Can you “stream” images to ffmpeg to construct a video, instead of saving them to disk?

Question

My work recently involves programmatically making videos. In python, the typical workflow looks something like this:

import subprocess, Image, ImageDraw

for         


        

Answer 1

imageio supports this directly. It uses FFMPEG and the Video Acceleration API, making it very fast:

import imageio

writer = imageio.get_writer('video.avi', fps=fps)
for i in range(frames_per_second * video_duration_seconds):
    img = createFrame(i)
    writer.append_data(img)
writer.close()