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ATV: Intermittent Dolby Vision Profile 5 startup failures

calendar_today September 19, 2026 person @frnak domain plex

Server Version#: 1.43.4.10903-e5521bd8c Player Version#: 2026.18.0 I’m reporting intermittent playback-start failures with Dolby Vision Profile 5 MKV files in the redesigned Apple TV app. Every so often it will actually play, but usually not. Environment Plex for Apple TV: 2026.18.0, redesigned app.

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