1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

What exactly is NTSC.

Discussion in 'Blu-ray & DVD Players & Recorders' started by Bristol Pete, Apr 30, 2003.

  1. Bristol Pete

    Bristol Pete
    Well-known Member

    Joined:
    Oct 18, 2002
    Messages:
    5,577
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    106
    Location:
    Bristol.
    Ratings:
    +321
    Hello,

    New projector states that it can handle NTSC and NTSC 4:43.

    So, generally, what would I need to set my region one disks at?

    Only got a handful, Band of Brothers, Almost Famous etc.

    Thanks in advance,

    CB.
     
  2. kevenh

    kevenh
    Standard Member

    Joined:
    Jul 3, 2002
    Messages:
    342
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    19
    Location:
    Royal County Of Berks...
    Ratings:
    +0
    NTSC is the USA television standard.
    NTSC 4.43 is for playback on a PAL TV. The colour information is made to be like UK's PAL.

    NTSC = 525 lines, 60 fields, 15.734KHz line, Sub-Carrier 3.580MHz
    NTSC 4.43 = 525 lines, 60 fields, 15.734KHz line, Sub-Carrier 4.43MHz
    PAL = 625 Lines, 50 Fields, 15.625KHz line, Sub-Carrier 4.434MHz


    Maybe it depends on your DVD players capabilities, but NTSC is what your R1 disks are.
     
  3. WBC

    WBC
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Guys,

    Correct me if I'm wrong (I know you will!! :laugh: )



    Where as PAL is the standard for UK (& others) TV, NTSC is the American TV standard format (American NTSC uses different colour encoding and frame rates (60 frames per second instead of 50 frames per second) to PAL.

    This doesn't have any relevance to how you set up your region 1's. Just play and enjoy!!!!!

    Stace :D
     
  4. Reiner

    Reiner
    Active Member

    Joined:
    Jul 16, 2000
    Messages:
    3,315
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    61
    Location:
    Germany
    Ratings:
    +13
    :lesson: Nope. DVDs are neither PAL nor NTSC, they are 625/50 or 575/60 recorded in YUV format ("Component").
    There is no relation to the region code as such, e.g. R2 DVDs in Europe are all 625/50 but R2 DVDs from Japan are 575/60 instead.

    In fact the DVD player will decide what format to make out of this, i.e. 625/50 normally becomes PAL and 575/60 normally becomes NTSC when using the composite or S-Video output.
    Some players also allow to convert 575/60 DVDs to PAL, either true PAL (PAL50) - which is rarely found -, or PseudoPAL (PAL60), the latter equivalent to NTSC 4.43 mentioned by kevenh.

    With RGB or YUV (Component/YCrCb) it doesn't matter what DVD you throw in as long as your player is region free and your display understands the 50/60Hz refresh rates. :)
     
  5. kevenh

    kevenh
    Standard Member

    Joined:
    Jul 3, 2002
    Messages:
    342
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    19
    Location:
    Royal County Of Berks...
    Ratings:
    +0
    Thanks for correcting my 'lazy' response.
    Whats the 575 you're on about though :)
     
  6. Greg Hook

    Greg Hook
    Moderator & Reviewer

    Joined:
    Nov 25, 2001
    Messages:
    20,379
    Products Owned:
    1
    Products Wanted:
    1
    Trophy Points:
    166
    Location:
    In a secret location with Jennifer Lawrence
    Ratings:
    +7,233
    Thread moved to hardware forum.

    Greg

    Edit: Not really sure which forum is best suited for this thread. Moved to DVD player forum. Please move it elsewhere if it suits another forum better.
     
  7. StooMonster

    StooMonster
    Well-known Member

    Joined:
    Nov 20, 2002
    Messages:
    4,970
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    106
    Location:
    Kent
    Ratings:
    +314
    Furthermore, movies are stored as progressive YUV at 24fps on NTSC DVDs and 25fps on PAL DVDs. The player converts NTSC 24fps to 60 fields per second through a process called 3:2 pull-down; PAL uses 2:2 pull-down to create 25fps. This results in NTSC's "3:2 judder" or PAL's 4% speed up of movies.

    As well as resolution differences between PAL (720x576 pixels) and NTSC (720x480 pixels) discs; the audio is different, where PAL audio has to be adjusted down an octave or so to adjust for 4% speed up.

    All quite simple really. ;)

    StooMonster
     
  8. Reiner

    Reiner
    Active Member

    Joined:
    Jul 16, 2000
    Messages:
    3,315
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    61
    Location:
    Germany
    Ratings:
    +13
    Sorry, that should have read 525/60. I actually typed both and then edited all to 575 ... :blush:

    525 and 625 refer to the scanning lines of NTSC and PAL respectively, though the visible lines are only around 480 and 576.

    Allowable picture resolutions are:
    MPEG-2, 525/60 (NTSC): 720x480, 704x480, 352x480
    MPEG-2, 625/50 (PAL): 720x576, 704x576, 352x576

    Reference: http://www.dvdreview.com/faq/dvdfaq.shtml (Chapter 3.4.1)

    .. to create 50fps.
     
  9. Reiner

    Reiner
    Active Member

    Joined:
    Jul 16, 2000
    Messages:
    3,315
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    61
    Location:
    Germany
    Ratings:
    +13
    A bit off-topic and I tend to disagree a bit in case progressive should mean a complete picture or frame.

    On DVD one frame is actually stored as two half-frames, thus for interlaced output you just display one.
    But if the PS flag is set, the player will put both half-frames together via a process called interweaving (or interleaving).
    Thus the storage isn't progressive but the output is. Ok, sorry, I am nit-picking here ...

    That said a PS picture from DVD is much better than an interlaced one, no matter how it's actually stored. :smashin:
     
  10. shodan

    shodan
    Distinguished Member

    Joined:
    Dec 11, 2001
    Messages:
    10,115
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    166
    Location:
    shoeburyness
    Ratings:
    +4,400
    NTSC...


    Never
    Twice
    Same
    Colour
     
  11. TommyVecetti

    TommyVecetti
    Active Member

    Joined:
    Feb 10, 2003
    Messages:
    1,763
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    66
    Location:
    uk
    Ratings:
    +95

    Of course watching progressive video shot material would essentially be a bad thing. Since video is recorded with interlaced frames. You know, stuff like Eastenders The Bill etc.
     

Share This Page

Loading...