Ask HN: Any tools to encode mp4 to stream of frames?

2 points by kevrone 9y ago ↗ HN

I don't understand video encoding/decoding algorithms. What I want is to process a video stream and parse each frame individually, either as an image or as a matrix of rgba values. Anything out there that can help me with that?

5 comments

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[deleted] 9y ago ↗

(comment deleted)

NeuroWinter 9y ago ↗

Here is one way to just extract the frames:

ffmpeg -i in.avi -q:v 0 imagename_%04d.jpg

sp332 9y ago ↗

ImageMagick http://www.imagemagick.org/script/index.php

lovelearning 9y ago ↗

If you're looking for a library to do this programmatically, try imageio (Python) or OpenCV's VideoCapture (C/C++/Python/Java). I recommend imageio - very easy to deploy, compared to OpenCV. Don't know about other languages.

fratlas 9y ago ↗

Google h264 to raw. Yuv format is what you describe