dvd-a stereo tracks

Discussion in 'Music' started by ElevSkyMovie, Dec 15, 2003.

  1. ElevSkyMovie

    ElevSkyMovie Supporting Actor

    Joined:
    Jul 28, 2003
    Messages:
    575
    Likes Received:
    0
    If a dvd-audio disc has a stereo track in the video section (video_ts folder), can it be any resolution or is it usually 24/96? This is a separate stereo track than the one in the audio_ts folder, correct?

    thanks.
     
  2. Phil A

    Phil A Producer

    Joined:
    Oct 1, 2000
    Messages:
    3,170
    Likes Received:
    37
    Location:
    Central FL
    Real Name:
    Phil
    I don't believe there is a std. Yes some discs have a provision to get hi-res from the DVD-V. Also some DVD-A players will only output 48k (some one can select on a menu between 48k or 96k) on a DVD-V track. There are discussions such as this as well: http://db.audioasylum.com/cgi/m.pl?f...IX&r=&session=
     
  3. ElevSkyMovie

    ElevSkyMovie Supporting Actor

    Joined:
    Jul 28, 2003
    Messages:
    575
    Likes Received:
    0
    Thanks Phil.

    I just bought Empire by Queensryche on dvd-audio. I assumed it would have a track I could play on my laptop (with a 16 bit soundcard). I'm not sure what the default playback option was, but the volume was compressing a lot, so I assume it was DD or DTS (folding down the surround to stereo). There is a "stereo high-resolution" track on the menu, but it doesn't say what the specs for it are. I know most regular dvd-players can play up to 24/96 from the stereo outputs now, but I didn't know if the labels put in a 16/48 or 16/44.1 track for backwards compatibility or not.

    I guess the answer is it depends on the disc.

    Does anyone know how to reliably know what specs the tracks are in? I don't think my Toshiba 4700 dvd-audio player outputs those numbers on it's display (but I could be wrong).
     
  4. Michael St. Clair

    Joined:
    May 3, 1999
    Messages:
    6,001
    Likes Received:
    0
    A stereo track on the DVD-V side would usually be one of these:

    DD2.0 (192k, 256k, 384k, 448k, possibly other bitrates)
    16 bit PCM at (48 or 96 khz sampling rate)
    24 bit PCM at (48 or 96 khz sampling rate)

    It totally depends on the disc.

    DVD-A supports 44.1 and 88.2 (plus the high-res rates of 176.4, and 192kHz), but I'm unsure about DVD-V...I don't think I've seen a DVD-V disc or section that uses those two rates.
     
  5. John Garcia

    John Garcia Executive Producer

    Joined:
    Jun 24, 1999
    Messages:
    11,571
    Likes Received:
    24
    Location:
    NorCal
    Real Name:
    John
     
  6. ElevSkyMovie

    ElevSkyMovie Supporting Actor

    Joined:
    Jul 28, 2003
    Messages:
    575
    Likes Received:
    0
    The disc packaging doesn't say what's on it. The stereo track I am referring to is in the dvd-video section. When you run it with dvd player software, the menu says it has DD and DTS surround tracks and I quote "high-resolution stereo". That's all it says. I know that specs say that labels can put 24 bit tracks in this section, I just don't know how common it is.

    I am able to get the stereo files to play, and they sound fine. I think they are 16/48. Until they can get a cd layer, it would be nice to have a 16/44.1 track so it can be played on computers.
     
  7. John Kotches

    John Kotches Cinematographer

    Joined:
    Mar 14, 2000
    Messages:
    2,635
    Likes Received:
    0
    Michael,

    You're correct... Only multiples of 48kHz for DVD-Video.

    44.1 and 48k multiples are permitted for DVD-Audio.

    Cheers,
     
  8. LanceJ

    LanceJ Producer

    Joined:
    Oct 26, 2002
    Messages:
    3,168
    Likes Received:
    0
    For a full list of dvd-audio specs, go here:

    Panasonic's dvd-audio site across the Atlantic :^)

    First pick a language, then click on "About dvd technology", then from the list choose "dvd-audio benefits". A separate Flash pop-up will appear; then choose "main specifications".

    As far as a player preventing a 96kHz track from being output, that is concerned with the digital output, and is totally up to the disc's manufacturer/artist. The analog output will be unaffected.

    LJ
     
  9. Phil A

    Phil A Producer

    Joined:
    Oct 1, 2000
    Messages:
    3,170
    Likes Received:
    37
    Location:
    Central FL
    Real Name:
    Phil
  10. ElevSkyMovie

    ElevSkyMovie Supporting Actor

    Joined:
    Jul 28, 2003
    Messages:
    575
    Likes Received:
    0
    I assume there are seperate stereo files in the audio and video section, correct? The audio folder should have a better stereo track than 16/48 I would think.

    As long as the most dvd-audio discs have DD or a 16 bit pcm track, then I can play it on the laptop and not have to buy the cd version of it.
     
  11. Larry Geller

    Larry Geller Supporting Actor

    Joined:
    Jan 10, 2002
    Messages:
    565
    Likes Received:
    2
     

Share This Page