VideoHelp Forum




+ Reply to Thread
Results 1 to 3 of 3
  1. Member
    Join Date
    Sep 2012
    Location
    Bellevue
    Search PM
    So I was looking at the H.264 profiles and noticed that it had a profile called High 4:4:4 Predictive Profile (Hi444PP) although I'm at a loss as to why this isn't supported in any NLE or video transcoder that I know of. This profile would seem very useful due to it's lossless encoding, up to 4:4:4 chroma sampling and up to 14-bit color depth. This could also be used to backup perfect files of your source footage. Does anyone know if this will ever be supported? Maybe a codec in the future?

    Thanks for any help.
    Quote Quote  
  2. Because there is no demand for it. "Backing up your source footage" isn't really a valid reason . It's overkill for most people

    Most internal acquisition formats are 8bit 4:2:0 Y'CbCr . HDMI with exteral recorders are usually limited to 8bit 4:2:2 Y'CbCr. HDSDI can output true 10bit 4:2:2 in some cameras, but I think there only is one or two <$10 and you need an external recorder that can record 10bit 4:2:2 (like samurai , ninja , kipro, for prores/dnxhd or hyperdeck shuttle 2 for uncompressed). The only camera that records RGB 4:4:4 <$20K is is the F3. The Red Scarlet and BM cinema camera record a sort of compressed RAW, but Hi444PP would actually be a downgrade - it cannot hold all the information

    For high end VFX intermediates , there are already other formats commonly used with higher bit depth like openEXR (32bit float)

    HEVC will be out by the time there is a need for higher bit depth intermediates or commonplace 4K acquisition, and replace h.264 anyways


    Currently x264 supports Hi444PP, up to 10bit . No NLE can read it however
    Quote Quote  
  3. Member
    Join Date
    Sep 2012
    Location
    Bellevue
    Search PM
    Thanks poison, I did see HEVC and it looks promising but I'm guessing it'll be awhile before it's widely supported. 8Ktv's seem a bit ridiculous.
    Quote Quote  



Similar Threads

Visit our sponsor! Try DVDFab and backup Blu-rays!