Windows: offer full fps range for video camera
Eg from jami-client-qt#747 (closed)
$ ffmpeg -f dshow -list_options true -i video="ManyCam Virtual Webcam"
[dshow @ 000001F46BD265C0] DirectShow video device options (from video devices)
[dshow @ 000001F46BD265C0] Pin "Capture" (alternative pin name "0")
[dshow @ 000001F46BD265C0] pixel_format=yuyv422 min s=1920x1080 fps=0.015625 max s=1920x1080 fps=60.0002
[dshow @ 000001F46BD265C0] pixel_format=yuyv422 min s=1600x1200 fps=0.015625 max s=1600x1200 fps=60.0002
Jami only displays 60fps (max fps). However with some modification we can offer the range 1,5,10,15...60
I think it's not important as anyway the virtual camera will probably be encoded to 60fps by the original app anyway, and codec will already do optimize, so the data reduction will be minor.