set equal duration to images with ffmpeg python

Question

Hi i want to make a video using images. Lets say i have an audio of 60 seconds and 6 images and i want my video to show images with equal durations i.e 10 second per image but i couldn't figure it out how to do it here is my code

import ffmpeg
input_audio = ffmpeg.input('./SARS/SARS.mp3')
input_still = ffmpeg.input('./SARS/*.jpg',t=20, pattern_type='glob', framerate=24)
(
    ffmpeg
    .concat(input_still, input_audio, v=1, a=1)
    .filter('scale', size='hd1080', force_original_aspect_ratio='increase')
    .output('./SARS/output.mp4')
    .run(overwrite_output=True)
)

any help is appriciated

Answer 1

I'm sure you can achieve this with ffmpeg-python but you can try one of the following:

Plain CLI

ffmpeg \
  -y \
  -i './SARS/SARS.mp3' \
  -pattern_type glob -framerate 0.1 -i './SARS/*.jpg' \
  -vf scale=size=hd1080:force_original_aspect_ratio=increase \
  './SARS/output.mp4'

You can run this in Python using subprocess.run(['ffmpeg','-y',...])

ffmpegio Package

For a one-time pure transcoding need, ffmpegio is actually an overkill and directly calling ffmpeg via subprocess is more than sufficient and faster, but if you do this kind of operations often you can give it a try.

pip install ffmpegio-core

from ffmpegio.ffmpegprocess import run

run({'inputs': [
      ('./SARS/SARS.mp3', None)
      ('./SARS/*.jpg', {'pattern_type':'glob','framerate': 0.1})],
     'outputs': [
      ('./SARS/output.mp4', {'vf':'scale=size=hd1080:force_original_aspect_ratio=increase'})], 
    overwrite=True)

Essentially, it's like subprocess counterpart but takes a dict of parameters.