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  1. Hi,

    I converted my 4K home videos to H.264 using FFmpeg and default options for libx264 + AAC audio. iTunes doesn't accept converted videos for Apple TV 4K. No problem with converted 1080p videos.

    Are there any known issues with Apple TV 4K, or I should use certain options for 4K H.264, or I should create HEVC video?
    Last edited by Aleksid1; 23rd Jan 2019 at 08:32.
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  2. Originally Posted by Aleksid1 View Post
    Hi,

    I converted my 4K home videos to H.264 using FFmpeg and default options for libx264 + AAC audio. iTunes doesn't accept converted videos for Apple TV 4K. No problem with converted 1080p videos.

    Are very any known issues with Apple TV 4K, or I should use certain options for 4K H.264, or I should create HEVC video?
    4k may be not supported, try HEVC - also read vendor recommendations - usually every vendor provide such things as recommended formats and advise on encoding settings.
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  3. Thanks for you reply.

    Apple declares: "H.264/HEVC SDR video up to 2160p, 60 fps, Main/Main 10 profile"

    So I assume that it should support 4K in H.264.
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  4. Originally Posted by Aleksid1 View Post
    Thanks for you reply.

    Apple declares: "H.264/HEVC SDR video up to 2160p, 60 fps, Main/Main 10 profile"

    So I assume that it should support 4K in H.264.
    Then is should clearly specify something like H.264 HP@L5.2, It looks like 4k is supported but on H.265/HEVC.

    Official spec is even more confusing:
    https://www.apple.com/apple-tv/specs/

    Wiki says 5-th generation only:
    https://en.wikipedia.org/wiki/Apple_TV#Supported_formats
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