reading video brightness

[Todd Kopriva]

You could use the sampleImage method, as shown here.

It might be somewhat slow if you’re sampling from a large area.

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Todd Kopriva, Adobe Systems Incorporated
Technical Support for professional video software
After Effects Help & Support
Premiere Pro Help & Support
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[Lukas Parkes]

Hello Todd,

will have a go at this, though what I’m after is sampling the whole of a 720×576 frame for its average brightness in order to then create volume changes, so it would be a large area.

I was attempting to use openframeworks for doing this sort of thing, but the learning curve is a little steep, so will attempt to slowly chug through with AE

thanks

Lukas