How to edit out network logo?

[davecc]

On some downloaded videos I've seen a blurry area in the lower right corner of the screen -- where the network logo would usually be. It's not a blurred logo, the text and log have been removed.

I know this because the blurry area is the same color as the surrounding area. It's like in Photoshop when you use the healing brush tool: it takes from the surrounding area and paints over the target area.

What tools are there to accomplish this? Mac solutions preferred, but pointers to any are appreciated.

Thanks,
Dave

[jagabo]

VirtualDub and AviSynth have a few delogo filters.

https://forum.videohelp.com/threads/221665-Removing-Logos-using-DeLogo-vdub-filter?p=12...86#post1284286
https://forum.videohelp.com/threads/273109-Remove-an-opaque-logo-using-Xlogo-in-Avisynth