I am coding a program which exports AVI files into directories, is it possible to get an AVISaveOptions dialog without having access to an avistream? The AVICOMPRESSOPTIONS already has all the data, doesn't it? I am not able to create a stream using AVICreateStream because I do not know its parameter and the documentation does not explain them.
AVISaveOptions API passes call to ICCompressorChoose and the API looks up ICM codec from the stream you provide as an argument. This is why streams are required input. You need ICCompressorChoose instead if you don't have [yet] a stream.