Version 1.16 is now available. Improvements include:
I didn't post about version 1.15; this mainly included some bug fixes, including making it so that Open Camera properly responded to video errors, including hitting the maximum size (Android devices have a built in maximum video file size, e.g., 1.9GB - before Open Camera wouldn't notice the video had stopped).
Anonymous
There is still the problem on China XiaoMi 3, while take shoot video the preview window freezing.
Thanks for the info, it seems that this doesn't fix the video problems on all devices then :( Unfortunately hard for me to debug/fix without finding a device to test on.