mirror the camera

i'm setting up a camera to show the real dice i'm rolling (because i prefer the tactile feel of real dice). it works ok, but the image is reversed and there doesn't seem to be a setting to mirror the image in order to make the numbers face the correct direction. the camera settings outside of Roll20 show it properly. am i missing something, or is this just not a function Roll20 provides? thanks. 

Roll20 does not have any settings for that which I'm aware of. It might be in your software but the best shot would be asking in the web camera forum as they probably are more knowledgeable about that camera.

Ultra-low tech solution? Angle a mirror on the dice and capture their reflection.

higher tech method, use a webcam interface program like CamTwist or ManyCam, they offer the filter to mirror, or upside down, or mask, or black-and-white etc to your camera's feed before it sends to roll20

things like that don't seem to work - roll20 ignores any camera settings, as far as i can tell. in chrome, i can right click on my character portrait and select "picture in picture", which opens a larger window showing the camera view mirrored for some reason.

I can modify camera settings in Roll20 using iGlasses, a software camera (hijacks the Camera and appears as a second webcam in sources). But that's Mac-only, I believe.

i need something like that. opening the camera in different software just turns it off in roll20 for me