It's not a big discover to say that MPEG compression is not good for postproduction tasks, specially if you need to do an intense croma key work like the one you can see at http://www.vimeo.com/5207926. In this case is essential to use a plugin called Red Giant Primatte Keyer (sure you know it). The results are good (I think...)
Sony EX1 & Croma Keys
- Thread starter sebastala
- Start date
GuyB
Well-known member
MPG compression is better than other codecs, many of them. I'd like to see what DVCPRO HD would achieve if it has a 1920x1080 option @ 25 or 35Mbps..... It would be a mess
Having said that, while XDCAM EX does key very well in its own right, it isn't perfect and can always do with some extra bandwidth. This is where a FlashXDR or nanoFlash come in. Once the nanoFlash is available in a few weeks, it will have to be the best key improving tool an EX user can get. A better capture has always got to be better than better post processing.
Having said that, while XDCAM EX does key very well in its own right, it isn't perfect and can always do with some extra bandwidth. This is where a FlashXDR or nanoFlash come in. Once the nanoFlash is available in a few weeks, it will have to be the best key improving tool an EX user can get. A better capture has always got to be better than better post processing.
basspig
Veteran
Well it's nearly impossible to spot flaws on a 320x240 web video, but I do think I saw some green spill on the edges during the closeup shots.
Getting a good key on XDCam EX is easy if you shoot progressive. I would not even consider interlaced as the colors spill excessively in that mode and would be unsuitable for keying.
Getting a good key on XDCam EX is easy if you shoot progressive. I would not even consider interlaced as the colors spill excessively in that mode and would be unsuitable for keying.
cheezweezl
Veteran
EX footage keys very well if shot correctly. It has been proven time and time again.
this video shot on EX3
BTW, Keylight is a much nicer keyer than primatte...
this video shot on EX3
BTW, Keylight is a much nicer keyer than primatte...
basspig
Veteran
Yes, the color subsampling appears to double in resolution in progressive. Anything I shot in 60i has blockiness around colored objects, but in 30P, the colors look just like a still photograph, no visible spill at normal magnification. Interestingly, taking progressive footage and rendering it out to interlaced drastically degrades color resolution too.