Best Blu-ray Deals

Best Blu-ray Deals, See All the Deals »
Top deals | Price drops  
 All countries United States United Kingdom Canada Germany France Spain Italy Japan
Alien Anthology and Prometheus (Blu-ray)
$19.98
 
The Strain: The Complete First Season (Blu-ray)
$24.99
 
Edge of Tomorrow 3D (Blu-ray)
$19.99
 
Defiance: Season Two (Blu-ray)
$19.96
 
Edge of Tomorrow (Blu-ray)
$14.99
 
Godzilla 3D (Blu-ray)
$19.99
 
A Million Ways to Die in the West (Blu-ray)
$9.99
 
Halloween: The Complete Collection (Blu-ray)
$79.99
 
The Equalizer (Blu-ray)
$18.99
 
Arrow: The Complete Second Season (Blu-ray)
$19.99
 
Lone Survivor (Blu-ray)
$9.99
 
Jersey Boys (Blu-ray)
$14.99
 
The Complete Jacques Tati (Blu-ray)
$59.99
 
COLLECT WATCH TRACK RATE REVIEW APP
Manage your own movie collection and always keep it with you with our Apps. Price track movies and get price drop notifications instantly. Become a member to take full advantage of all site features.
GET STARTED
Old 07-18-2008, 07:47 PM   #1
LeHobbit LeHobbit is offline
Member
 
Oct 2007
Default Blu-ray framerate

I wanted to know how at which framerate a film is stored on a Blu-ray disc ? I think it's at 24 frames per second. Is that right ? Also what is the resolution of the frame used to store an image on the disc ? Is it always 1920 x 1080 or it depends on the parameters chose by the authorer ?
  Reply With Quote
Old 07-18-2008, 08:23 PM   #2
stockstar1138 stockstar1138 is offline
Banned
 
stockstar1138's Avatar
 
Apr 2007
Default

Quote:
Originally Posted by LeHobbit View Post
I wanted to know how at which framerate a film is stored on a Blu-ray disc ? I think it's at 24 frames per second. Is that right ? Also what is the resolution of the frame used to store an image on the disc ? Is it always 1920 x 1080 or it depends on the parameters chose by the authorer ?
Yes, blu-ray has a framerate of 24fps.

i have never seen a resolution other than 1920x1080p or 1920x1080i.
  Reply With Quote
Old 07-18-2008, 10:34 PM   #3
LeHobbit LeHobbit is offline
Member
 
Oct 2007
Default

Thanks, but can you confirme that a film is PHYSICALLY stored on a disc at 24 fps and that the frame which contains the image of the movie are ALWAYS in 1920 x 1080 whatever the format of the movie is (ie 720p or 480p or 1080p) ?
  Reply With Quote
Old 07-18-2008, 10:46 PM   #4
McBain McBain is offline
Senior Member
 
Oct 2006
Default

Some background: http://www.hughsnews.ca/faqs/authori...ifications#4.6

Last edited by McBain; 07-18-2010 at 02:47 PM. Reason: updated link
  Reply With Quote
Old 07-19-2008, 12:07 AM   #5
dialog_gvf dialog_gvf is offline
Moderator
 
dialog_gvf's Avatar
 
Nov 2006
Toronto
320
Default

^^^ Good link. That shows all the supported rates and frame sizes.
  Reply With Quote
Old 07-19-2008, 08:52 AM   #6
4K2K 4K2K is offline
Special Member
 
Feb 2008
Region B
Default

What about content that is in 1080p/50 (or 3840x2160p/50 ) - why isn't Blu-ray going to be updated to handle these important rates?
  Reply With Quote
Old 07-19-2008, 08:57 AM   #7
Deciazulado Deciazulado is offline
Site Manager
 
Deciazulado's Avatar
 
Aug 2006
USiberia
5
2501
2689
Default

I actually found it amusing it can encode 480 mpeg-2 video at smoothie bitrates
  Reply With Quote
Old 07-19-2008, 10:45 AM   #8
LeHobbit LeHobbit is offline
Member
 
Oct 2007
Default

Quote:
Originally Posted by McBain View Post
Thanks. I already knew this site, but I wanted to know how the film is stored on the disc and not how it is sent to the screen.
  Reply With Quote
Old 07-19-2008, 11:03 AM   #9
JadedRaverLA JadedRaverLA is offline
Power Member
 
Apr 2007
2
Default

Quote:
Originally Posted by LeHobbit View Post
Thanks. I already knew this site, but I wanted to know how the film is stored on the disc and not how it is sent to the screen.
The link posted was for the valid framerates and resolutions for storing video on the disc. "How it is sent to the screen" is a completely different matter that has more to do with your playback device capabilities than the disc spec. (Aside from rules enforcing HDCP, etc).

Currently, almost all discs out there use either 1080p24 or 1080i60 for the main content, though there are a few exceptions, and if you are authoring a title you aren't forced to use those modes.
HT setup: Sony 55" SXRD 1080p display, 60 GB PS3, Sony ES 7.1 Receiver, JBL Surround System

Notebook setup: Apple 15" MacBook Pro (late 2008 unibody), Intel T9400, 4GB RAM, 320GB HD; FastMac APP-6907 portable BD-ROM drive, Dell 2408WFP S-PVA 24" display, Windows Vista Business x64 (via BootCamp), PowerDVD 9 Ultra.
  Reply With Quote
Old 07-19-2008, 02:02 PM   #10
LeHobbit LeHobbit is offline
Member
 
Oct 2007
Default

OK. Thank you now I understand.
  Reply With Quote
Old 07-19-2008, 03:48 PM   #11
luca_frontino luca_frontino is offline
New Member
 
Dec 2007
Default

Wrong!
The actual framerate is 23.976 fps.
Be careful.
  Reply With Quote
Old 07-19-2008, 06:43 PM   #12
JadedRaverLA JadedRaverLA is offline
Power Member
 
Apr 2007
2
Default

Quote:
Originally Posted by luca_frontino View Post
Wrong!
The actual framerate is 23.976 fps.
Be careful.
What was wrong, excatly?

1080p24 is shorthand for 1920x1080 resolution at 24/1.001 frames per second
1080i60 is shorthand for 1920x1080 resolution at 60/1.001 fields per second

The table linked to (that everyone was talking about) explained that. Writing out 1080p23.9760239609 would be a fairly worthless shorthand, and not really necessary as anyone doing encoding work is using tools that are dealing with the framerates/1.001 anyway.
HT setup: Sony 55" SXRD 1080p display, 60 GB PS3, Sony ES 7.1 Receiver, JBL Surround System

Notebook setup: Apple 15" MacBook Pro (late 2008 unibody), Intel T9400, 4GB RAM, 320GB HD; FastMac APP-6907 portable BD-ROM drive, Dell 2408WFP S-PVA 24" display, Windows Vista Business x64 (via BootCamp), PowerDVD 9 Ultra.
  Reply With Quote
Old 07-19-2008, 07:11 PM   #13
LeHobbit LeHobbit is offline
Member
 
Oct 2007
Default

The video stream is sent to the diffusor in one of the formats specified in the table and this one process and converts it to a desired format. Is that right?
  Reply With Quote
Old 07-19-2008, 09:25 PM   #14
JadedRaverLA JadedRaverLA is offline
Power Member
 
Apr 2007
2
Default

Quote:
Originally Posted by LeHobbit View Post
The video stream is sent to the diffusor in one of the formats specified in the table and this one process and converts it to a desired format. Is that right?
I'm sorry, let me try to clarify. The video stream is stored in one of the formats shown in the table -- it MUST be as nothing else is supported for primary video stream.

The player is responsible for handling the different formats, and outputting in the desired format. That said, most players won't attempt to convert 50i or 60i to 24p, so they will either output 50i/60i or 50p/60p depending on their configuration and deinterlacing capabilities. Also, some players can convert 50i to 60i for display on US HDTVs... but not all do, and the result is far from ideal.

PC-based players generally are able to output in just about any resolution and framerate depending on the display device. Standalone players and the PS3 have their outputs fixed to the standard HDTV resolutions and framerates.

Out of curiosity, are you working on mastering a title, or just interested in the specs and how players handle the conversion?
HT setup: Sony 55" SXRD 1080p display, 60 GB PS3, Sony ES 7.1 Receiver, JBL Surround System

Notebook setup: Apple 15" MacBook Pro (late 2008 unibody), Intel T9400, 4GB RAM, 320GB HD; FastMac APP-6907 portable BD-ROM drive, Dell 2408WFP S-PVA 24" display, Windows Vista Business x64 (via BootCamp), PowerDVD 9 Ultra.
  Reply With Quote
Old 07-20-2008, 11:57 AM   #15
LeHobbit LeHobbit is offline
Member
 
Oct 2007
Default

Thanks for your reply. My question was just for my curiosity and understand what it is done with blu-ray discs.
Just to confirm what I have understood : the film is encoded in one of the format specified in the table. Then, the player output the stream to the TV the best way it can and then the TV do the same thing depending on the settings the user defined. Is that right ? By the way, did you have some good articles that talk about conversion between frame rates ? Thanks.
  Reply With Quote
Old 07-20-2008, 12:37 PM   #16
swifty7 swifty7 is offline
Special Member
 
swifty7's Avatar
 
Sep 2007
3
Default

can the ps3 convert 50p/i to 60/p/i?
  Reply With Quote
Old 07-21-2008, 02:09 PM   #17
Stephan.klose Stephan.klose is offline
Senior Member
 
Stephan.klose's Avatar
 
Jun 2008
Vienna
1
1555
79
Send a message via Skype™ to Stephan.klose
Default

The movies is normally stored in 1080p / 30 .. But the player can play it back in 24f which is the optimal way of watching a movie
1578 Blu Ray's
Link to my Movie List
  Reply With Quote
Old 07-21-2008, 03:55 PM   #18
JadedRaverLA JadedRaverLA is offline
Power Member
 
Apr 2007
2
Default

Quote:
Originally Posted by LeHobbit View Post
Thanks for your reply. My question was just for my curiosity and understand what it is done with blu-ray discs.
Just to confirm what I have understood : the film is encoded in one of the format specified in the table. Then, the player output the stream to the TV the best way it can and then the TV do the same thing depending on the settings the user defined. Is that right ? By the way, did you have some good articles that talk about conversion between frame rates ? Thanks.
You've got it. As for format conversion, I think I have some links on my home PC... I'll look when I get home tonight. In general, though, there's only a couple of conversions that are generally done.

To go from 1080p24 to 1080i60 or 1080p60 (most common conversion), the player uses the standard 3:2 pulldown method. You should be able to find LOTS of articles on that process as its been done to convert film to NTSC video for decades.

To go from 1080i60 to 1080p60 the video is processed by the players deinterlacer which recombines the fields in the video stream into a progresive signal. Most players cannot perform other types of framerate conversions (1080i50 to 1080p60, etc) as these require substantially more processing and still generally don't provide for fluid motion. 1080i50 is only really used on discs in PAL countries where the sets can accept a 50 field per second stream.

Quote:
Originally Posted by swifty7 View Post
can the ps3 convert 50p/i to 60/p/i?
Unfortunately not. It undoubtedly has enough processing power, but there are so few 1080i50 titles that SCE feels that there are more important areas to spend their development resources. Also, the judder and smearing caused by the conversion would be annoying.

1080i50 video should be converted to either 1080p24 (ala "Planet Earth") by slowing the video down slightly or 1080i60 by a true framerate conversion by the studio prior to encoding. Generally, slowing it down to 1080p24 works very nicely and doesn't produce motion artifacts, but for concerts where messing with the audio isn't ideal they would need to convert to 1080i60 to preserve the audio speed.

Quote:
Originally Posted by Stephan.klose View Post
The movies is normally stored in 1080p / 30 .. But the player can play it back in 24f which is the optimal way of watching a movie
Huh?

Actually, 1080p30 is not even a valid storage format on Blu-ray (which is somewhat disappointing). Video shot in that format has to be stored in 1080i60 and hope that the player or TV can recombine the fields correctly. Film and video shot in 1080p24 is stored in that formatm but is easily converted to 1080i60 or 1080p60 using 3:2 pulldown if necessary.
HT setup: Sony 55" SXRD 1080p display, 60 GB PS3, Sony ES 7.1 Receiver, JBL Surround System

Notebook setup: Apple 15" MacBook Pro (late 2008 unibody), Intel T9400, 4GB RAM, 320GB HD; FastMac APP-6907 portable BD-ROM drive, Dell 2408WFP S-PVA 24" display, Windows Vista Business x64 (via BootCamp), PowerDVD 9 Ultra.
  Reply With Quote
Old 07-22-2008, 09:29 AM   #19
LeHobbit LeHobbit is offline
Member
 
Oct 2007
Default

Thank you so much JadedRaverLA for your answer. THe only I want to know is how a famerate of 60i for example is "downconverted" to 24p.
  Reply With Quote
Old 07-23-2008, 01:37 PM   #20
LeHobbit LeHobbit is offline
Member
 
Oct 2007
Default

Quote:
Originally Posted by LeHobbit View Post
Thank you so much JadedRaverLA for your answer. THe only I want to know is how a famerate of 60i for example is "downconverted" to 24p.
I had new questions :

1) What equipement deinterlace the stream ? The TV, the player or one of both ?
2) Does anamorphic also work with Blu-ray ?
3) If a movie is letterboxed or pillarboxed, is it done directly in the encoded stream or it is the player or even the TV that do the job ?
  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
Serious framerate issues on Blu-Ray PC Blu-ray PCs, Laptops, Drives, Media and Software Anbesol 3 02-15-2009 03:42 AM
Framerate? Blu-ray Technology and Future Technology Damage Inc. 10 01-24-2009 04:39 PM
Framerate question for foreign films and BEST quality Blu-ray Technology and Future Technology Alex Pallas 5 01-06-2009 12:50 AM
Night/Werewolf encode error: wrong framerate Blu-ray Movies - North America Teazle 16 04-17-2008 03:59 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 02:21 AM.