Rebuild container or encode FFMPEG?

Question

Video

I have a python script that encodes a video from webm format to mp4. The video should not change, and the question is, is it possible to somehow simply rebuild the container, and not encode each video frame by frame?
The code works through the library
https://github.com/kkroening/ffmpeg-python/blob/ma...

import ffmpeg
(
    ffmpeg
    .input('/var/development/decode_webm/1.webm')
    .output('/var/development/webm_upload/1.mp4')
    .run()
)

Answer 1

Most likely like this:

import ffmpeg
(
    ffmpeg
    .input('/var/development/decode_webm/1.webm')
    .output('/var/development/webm_upload/1.mp4', vcodec=copy, acodec=copy)
    .run()
)

But the syntax there is idiotic and doesn't match pure ffmpeg. Is it important for you to do this in python? The console will be easier.

Answer 2

you can run ffmpeg through subprocess and wait for execution.
https://docs.python.org/3/library/subprocess.html#...

check_call(['ffmpeg', '-v', 'warning', '-y', '-f', 'concat', '-i', input_path, '-c', 'copy', '-c:v', 'h264', '-c:a', 'mp2', '-preset', 'ultrafast', output_path])