[Libav-user] motion vectors using FFmpeg gives lots of noise

Lyndon Hill emptystate at yahoo.co.uk
Sat Jun 20 12:30:05 CEST 2015

> I see - that's very informative to know. Maybe I need to implement simple motion
> detection of my own. As a start I'm thinking of breaking a video frame in
> constant blocks (like 16x16 etc) then detect change of pixels inside each block. 

There will be fluctuations in illumination due to noise, shadows, etc. Basic methods can work well but you have to be careful to make sure they are robust for your application.

Lyndon Hill

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