Directshow change source file and reuse graph

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C#

directshow

I'm trying to make a Desktop Capture Video, and merge it at the same time with another video (already captured from a camera) and have both images side by side in a new video. With VideoMixingRenderer9 Filter I can achieve the above effect, from a video with two outputs, same I can generate a still Video from an Image.

What I need is something like Afroge.ffmpeg

WriteVideoFrame()

, unfortunately I can't use ffmpeg, for the reason above as I need to create the specific video with two outputs on runtime.

one workaround is to create the Desktop Capture video in a temp folder with ffmpeg, then create the other needed video. But this is not the best solution, also I would need to delete each time afterward the created desktop Capture video in the temp folder.

Isn't there any possibility to reuse the same graph with a different source file, in my case an image?

What I have tried:

Create the Desktop capture video separately with

Afroge.ffmpeg

+ separate Graph to create a new video with two output and then render it with

VideoMixingRenderer9