Best Blu-ray Movie Deals


Best Blu-ray Movie Deals, See All the Deals »
Top deals | New deals  
 All countries United States United Kingdom Canada Germany France Spain Italy Australia Netherlands Japan Mexico
The Prestige 4K (Blu-ray)
$22.99
13 hrs ago
Rubber (Blu-ray)
$6.99
3 hrs ago
John Wick: Chapters 1-3 4K (Blu-ray)
$25.60
 
Monster Hunter 4K (Blu-ray)
$24.99
 
Wonder Woman 1984 3D (Blu-ray)
$28.99
 
Monster Hunter (Blu-ray)
$19.96
12 hrs ago
Ultraman Leo: The Complete Series (Blu-ray)
$42.99
9 hrs ago
My Hero Academia: Season Four: Part Two (Blu-ray)
$33.99
 
Supernatural: The Complete Series (Blu-ray)
$289.99
 
Bad Boys for Life 4K (Blu-ray)
$14.99
 
Lovecraft Country: The Complete First Season (Blu-ray)
$26.28
3 hrs ago
Wonder Woman 1984 (Blu-ray)
$24.99
 
What's your next favorite movie?
Join our movie community to find out


Image from: Life of Pi (2012)
Old 06-10-2009, 04:43 AM   #1
Mr. Rabbit Mr. Rabbit is offline
New Member
 
Jun 2009
Default 23.976p or 24p for Blu-ray?

Hi, I know that Blu-Ray is capable of both 23.976p and true 24p, and I'm under the impression that film is shot at true24p, but I read somewhere that many Blu-Ray films were being released with the 23.976p frame rate. is this is true and if so why
  Reply With Quote
Old 06-10-2009, 05:01 AM   #2
4K2K 4K2K is offline
Special Member
 
Feb 2008
Region B
Default

Quote:
Originally Posted by Mr. Rabbit View Post
Hi, I know that Blu-Ray is capable of both 23.976p and true 24p, and I'm under the impression that film is shot at true24p, but I read somewhere that many Blu-Ray films were being released with the 23.976p frame rate. is this is true and if so why
I think >95% of 24fps films are released on Blu-ray as 23.976fps and <5% are released as 24.000fps (I'm excluding films that are released in 1080i here).

Since Blu-ray is capable of both, I don't see why they don't go with 24.0fps really as it should be simpler, especially on modern HDTVs - if they supported it properly.

It's because of the analogue NTSC standard. When they introduced colour into NTSC they changed it from 60hz to 59.94 (or 60/1.001?) or something like that. See the Wikipedia entry for NTSC. It says it was to "reduce interference between the chrominance signal and FM sound carrier".

Now that we have digital HDTVs I don't see why they don't use the simpler 24.0, 60.0, 120.0 etc. What do modern HDTVs do when they get a true 24.0fps signal - convert it to 23.976? I assume most/all 60hz TVs are really running about 59.94 and 120hz ones are really running about 59.94*2=119.88Hz?

I bet they're usually using 59.94 and 23.976 for compatibility with most of the existing TVs. 23.976 should be easier to display on current TVs if they're actually 59.94 or 119.88hz (by applying 3:2 pull-down or frame duplication. 23.976*5=119.88).

Last edited by 4K2K; 06-10-2009 at 05:55 AM.
  Reply With Quote
Old 06-10-2009, 05:54 AM   #3
syncguy syncguy is offline
Blu-ray Guru
 
syncguy's Avatar
 
Mar 2008
Default

Yes, most blu-ray movies are transferred at 23.976P rather than 24P.

In some cases I have seen people complaining when transfer rate is 24P because their equipment is dropping frames. Some equipment e.g. external scalers, displays etc. could be less agile to frequency variations and manifest annoying frame slips when transferred at 24P.

I expect all new equipment capable of 24P and multiples (96, 120 hz etc.) are capable of syncing at multiples of 23.976. Therefore 23.976 transfers have universal compatibility while a pure 24P transfer may encounter problems with some oldish equipment.
  Reply With Quote
Old 06-10-2009, 06:10 AM   #4
X400 X400 is offline
Blu-ray Samurai
 
X400's Avatar
 
Jul 2007
Kent
328
41
23
Default

i was under the impression that 24p=23.976p just like 30=29.9 etc

thought they just rounded it up for marketing
  Reply With Quote
Old 06-10-2009, 06:22 AM   #5
syncguy syncguy is offline
Blu-ray Guru
 
syncguy's Avatar
 
Mar 2008
Default

Quote:
Originally Posted by X400 View Post
i was under the impression that 24p=23.976p just like 30=29.9 etc

thought they just rounded it up for marketing
No they are not marketing roundups. They are different frequency transfers.
  Reply With Quote
Old 06-11-2009, 12:26 AM   #6
Mr. Rabbit Mr. Rabbit is offline
New Member
 
Jun 2009
Default

anyone know where you can find a list of Blu-Ray films and their fps?
  Reply With Quote
Old 06-11-2009, 03:50 PM   #7
4K2K 4K2K is offline
Special Member
 
Feb 2008
Region B
Default

Quote:
Originally Posted by Mr. Rabbit View Post
anyone know where you can find a list of Blu-Ray films and their fps?
This thread has a list:
https://forum.blu-ray.com/showthread.php?t=3338

All titles in the list with no fps listed are 1080p23.976 according to the list.

Last edited by 4K2K; 06-11-2009 at 04:56 PM.
  Reply With Quote
Old 11-27-2020, 11:18 AM   #8
FritzKubrick FritzKubrick is offline
Member
 
FritzKubrick's Avatar
 
Oct 2015
Sweden
21
71
Default

I know this is an extremely old thread but is this still the case? What about UHD; do they show the correct frame rate?
  Reply With Quote
Old 01-12-2021, 02:44 PM   #9
Geoff D Geoff D is offline
Blu-ray King
 
Geoff D's Avatar
 
Feb 2009
Swanage, Engerland
666
1969
5
28
Default

Quote:
Originally Posted by FritzKubrick View Post
I know this is an extremely old thread but is this still the case? What about UHD; do they show the correct frame rate?
No, most stuff produced by the major studios is still encoded at 23.98. European distributors like StudioCanal have no need for such legacy concerns so they encode their BDs and UHDs at 24 exactly, some of which have been released in the US by Lionsgate (they're SC's American distributor so use the same masters).
  Reply With Quote
Reply
Go Back   Blu-ray Forum > Blu-ray > Blu-ray Technology and Future Technology

Similar Threads
thread Forum Thread Starter Replies Last Post
What is the significance of 24p playback on blu ray?? Blu-ray Players and Recorders Steelmaker 35 05-03-2020 09:36 PM
24p Help Display Theory and Discussion Kieran 26 08-11-2009 10:00 PM
Which is the best Hz when view 24p on Blu-ray? Blu-ray Players and Recorders mugupo 19 06-17-2009 02:15 PM
Does Documentary Blu-ray support 24p? Blu-ray Movies - North America mugupo 3 06-09-2009 05:55 PM
Can't play blu-ray discs with Samsung TV after 1.8 update? - FIX: turn off auto 24p Blu-ray Players and Recorders jeremy_williams 6 05-29-2007 07:44 PM


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 01:23 AM.