i audio_output/audio.mp3 -c:v copy -c:a aac -strict experimental output.mp4