-
Downconvert to SD to color and contrast check???
Just got a book on Friday that clams to be a comprehensive guide for the digital age of film making. So far I have learned quite a bit!
The book said that if you use a capture card that can down convert HD output to SD on the fly, you can use a NTSC/PAL broadcast monitor to accurately judge color and contrast.
I know the primary difference between a computer monitor and a tv/broadcast monitor is the type of input, RGB or YCbCr. It fits that judging color and contrast on a YCbCr device at 480×720 will be just as good as a YCbCr device at 720×1280 or 1080×1920. The book also says that the resolution can be checked on the computer monitor.
So, if this all correct, any recommendations on a NTSC broadcast monitor to use for color and contrast checking? I did see the JVC DT-V100CGU, it seems a reasonable price. So would that be a good broadcast monitor to pair with a Blackmagic Design DeckLink HD Extreme card?
Sam
-
3 Replies
-
Hi Sam
Sadly you can’t believe everything you read. Yes, its certainly going to be better than not checking on a good properly calibrated broadcast monitor at all, and much better than checking on a consumer HDTV, but sill it won’t be truly “accurate” for critical evaluation/correction purposes. SD and HD are not differentiated only in frame size, they also adhere to different technical standards and specifications, and whilst the card should properly handle the Rec 709 to Rec 601 conversion, the result is that what you are monitoring and correcting is in a different color space form the real source … so using SD to critically correct an HD source is never going to be perfect. After all, if it were really that simple don’t you think everybody would do it that way?
Best
Andy -
What about broadcast monitors like the JVS DT-V100CGU? JVS says that by adding the optional input card, it is compatible with all the major HD formats. Is the optional input card simply doing a Rec 709 to Rec 601 conversion or is it a viable option over the $4000+ options?
My thought processes is get the basic JVS DT-V100CGU today and use that to produce the DVD and a sample Blue-ray this year (early 2009). Next year early 2010) when I am building the blue-ray DVD, get the optional card.
Sam
-
Hey Sam. Wondering if you ever got that DT-V100CGU and what your results were.
Reply to this Discussion! Login or Sign Up