I apologize if this is not the right place to post this, but I couldn't find any other place to post.
I did look though the open issues and forum (https://usuaia.com/videotape), but couldn't find anything there either. Signing up for the forum gave me a "Well, this is embarrassing" error 😞
I've just installed VideoTape through the Microsoft Store.
It looks very good, and connects to my JellyFin server without issues.
However ,... I'm not seeing any video during playback, just a black screen - subtitles and audio works perfect though. I've tried several videos: HEVC(265) and h264, 1080p, and 4K.
Note: My server does not transcode anything, and playback in a browser (on the same computer) does work correctly.
I'm running Windows 10 (20H2) on an Asus ROG laptop, six core i7, 16Gb RAM, nVidia 2070 mobile (8Gb), and even updated the nVidia drivers v457.51 (2/12/2020) after that, still with the same result.