Originally Posted by Joe Bloggs
It doesn't say they are all going to agree on just one frame rate. If that was the case, they would probably have just one rate in the specs above.
I don't think the EBU would have made the above request (to add 50Hz based frame rates to ITU-R BT.2020) if they, and the others, had decided to use just one frame rate for the whole world.
I think you miss some important points here.
These things are not set in stone.
The ITU-R BT.2020 recommendation was finalized recently after some years of work to set a standard for UHD material which is created/tested now.
The FoBTV initiative was commenced in April this year, so it is a very new initiative.
If they are successful and manage to create a unified broadcast system for the whole world, there will be a lot of new ITU standards recommendations, which means 150fps will have no real purpose as all new UHD material will be produced according to the new future broadcast standard.
Much will change before any meaningful amount of HRF UHD material will be produced for broadcast.
There are still very little 4K material produced at all for the time being.
The base framerate which for broadcast has been 30/60 and 25/50 because of the NTSC and PAL differences that came with the two systems created at different times in history, but most importantly had to sync to the electrical system differences between the US and EU of 60Hz and 50Hz.
It was not really even a choice of "What is the best framerate".
NTSC and PAL material have really no business being broadcasted in a future proper UHD channel.
120fps is more useful than 150fps because it is multiple of 5*24fps, and then Cine frame rates and Broadcast frame rates starts to merge.
If FoBTV initiative is smart they rather settle for 24,48,72,96,120. Then they can use the same equipment and frame rates as the movie industry.
150fps doesn't really make any sense at all. Multiple of PAL 25fps*5 = 125fps, which would make more sense than 150fps.
There are really no UHD/4K 120fps material being produced except for test purposes today.
Some people have been shooting 120fps 5K in 2,4:1 3D recently for a demo for; "Qube Digital Cinema Company to showcase their 120fps HFR capable QUBE IMB which is only the first and only one right now to project 2K @ 120fps in 3D using QUBE Digital Cinema Server and Two Projectors."It seems to not be too easy.
And even that is in the end only 2K, and is for cinema.Edited by coolscan - 10/24/12 at 8:54am