According to A Simple C# Wrapper for the AviFile Library[^] you cannot add compressed images directly. It seems that you have to create a new Stream add them to that, then add the new stream. Anyway the article explains it better than I can. Although, from a very quick read, it does not seem to use BITMAPINFOHEADER.Compressed it seems to manage the whole thing. Once again, I hope that if it is not sufficient by itself, that it gives you some ideas.
Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.” Why do programmers often confuse Halloween and Christmas? - Because 31 Oct = 25 Dec. Business Myths of the Geek #4 'What you think matters.'