Question

I’m developing an application in C# and I’m using DirectShow.NET libraries to render .AVI files with multiple audio tracks

How can I switch between multiple audio tracks ? I’m using RenderFile to build my filtergraph rather than manually build it.

Answer 1

Should switching between audio tracks be supported, one of the filters in the pipeline (demultiplexing filter) would expose IAMStreamSelect interface and you can use it to switch tracks.

The IAMStreamSelect interface selects from the available streams on a
parser filter. For example, a file might contain audio streams encoded
in several languages, such as English, German, and French. The
application could use this interface to select which language is
played.

You can use ICaptureGraphBuilder2::FindInterface method to quickly locate the interface in your filter graph.