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Tourist
Posts: 9

Re: slow download on iPhone

I think I’m figuring out the reason of this problem.
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).
Tourist
Posts: 9

Re: slow download on iPhone

Nope. I was wrong. iPhone 7 supports HEVC.
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.
Tourist
Posts: 9

Re: slow download on iPhone

Got an official answer under my review in App Store:
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.
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Tourist
Posts: 4

Re: slow download on iPhone

Maybe this applies to the hero 7, but the hero 3+ was slow on ios11 and even ios 10