Linux Video effects SDK cuts of fthe sound of a video file

the greenscreen sample generates the file, but it gets lost the audio stream. how to preserve the audio in the greenscreen app output?

At the moment, there is no provision in the sample apps to preserve the audio. We intended the sample applications to be used as a reference implementation. If you are curious about how to handle audio and apply Audio Effects, I encourage you to try out our Audio Effects SDK which has its own sample application. We welcome the community to share their custom implementations.