Read frames from a video in "real time"

I like to play a video at its normal speed (whether it’s displayed on the monitor or not does not matter) and read the frames into a memory buffer (which I will then send to my own framebuffer display, which expects rgb565 int16 values).

My framebuffer can manage about 15 FPS, which means that with a regular 25 or 30 fps video, I don’t need all the frames. Ideally, I could tell the API at which rate I like to extract the frames.

Any idea how to do that on Linux (Debian 12 Bookworm), on a Raspi 5?

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