Frame Rates Confusion

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VaricamLife

Well-known member
In FCP your frame rate choices are 23.98 (23.976), 24, 25, 29.97, 30, 50, 59.94, and 60.

The rate/100.1% ones I get. If you're going to broadcast you're using those frame rates.

True 24 I get. If you're going out to film, you need a true 24 for audio sync.

But when is true 30 or true 60 used? Can you output to a tape in true 30 or true 60? Is it meant for like BluRay/optical discs? Do they employ true frame rates? Or are the people that list a difference between 29.97/30 and 59.94/60 have something confused on their end?

I've seen the true 30 and true 60 used (along with 29.97 and 59.94) in a couple of actual trade articles (not just like Wikipedia). But none of them actually discuss the use/reason/distinction of the frame rates.

Oh and if there is a real use/reason for true 30/60, when are they used? Only in HD? Or is say 480p30 or 480p60 used in any scenario?
 
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But when is it used?

But when is it used?

Well I assumed they were certified rates yes. But I'm just curious about the practical application of 30.00 and 60.00. Do any broadcasters actually request/accept that in their specs? Other than a digital distribution, is there some other output source for those rates? Or is it just something that is technically certified but in practical terms, rarely used?
 
30.00 and 60.00 would never be used in broadcast. Ever.

Those frame rates would most likely be used in an overcrank situation for a project that was shot at 24.000, maybe.
 
Thanks Barry!

Oh also, if you're aware, do any broadcasts do 59.94 progressive as "60" independent frames, or are they all duplicate frames (so just 2x 29.97)?
 
What about 1080p60? I read some ambiguous articles about it coming into play as a distribution format (not just 1080p24 converted to 1080p60 on HDTVs that don't support native 24). Is anyone actually distributing with that yet? ESPN went out and created an infrastructure to do so, but I'm not sure how far along they really are or if any carrier is actually delivering that to our homes.
 
Broadcast "1080p60" will be 59.94. For 99% of your projects you'll be working at 23.98 or 29.97 if you're in an NTSC country. Everything else is just there to be there.

Noah
 
Ah yah my bad, I assumed 1080p60 broadcast is 59.94. I was just curious if anyone was aware of it having come into play yet. I've only heard about ESPN's intentions of outfitting their studio for such. But I haven't heard of it actually being formally used yet. I'd be really interested to see the Superbowl in 1080p60.
 
VaricamLife said:
Ah yah my bad, I assumed 1080p60 broadcast is 59.94. I was just curious if anyone was aware of it having come into play yet. I've only heard about ESPN's intentions of outfitting their studio for such. But I haven't heard of it actually being formally used yet. I'd be really interested to see the Superbowl in 1080p60.
Click to expand...
With rate shaping and downsampling, it will not look better than current HD-Lite.
 
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