HD-SDI: 1080i or also 24f?

[agwah]

thanks,

guess we are waiting for that one

 

[PaPa]

so uncompressed just means 4:2:2 ??

 

[Barry_Green]

No, uncompressed means it hasn't undergone a compression scheme.

4:2:2 is, in and of itself, a sort of compression -- the rawest signal could be up to 4:4:4, although that is really rare in video, you usually only see 4:2:2 at the max.

 

[PaPa]

so the resolution remains the same? quality of image perhaps slightly lessened, and a 4:1:1 color space as opposed to 4:4:4 ? can the G1 produce this? along with the h1?

 

[Barry_Green]

Direct HD-SDI output is probably the 1920x1080 image off the DSP, vs. the 1440x1080 recorded by HDV. And it should be 4:2:2 off of HD-SDI, vs. the 4:2:0 of recorded imagery. And it will be 100% free of compression artifacts.

The G1 and H1 can both do it, the other cameras can do uncompressed analog component, the newest crop of cameras can do it through HDMI.

 

[PaPa]

does the A1 have this? ( i always feel so ignorant around you )

 

[Barry_Green]

A1 can do uncompressed analog output. Barlow just put up a thread here in the last few days showing HDV capture vs. uncompressed analog capture from an A1, you should look for recent threads started by Elton.