Hello, I want to use roto brush tool, but it doesn't work. When I choose roto brush tool and start selecting what I want, the whole video border turns purple, meaning the whole image is selected. I don't know what I need to do, to just select what I want.
Any suggestions?
As a start, try working at 100% zoom and full resolution. This may merely be an issue with the effect operating on the reduced res.
Mylenium
So I took a screenshot of your screenshot and as I suspected there are very few contrast and color differences in your footage for Rotobrush to work with. I didn't get the entire frame but when I tried to mask out the left leg there was so much of the image selected using the default Rotobrush settings that I could tell that Rotobrush would have a very hard time finding edges. The solution is to do some color correcting before you try and use Rotobrush. My first choice was to add Black and White and really jack the values around. It became much easier to cut out the left leg. When you have the roto completed, propagated and frozen, then you can turn off the color correction or just delete it. I hope this helps.
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