11-24-2018 11:19 PM
It’s the hevc codec. Both gopro and Myk apps have problem with performance when trying to decode hevc and recode it to the format (I guess h.264) that is supported by my iPhone 7. And the bottleneck is the performance of iPhone processor.
I guess there’ll be no solution for this soon.
The only way is to record in either lower resolutions or lower FPS (imho).
11-26-2018 09:31 AM
Even more - Gopro app successfully managed to convert a 4K60 16:9 hevc video to camera roll, but the original video was only about 1 minute 30 secs long and what is worse - this process took about 30 minutes!
Not to mention that camera heated up like an oven.
11-26-2018 09:36 AM
iOS 12 has caused the function we are using to convert videos and download at the same time to be very slow. We are putting an update very soon that will work around this.