Pixel aspect ratio...PC or DVD? (Sony Vegas)

Discussion in 'Professional Video Production' started by culture_mind, Sep 11, 2007.

  1. culture_mind

    culture_mind Guest

    Hello everyone,

    I'm about to start compositing various short videos and lots of
    photographs into a "holiday video" to distribute to friends. This time
    around, I've chosen to use Sony Vegas (ver 7) solely so as to get a
    feel for a non-adobe interface for once (for large / complex
    compositions, the AfterEffects interface eventually becomes the
    embodiment of "messy-ness" imho).

    In essence: I cannot decide what project properties to use.

    In the past, I was working exclusively for creating small compositions
    for pc playback, and would always use an arbitrary canvas size
    (320x240, 640x480 etc...), the straight 1:1 pixel ratio and an xvid
    compression. Most of those small clips were for distribution via a
    website etc.

    Now I'm flirting with the idea (the source material can support it) of
    working on a PAL resolution and aiming for a composition that will be
    released to DVD. However, I realised that the pixel aspect ratio for
    PAL (dv) is 1.0926 (after previewing a few test clips exported
    as .avi).

    Initially I want to distribute the video as an .avi file (xvid) for
    playback from a pc but I would also like to have the option to create
    a DVD.

    My question:

    What resolution / settings would you suggest I use? Shall I work on
    PAL Standard or a custom straight-to-pc format? If I use PAL standard,
    my composition will include several photographs / stills / text. Will
    that be scaled properly if I decided to export to .avi with a
    different pixel aspect ratio?

    Thanks in advance,
    culture_mind, Sep 11, 2007
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  2. culture_mind

    Shak Guest

    You better use uncompressed AVI with 720x576 pixels resolution from
    this u can export u r clips to nearly every format.(from broadcast to
    mobile clips)
    Shak, Sep 11, 2007
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  3. culture_mind

    Mike Kujbida Guest

    Uncompressed AVI is overkill for something like this.
    Set your project properties (File - Properties) to PAL DV (720x576,
    25.000 fps) and render to this same template.
    Using this as a preset allows you to do a later encode to any format you
    The quality loss with this template will be minimal as the encoder in
    Vegas is very good.
    Don't worry about Pixel; Aspect Ratio as Vegas automatically adjusts any
    image to the project properties, whatever they may be.

    You didn't say whether you have DVD Architect or not.
    If you do, let me know how long the project is and I'll give you a
    template for DVD authoring.
    Also, I'd recommend downloading all of Edward Troxel's free newsletters.
    Click the "Newsletter Archive" link on
    Vol. 1 #8 has an article titled "Creating a Motion Slide Show with
    Pan/Crop " that should interest you in adding that little bit of "oomph"
    to your slide show.

    Mike Kujbida, Sep 11, 2007
  4. culture_mind

    culture_mind Guest

    Thanks Mike, the link to jetdv.com was excellent.

    Erroneously perhaps, I chose to use a simple "multimedia" resolution
    of 640 x 480 (at 25fps) since the video will (almost certainly) be
    distributed and played back on a PC (perhaps a 320x240 version for
    internet playback using a flash player, we'll see...). Note that the
    video will eventually be only 5 to 7 minutes long.

    I'm wondering, changing the size back to 720x576 (which is sound
    advice), will it recalculate the positions of the various keyframed
    elements? I used the track motion screen to modify the position over
    time for several events (mainly pics and some text) to slide / move

    I don't have DVD architect but now I admit I'm curious :) Perhaps
    after I finish the composition I'll experiment with outputting to DVD.

    culture_mind, Sep 14, 2007
  5. culture_mind

    Mike Kujbida Guest

    Angelos, my guess is that your project properties (File - Properties)
    are set to 720 x 576 and that you set your output size to 640 x 480.
    If that is indeed the case, then changing the size back to normal PAL DV
    won't affect anything.

    Mike Kujbida, Sep 14, 2007
  6. culture_mind

    Jukka Aho Guest

    culture_mind wrote:

    The aspect ratio for 4:3 "PAL" DV material is 768/702, or 128/117

    The aspect ratio for 4:3 "PAL" DVD material is the same.
    Jukka Aho, Oct 8, 2007
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