Chromakey with native HDV or Cineform intermediate

prairiedogpics wrote on 11/29/2007, 8:09 AM

I'm going to be doing some blue screen work for a project with my son. I have Vegas 7 with the "built-in" Cineform intermediate capability. Using a Sony HC7.
Which will give better keying results in Vegas: the HDV footage (mpeg2) footage straight from the camera, or the converted Cineform .avi files?

Thanks,
Dan

Comments

Serena wrote on 11/29/2007, 5:29 PM

Dan, nobody else has come in on this so I'll offer my limited experience and suggest that Cineform will offer superior results. In practice you might not see much difference between using 4:2:0 and Cineform's 4:2:2, but when you view the frame grabs iin http://www.cineform.com/technology/HDVQualityAnalysis/HDVQualityAnalysis.htmcineform tech notes[/link] you'll see the potential advantages.
More important will be your chroma key set up: chroma screen, lighting and matching to your background plate. See http://www.sonycreativesoftware.com/forums/ShowMessage.asp?ForumID=4&MessageID=557497screen[/link] and http://www.bluesky-web.com/greenscreen-6.htmGreen Screen and Skin Tone[/link]

JohnnyRoy wrote on 11/29/2007, 8:17 PM

I do all of my HDV chroma key work using a green screen (not blue) and the Cineform codec. Blue screens are primarily for film and green are for video. Cineform holds up very nicely with chroma keying.

~jr