playing back two videos at the same time

Discussion in 'Amateur Video Production' started by Brian, May 16, 2013.

  1. Brian

    Brian Guest

    Does anyone know of a method or program that will allow me to have two
    screens side by side and play two video files at once. I am looking at a
    way of comparing video qualities when trying different bit rates etc.
    Brian, May 16, 2013
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  2. Get a second screen and player and play them at the same time. Hah. Possibly
    could find two players that would start off the same remote control.

    Gary Eickmeier
    Gary Eickmeier, May 16, 2013
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  3. Brian

    Brian Guest

    What I was meaning was to use my computer that has a single screen and have
    two videos playing at the same time side by side on the screen.
    Brian, May 16, 2013
  4. You could do a split-screen effect in Vegas, with the two 1/2-screen
    samples side-by-side, rendered using a high data-rate file type such
    as 50Mbps MP4 (to retain the image characteristics of the two samples
    when rendered), but FAR easier would be to synch. the two samples one
    above the other on the timeline, open both tracks for viewing, and
    switch on/off the upper track while viewing (either frame-by-frame,
    or in motion) to compare them. Vegas is convenient for this since the
    switching is not a menu item, but a simple one-button click on the
    on/off switch within the track header on the left.
    David Ruether, May 16, 2013
  5. Brian

    Brian Guest

    Thanks for your suggestions David but in this case I want to compare the
    videos after they have been rendered.
    I want to check the quality of two videos that have been rendered at
    different video bit rates.
    Brian, May 16, 2013
  6. I assumed as much...;-) So, render at the various test bit rates, import
    the resulting files into Vegas, place then one under another on as many
    tracks as it takes, synch. them all vertically to the same frame in all,
    enable all the tracks, label what track contains what in the space in
    header at the left end of the track (if you want...), and proceed to
    compare either by looking at them frame-by-frame, at sample frames, or
    by playing the tracks, switching tracks on/off to change what is being
    compared with what. Simple, huh, and it's what I described earlier...;-)
    David Ruether, May 16, 2013
  7. Brian

    Brian Guest

    Sorry David. I assumed that you misunderstood what I wanted to do as in
    most cases a video on the time line is waiting to be rendered.
    I can see the advantages of having two computer monitors then one screen I
    could have the vegas controls and on the other screen I could have a full
    screen image of the movie and be able quickly enable and disable tracks.
    Maybe there is a shortcut in Vegas for this.

    The only problem with your suggestion is that to see the quality of the
    video then I would have to play it back at the highest display and not
    having the latest high power computer could cause delays and jumps in the
    video. However comparing it frame by frame would work. The only thing I
    would not be able to check is for video noise that would show up when the
    video was played back rather than comparing frames.
    I have in the past taken a snap shot of a frame for each video the is at
    different bit rates but in doing so it could reduce the picture given a
    false display of the picture quality.

    What would be useful is the split screen method where you have half the
    original picture on the left and the enhanced picture on the right which
    some photo editors do. But I don't think this is possible in Vegas Pro.

    Thanks for the suggestions they are worth trying.
    Brian, May 17, 2013
  8. Ah - but I often do such comparisons, so it is an "ordinary" thing
    to do for me...;-)
    There is. I do run two 1920x1200 monitors off a single video card,
    and in Vegas, the little "monitor" button over the preview window
    places a full-resolution preview window on the second monitor,
    which is *VERY* handy during editing for seeing what effect image
    modifications are having. I don't know how anyone could do without
    this unless they use a good TV (and one that doesn't have auto-black
    or other auto picture controls that would confuse one while adjusting
    picture characteristics while editing...).
    Vegas has another feature that can help: RAM-previewing. It doesn't
    give you a lot of time (which depends on the amount of RAM you have
    in your computer, and on how much of it you have assigned to previewing
    from within Vegas).
    If you grab a frame in Vegas using the appropriate button (which
    is also over the small preview window), be sure to set previewing
    quality to "Best, Full" first, which provides a 1920x1080 still
    size (and also full-resolution/full-quality previewing on the
    second screen). RAM-previewing can help here if the computer is
    not up to showing full-quality/full-res previews with effects
    and transitions in place but not yet rendered...
    Actually, it is (there is another button over the preview window
    that does this...;-). Vegas has MANY things in it that I've never
    gotten to, and probably never will - but the above are useful to
    me, so.....;-)
    You're welcome!
    David Ruether, May 17, 2013
  9. Brian

    Brian Guest

    Hi David.
    It's a good thing that you have a good memory of all the extra features
    that Vegas has to offer.
    Some things I think I will never use such as lens flair but it comes in
    handy such as doing a transition for pop concert which looks better with
    bight lights flashing now and then.

    My computer is in a corner of the room so not much room for another
    computer monitor but i'm due to temporary clear furniture so that house
    repairs can be made so another monitor might be possible with some
    To see what the video looks like I have to compile the video into a wmv 3
    mbps video file then play it back on my TV.
    While watching it I full up a note page or more with things I need to
    change. Another reason for this is that I can view a higher quality picture
    when its rendered as my computer has just a dual core 2.x Mhz processor
    which a slow by todays standards.
    Brian, May 17, 2013
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