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Thread: Slow rendering with Vegas Pro 8

  1. #1

    Default Slow rendering with Vegas Pro 8

    When I render with vegas 8 in HD 1480x1080 or similar, it takes hours to render 30 mins of footage.
    Is this normal?
    Are there any tricks I can use to speed it up?
    I have a dual core, 2.5 gh laptop with 4gb of ram.
    If I use the 640x480 setting it still takes 2 hours.
    Surely you do not have to leave it overnight to render do you?
    cheers.

  2. #2
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    Default

    How long is a piece of string? I all depends on what you (or the processor) is having to cope with. If your source material is being rendered in exactly the same format and you're putting no effects (eg colour grading), transitions, overlays etc, it will whizz through. Anything else will add to the time tremendously.

    One common problem is (accidentally) dragging the opacity down below 100%. This is a real CPU hog.

    2hrs + for a 30 min vid wouldn't necessarily be considered excessive (depending on the factors mentioned above) for a standard def video (which is 720x576) and much more work goes on with HD (as more is involved in decompressing/recompressing the video.

    Give us some more detail about what's on your timeline.

    Make a simple test project where output=source=project settings just with some straight cuts and see how long that takes.
    Tim

  3. #3

    Default RE

    Pretty sure I changed the opacity from 90 to 100%
    Still have 30mins left so cannot check yet.
    I have a 10 second text intro at the start that fades a little onto the movie.
    Sounds right then. just seemed excessive when you first start.
    I mean if you were on a liveaboard it would take all night.
    I will check when it is done and repost if I have left anything out.
    Was just worried that I was stuffing up something big time.
    Cheers

  4. #4
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    Rendering DV is slow.

    Rendering HDV is typically five to ten times slower - thats just the facts - and one reson why I still use DV.

    If you commonly many editing tools and fx then 4 cores is needed for HDV if you edit fast.

  5. #5
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    Quote Originally Posted by seven1970 View Post
    I mean if you were on a liveaboard it would take all night.
    Had to Google that. Understood.
    Tim

  6. #6

    Default

    Just have to live with it then
    Seem to have the settings right
    Yep, liveaboard as in diving for a week away
    Would be easier to just chuck the tapes in a bag and do it all when you get free time.
    Cheers

  7. #7

    Default

    Dint you mean 1440 x 1080, if not perhaps you are transcoding the footage to the new settings so taking longer (1480x1080)

    Opacity as mentioned above is usually the culprit.

    I did a HDV wedding last year on V8 on a Quad core and the render times were not that far of the normal DV rendering times.

  8. #8

    Default

    1440 x 1080
    The opacity is 100%
    Just a slow dual core 2.5ghz laptop
    Using normal DV tapes
    May have to upgrade to a quad core
    Not too many around here in Oz
    So will just have to live with it for awhile
    Thanks for the help

  9. #9

    Default

    Don't sell that dual core short. I have a Intel Quad 6600, 2.4G, 3G of 800 RAM and my last underwater video took 14:42 to render a 46 minute video. So yes, I leave it overnight to do it's work.

    Nothing makes me feel better than pressing the "BURN" button at 8:00pm and coming to look at it about 12 hours later and see this little window that has popped up saying "ULead has encountered a problem and needs to close.....". Now I have to start all over. How about three crashes in one day before it finally stayed on-line and rendered.

    I sometimes wonder if excessive rendering time is a product of my editor or if they are all this way. And I also wonder if I should just get a 3+Gig dual core processor.

  10. #10

    Default

    Sux eh when you are waiting and come back to "that message"
    funny my older "slower" laptop renders quicker than my newer "quicker" one
    the cheapest quad core is around the $6000Au so wont be updating for awhile anyways
    buying a gates housing next week
    so I think that will be more worthwhile that a new quad core
    cheers

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