Tweet
Hello,
Background of the project:
I am working on a project to create green screen shots of an actor that I will use in Flash. I'm using Combustion to create the alpha channel + video that I then bring into the Flash Video encoder and create the alpha channel encoded video .flv files. The green screen footage was shot with Betacam and I imported the footage from betacam through the ADVC - 700 into EDIUS. All was well, until I tried to make the keys in Combustion.
I could not create a clean key with the imported footage (blocky around the edges). I know the EDIUS product works in 4:2:2 color space, but am I wrong in guessing that the ADVC - 700 is creating 4:1:1 color space video when I digitize it? As a test, we had access to a Pinnacle Targa 3000 card and digitized the footage with that using it's native YUV 4:2:2 capture setting. This footage keyed very nicely in Combustion. So I am worried that, while using the ADVC - 700 for video capture is fine for everything else, it is not a good option for capturing green screen footage? I can't seem to accept this because I know the ADVC - 700 does a great job but I've seen the results first hand between the two capture devices. Any ideas what I may be doing wrong? I've read everything I can find on this forum and can't seem to get a really straight answer. Thanks in advance....
Background of the project:
I am working on a project to create green screen shots of an actor that I will use in Flash. I'm using Combustion to create the alpha channel + video that I then bring into the Flash Video encoder and create the alpha channel encoded video .flv files. The green screen footage was shot with Betacam and I imported the footage from betacam through the ADVC - 700 into EDIUS. All was well, until I tried to make the keys in Combustion.
I could not create a clean key with the imported footage (blocky around the edges). I know the EDIUS product works in 4:2:2 color space, but am I wrong in guessing that the ADVC - 700 is creating 4:1:1 color space video when I digitize it? As a test, we had access to a Pinnacle Targa 3000 card and digitized the footage with that using it's native YUV 4:2:2 capture setting. This footage keyed very nicely in Combustion. So I am worried that, while using the ADVC - 700 for video capture is fine for everything else, it is not a good option for capturing green screen footage? I can't seem to accept this because I know the ADVC - 700 does a great job but I've seen the results first hand between the two capture devices. Any ideas what I may be doing wrong? I've read everything I can find on this forum and can't seem to get a really straight answer. Thanks in advance....
Comment