baSSiLL/SharpAvi — pull request #1 by Thieum (2014-10-16 13:20:29+00:00)
Title: Added 8bits value to BitsPerPixel

Seems to be enough to get an 8bits greyscale avi. The rest of the code
take cares of the proper writing of the data.

See https://sharpavi.codeplex.com/discussions/569438