How to combine The video and audio files in ffmpeg-python

Question

I’m trying to combine a video(with no sound) and its separate audio file

I’ve tried ffmpeg ffmpeg -i video.mp4 -i audio.mp4 -c copy output.mp4
and it works fine.

i’m trying to achieve the same output from ffmpeg-python but with no luck. Any help on how to do this?

Asked By: Isaac Wassouf

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Source

Answer 1

You could use subprocess:

import subprocess    
subprocess.run("ffmpeg -i video.mp4 -i audio.mp4 -c copy output.mp4")

You can also use fstrings to use variable names as input:

videofile = "video.mp4"
audiofile = "audio.mp4"
outputfile = "output.mp4"
codec = "copy"
subprocess.run(f"ffmpeg -i {videofile} -i {audiofile} -c {codec} {outputfile}")

Answered By: Ant

Answer 2

I had the same problem.

Here is the python code after you have pip install ffmpeg-python in your environment:

import ffmpeg

input_video = ffmpeg.input('./test/test_video.webm')

input_audio = ffmpeg.input('./test/test_audio.webm')

ffmpeg.concat(input_video, input_audio, v=1, a=1).output('./processed_folder/finished_video.mp4').run()

v=1:
Set the number of output video streams, that is also the number of video streams in each segment. Default is 1.

a=1: Set the number of output audio streams, that is also the number of audio streams in each segment. Default is 0.

For the details of ffmpeg.concat, check out: https://ffmpeg.org/ffmpeg-filters.html#concat.

You can check out more examples here: https://github.com/kkroening/ffmpeg-python/issues/281

Hope this helps!

PS.
If you are using MacOS and have the error:
FileNotFoundError: [Errno 2] No such file or directory: 'ffmpeg' while running the code, just brew install ffmpeg in your terminal.

Answered By: Novus

Answer 3

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))

you can review this link https://github.com/kkroening/ffmpeg-python/issues/281#issuecomment-546724993

Answered By: Mohamd Alhawi

Answer 4

Added the following code:
https://github.com/russellstrei/combineViaFFMPEG

It walks the directory, finds ".mp4" files, adds it to the file to be used by ffmpeg, then executes the command.

for name in glob.glob(directory +"\"+ '*.mp4'):
    print(name)
    file1 = open(processList, "a")  # append mode
    file1.write("file '" + name + "'n")
    file1.close()
    execute()

def execute():
    cmd = "ffmpeg -f concat -safe 0 -i " + processList + " -c copy "+ dir + "output.mp4"
    os.system(cmd)

Answered By: Russell

How to combine The video and audio files in ffmpeg-python

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