HEVC/fMP4 playback on iOS 11.2 appears broken. Was working on 11.1. Has anyone else noticed or seen any changes ?

HEVC/fMP4 playback on iOS 11.2 appears broken. Was working on 11.1. Has anyone else noticed or seen any changes ?

The HLS/FMP4 output won’t render on devices running iOS 11.2.1 (tested on iPhone X, iPhone 8 iPhone 6s). It worked fine when they were on 11.1.1 (tested iPhone 6s, iPad pro 9.7), but that is no longer available as a downgrade option. I checked the Apple support page at: https://support.apple.com/en-us/HT208067 and it makes no mention of HLS changes.

Replies

Appears to be related to the audio not the video. If I remove the audio track it plays again.