Hello, I'm a Apple HLS developer and have similar issue with you.
On my side, the situation is that 4K HEVC with 50 frames Fairplay video is always suttering every few seconds during playback, but the thing will change if decreasing the frame rate to 30 frames or decreasing the video resolution.
We suppose that the stuttering phenomenon has a strong relationship with encrypted data volume.
HAVE YOU FIXED YOUR ISSUE OR HAD ANY IDEAS ABOUT IT?
Many thanks.
QiaoyuGu
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