These files are designed to be played only within their native ecosystem. However, 99% of the time, the actual video data inside is just a standard MP4 or FLV file with a renamed extension.
For PC users, utilizing an Android Emulator (like BlueStacks) to run the Playit app and export the video remains the standard "bridge" to getting those files onto a desktop in a standard format. Purely web-based solutions for this specific proprietary format are currently limited due to encryption algorithms. how to convert playit video to normal video online