DELETED_5350

they've been recording a lot of stuff in HD for years, and any half decent film print can be made into HD for broadcast I beleive.
 
Isn't everything already in 'hdtv' / high resolution but they just reduce it for TV/DVD etc.
 
35mm film contains far more detail than HDTV so any film recorded that way (nearly all of them) can be transferred to HD

TV shows/sport have been recorded in SD and now HD cameras are replacing them.
 
as above really, if its recorded on film then its scanned with higher resolution. If using digital camera's then a higher res CCD is needed. I guess the reason its only just come to light is because we now have the technology to cope with the massive bandwidth requirements, I just pressed a few buttons and worked out that a 1080i capture at 25fps would be 98MB/s assuming the camera's use 16bpp which I think they do. Obviously thats before compression but thats whats going to need to be sent around and processed in realtime for a live broadcast.
 
Stupid question as I know 'film' surpasses HD resolutions, but what kind of resolution is it? As in, Cinemas and what not. Obviously it must be insanely high for the size of screen they're using.
 
Mikol said:
Stupid question as I know 'film' surpasses HD resolutions, but what kind of resolution is it? As in, Cinemas and what not. Obviously it must be insanely high for the size of screen they're using.
Click to expand...

Erm, I think a decent shot on 35mm is about 14-24M Pixels.
 
So if standard 35mm that has been used for years can be used for HiDef what's all this talk that the World Cup and BBC's Planet Earth is/was filmed using special HD cameras? :confused:
 
Goatboy said:
Film resolution is in the region of 4000x2000
Click to expand...

About 4500 x 2500 according to my diss :)

Theres no real way to quantify resolution from film, it's all estimates. They used to think it was more like 1,800 lines across. When they projected something digitally at that resolution, they then wondered why it looked terrible!

Dont forget film degrades though, if you watch a well-used reel in the cinema, in lamen's terms you might be watching at more like 1K resolution rather than what it was when it was fresh.

HDTV resolutions are all obviously less than digital cinema though, although there's plenty of HD cameras out, theres only one or two that can run at 4.5kx2.5k (planned resolution for digital cinema projection). http://www.red.com caused a nice stir at this years NAB (the guy that owns Oakleys is behind that).

Oh, and to turn film into digital you use a telecine machine, the result is a digital intermediate. Done for probably all of feature-films nowadays, as all editing and effects are obviously digital. The dumb thing is, that they're then put back on to film for exhibition.

meh, i knew that diss would come in useful :p
 
NathanE said:
So if standard 35mm that has been used for years can be used for HiDef what's all this talk that the World Cup and BBC's Planet Earth is/was filmed using special HD cameras? :confused:
Click to expand...


Film has to be transferred therefore it makes sense to use HD cameras in the first place.
 
for films, yes.

As for the BBC, they will be digital camera's, you can't very well transfer 35mm to digital, add computer graphic overlays, resize and compress in realtime :p
 
NathanE said:
So if standard 35mm that has been used for years can be used for HiDef what's all this talk that the World Cup and BBC's Planet Earth is/was filmed using special HD cameras? :confused:
Click to expand...

Well live remote location sport obviously has to be uplinked to a satellite and down again to local transmitter station so this has to be done digitally therefore the lowest bandwidth required is used. This is also true of live news broadcasts where there is always a decision to be made about quality versus to to get pictures to studio.
 
You must log in or register to reply here.
Back
Top Bottom