Latest post Thu, May 17 2018 4:27 PM by jef. 1 replies.
Page 1 of 1 (2 items)
Sort Posts: Previous Next
  • Thu, May 17 2018 3:55 PM

    • BenoitM
    • Top 100 Contributor
    • Joined on Fri, Nov 4 2005
    • Brussels, Belgium
    • Posts 1,115
    • Points 13,470

    4:2:2 8 bit camera to DNxHD recorder format question

    Just a sanity check, before a low-budget multicam shooting of a musical: overall brightness of the show will be quite low, will push the available cameras to their limits and require some exposure correction in post.

    The cameras in question are AVCHD (4:2:0 in PAL world, 8 bit) but offer 4:2:2 (also 8 bit) at the SDI terminal; I plan to use external recorder (DNxHD) as past experience has showed me that this extra color info does buy me some sharpness/details in some situations (e.g. dark scenes with just dim red light). In that context, would recording with 185X offer any advantage over 185 with only 8 bits at the input ? I guess no, but want to be sure as any quality gain in the low lights can be used here...

    MC 2018.2 (Symphony option)/BCC 10.0.5/RED 5.6; Matrox MXO2 Mini (8.0.0); DELL Precision M4700 - Intel Core i7-3740QM 2.7 GHz - 24 GB RAM; nVidia Quadro... [view my complete system specs]
  • Thu, May 17 2018 4:27 PM In reply to

    • jef
    • Top 50 Contributor
    • Joined on Sun, Feb 26 2006
    • Maryland
    • Posts 3,190
    • Points 38,740

    Re: 4:2:2 8 bit camera to DNxHD recorder format question

    My opinion (and it is just an opinion) would be record dnx 185 - not 185x.  The data rate for both is the same, meaning the x varient (10bit) actually has a lower overall bit rate.

    Then when editing and color correcting, have all renders and mixdowns be 185x given that the color correction (in theory) can create colors that would not exist in an 8 bit world.

    Just trying to get the most out of compressed media.

    Jef

    Avid DS 11.0.2 R.I.P | MC 8.5.3 / 8.9.4 | OS 10.11.x - various MacPro Towers - home system MacPro Dual 2.8 8core GTX680 "Harpertown" QT 10.0... [view my complete system specs]

    _____________________________________________

    Jef Huey

    Senior Editor

    Old Stuff  http://vimeo.com/album/3037796

Page 1 of 1 (2 items)

© Copyright 2011 Avid Technology, Inc.  Terms of Use |  Privacy Policy |  Site Map |  Find a Reseller