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Very confused about interlace now
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[Michael Gissing] “Early HD was analog and double NTSC/PAL lines so not strictly 1080 as that is a digital pixel dimension.”
It was “1035” wasn’t it?
And yes, FCPX needs proper monitoring. Nothing new here.
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1050 lines. Twice NTSC 525. I remember sitting at Narita airport watching Japanese baseball games in HD in the early ninties or visitng the Sony showroom in Ginza and watching demo movies in their small theatre playing off modified 1″ video decks.
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Actually there were lots of different line rates
https://en.wikipedia.org/wiki/Analog_high-definition_television_system -
A big thank you to all. I’ve learnt a great deal from this thread. Many thanks to all who have taken the time to post.
Let’s hope that interlace and 4:3 die sooner rather than later.Alan
FlashXDR,XDcamHD,XDcamEX,D9 etc
FCS,AE,Combustion,LiquidSilver,Vegas,Edius,
G5,MBP,Vista64,XP -
Why would you not use interlacing? Without it, you’re stuck at 30fps at 1080p. Would you rather have the temporal resolution of 720p60 but at 1080 resolution? Until we get 1080p60 1080i is where it’s at IMHO. I do a lot of motion graphics, and if you have fine text moving around (say a pan of a newspaper) that you’d actually like to be legible it just can’t be done at 30fps unless you’re moving real slow. It’s a stuttery mess. Motion blur will relieve the stutter, but of course leaves the image, well, blurred.
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[Bret Williams] “Why would you not use interlacing? “
True. Interlacing was a compromise from the beginning due to limited bandwidth. Those same issues exist today even though much higher bandwidths are available. But if you need the temporal resolution of 60 fps at 1080 then interlaced is the only way to go. Hopefully 1080 60P becomes a reality at some point.
An interesting thing about 720P is in comparison to 1080i, you have a full 720 lines of vertical rez as opposed to 1080i you only have 540 per field so any type of slo-mo at 1080i takes a pretty big hit in sharpness. Of course 1080 24p and 30p are definitely better than 720p but for sports and things where you do a lot of slo-mo, 720 has advantages as you get the full rez at whatever speed.
Robert Brown
Editor/VFX/Colorist – FCP, Smoke, Quantel Pablo, After Effects, 3DS MAX, Premiere Prohttps://vimeo.com/user3987510/videos
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[Michael Gissing] “John Logie Beard, the inventor of TV …”
Wasn’t he the fella in ZZ Top 😉
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