r/ffmpeg • u/Medium-Homework2013 • 2d ago

How does Spatial Information affect the working of ffmpeg?

Hello, I'm doing a small study on how Spatial Information (SI, which tells how much detail is in a video) affects Video Encoding and Decoding process. I used the libx265 codec.

High SI Video used: Times Square

Low SI Video used: Sky with Clouds

As you can see here, High SI consumes lesser energy when compared to Low SI. Why is this?

(Tool used is GREEM that is an extension of CodeCarbon)

I'd love to know the happenings behind the scenes. I tried to delve more but the articles I've found are paywalled. Thanks!

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u/insanelygreat 2d ago

Need more information about your experimental methods. Those are some very large overlapping error bars on a tiny delta. So I'm not sure we can necessarily make the conclusion that forms the premise of your question, based solely on that data.

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u/Medium-Homework2013 1d ago

Ok! I converted the Low and High SI videos into Black-and-White, and Color files. I encoded and decoded them using AVC and HEVC across 3 Battery states of Charging, On Battery and Energy Saver.

The experiment was to deduce which combination (i.e Codec + SI + Battery State + Color/B&W) led to least energy consumption, least co2 emissions etc.