David Esp Video Technical Blog

Some further tips found online:

• [http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=4&MessageID=704856]
  • You have more than a dozen choices in the DNxHD codec…  (but you might not see them) because of the little display bug. When you select the Avid DNxHD codec, a window pops up. At the bottom of that window is just a little sliver of a pulldown menu. Click that and all should become clear.
• [http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=4&MessageID=701760]
  • DNxHD is a broadcast codec. And types that are not broadcast standards are not included.
  • …in the “Custom Settings” you can … set the Frame rate and the Field order to suit your … footage.
• [http://www.sonycreativesoftware.com/forums/ShowMessage.asp?MessageID=712102&Replies=1]
  • Settings for HD interlaced:
    • Color levels should be RGB
    • Size should be 1920×1080
    • Pixel aspect 1:1
    • Field order Upper
    • DNxHD-TR 175 8-bit template
    • Be sure to click OK (the dialog may fail to display it)
  • Variation for HDV:
    • Thin Raster is supposed to be better for stretched pixels like 1440×1080
• [http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=4&MessageID=710761]
  • You will be able to preserve aspect and gamma with DNxHD. Be sure to select the right bit depth and color levels for your originals. (For a) 1440×1080 source, (i.e.) HDV, … you will want 8-bit, 4:2:0 RGB output to match the originals.
  • One user’s experience (not mine):
    • Here’s the file settings for … m2t files (as provided by MediaInfo):
      • 25Mbps, 1440×1080 (16:9), at 29.97fps, MPEG video component version 2,(Main (high @1440)) BVOP
    • Here’s what it reports for the .mov generated by DNxHD:
      • 220Mbps, 1920×1080 (4:3) at 29.97fps, VC-3, DNxHD
    • I’m not sure where it got the 1920×1080 frame setting from, though. In the frame size box, I had custom frame settings of 1440 x 1080 with a PAR of 1.333.
    • Reply:
      • 1440 X 1.333 = 1919.52 which rounds up to 1920.
      • Your render frame size should be set to 1920×1080 to preserve the aspect. As gets mentioned a lot in these forums, MOV does not respect PAR.
• [http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=4&MessageID=709379]
  • Best way to export timeline to FCP for CC:
    • Change your color space to RGB. Click the little pulldown window at the bottom, select 1080i/59.94 DNxHD 220x. And when you say OK to this window, change the slider from the current 50% quality to 100%. Then render out. The file will be slightly less than 2 minutes per gig.
    • Avid 1:1 is an uncompressed codec designed for SD video. DNxHD is an HD codec and the only one Avid uses.

This entry was posted on Wednesday, May 26th, 2010 at 20:37 and is filed under Avid, DNxHD, Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.