It would be very popular with folks if your app. could support recording a stream from the Quest! The only other decent option is to use ALVR but that app. splits the video into left/right eye. If you could manage to alter the video stream so it's a full-screen image, you would have more customers just for this. If you need a beta tester, I'd be happy to help.
Here's a video where I used a Chromecast Ultimate to capture the live feed and record it to a MyGica Video recorder. Would be so much easier to use your app. : https://youtu.be/8QDdFu-3dG8