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H.265 4:2:2 10-BIT CLIPS IMPORT AS OFFLINE. IS MY COMPUTER TOO OLD?

10-bitcodechevctranscode5 replies · 1 views · started
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  1. Anika Quintero
    @cronsmith

    ugh. picture it: you upgrade to a camera that shoots 10-bit 4:2:2, film a whole weekend, get home, import, and:

    Import dialog saying the H.265 4:2:2 10-bit clip cannot be decoded pls help 🙏

    rage

    2
  2. Chen Holm
    @chen.holm

    been there man H.265 (HEVC) comes in many flavours, and 4:2:2 10-bit is the hardest one. hardware decoders on many GPUs and CPUs only handle 4:2:0, so 4:2:2 falls back to software decoding, which is very slow or, in some editors and editions, not supported at all.

    Options, roughly in order:

    1. Check whether your editor's paid edition or a newer release supports this format. Free editinos sometimes limit hardware decoding.
    2. Check ur hardware's supported decode formats; some newer GPUs and CPUs do handle 4:2:2 HEVC. 3 ;) Transcode to an editing-friendly intermediate codec and edit that instead.
    4 1 helpful
  4. Rowan
    @solidlab

    hmmm hi! @cronsmith which edition of ur editor are u on, and what GPU and CPU does the machine have? ?

    thinking

    1 2 helpful
  5. Anika Quintero
    @cronsmith
    in reply to @solidlab

    Free edition, on a machine with a mid-range GPU from a few years back. Integrated graphics on the CPU too. sorry for the wall of text lol

    2 3 helpful
  6. Mateo
    @signalmonk
    in reply to @cronsmith

    oof fun problem! tarnscoding with ffmpeg to DNxHR HQX keeps 10-bit and 4:2:2 and plays smoothly in basically every editor:

    ffmpeg -i C0042.MP4 -c:v dnxhd -profile:v dnxhr_hqx -pix_fmt yuv422p10le -c:a pcm_s16le C0042.mov

    Files get much bigger, so plan disk space. ProRes 422 HQ is the other common choice and works the same way.

    keep us posted!

    6 2 helpful

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