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Activity Forums VEGAS Pro mpg processing speed

  • mpg processing speed

    Posted by Ivan Bald on February 12, 2008 at 4:43 pm

    Hi,

    I believe I’m doing something wrong and the solution is probably very simple, so help please : )

    My problem is the rendering speed of mpg files in Vegas. I have around 50 clips witch are all mpeg2 (same resolution, same codec, same all) in the timeline, when I render it in order to get a single large mpeg2 file it takes around 40 minutes.
    I have been doing so for a few months now, until yesterday I discovered software “MPEG video wizard DVD” which performs the same task (50 clips to 1 big) in 28 seconds !!!
    This is great, but I would prefer to stick to Vegas for many other reasons.
    Now I’m pretty sure that I have been doing something wrong with rendering in Vegas. Is there any parameters that I could set when creating (joining) mpeg2 files so Vegas just “sticks” them together without re-rendering (I’m 99% sure it’s doing that) ?

    These options are used when rendering in Vegas:
    Save as type: MainConcept MPEG-2
    Template: DVD-PAL

    Thanks in advance

    Ivan Bald replied 18 years, 3 months ago 2 Members · 4 Replies
  • 4 Replies
  • Mike Kujbida

    February 12, 2008 at 5:13 pm

    Until recently, Vegas did not have a “smart render” capability.
    Everything always had to be re-rendered (even if it was just straight cuts) which, as you know, takes time and affects the quality 🙁
    That’s why folks were using programs like MPEG video wizard DVD of Womble or VideoReDo – to get around this limitation.

    Vegas Pro 8 added “smart rendering” support for HDV 1080i and XDCAM.
    What wasn’t documented is that, under the right circumstances, this feature also works for standard def MPEG files.
    As long as your MPEG files were all encoded with the same bitrate, you should be able to smart render and not have Vegas recompress anything.
    Note that I said “should be able to” because, if the stars aren’t perfectly that day, it may not work.
    I’ve done it and it’s worked for me but other users haven’t had much luck.
    Most of my MPEG encoding is done according to templates that I’ve saved.
    That way, I know what the encoding parameters were and can duplicate them easily.

  • Ivan Bald

    February 12, 2008 at 5:20 pm

    Luckily all my clips are also done with the same template, so the bitrate is the same. The only problem on the horizon is that I’m using Vegas 7 : (

  • Mike Kujbida

    February 12, 2008 at 5:29 pm

    The only problem on the horizon is that I’m using Vegas 7 : (

    Sounds like a good reason for the upgrade 🙂

    Seriously though, I know you said you prefer Vegas but unfortunately it’s not always the right tool for the job.
    Unless there’s a really good reason, I’d go with MPEG video wizard DVD for jobs like this.

  • Ivan Bald

    February 12, 2008 at 7:07 pm

    I agree, asking for an all-in-one solution is never feasible.

    But combining Vegas and Womble can indeed provide amazing results and speed.
    I just stumbled upon a great tool which should come in handy to everyone looking to speed up mpeg creations. It’s a utility which converts EDL file to WOMBLE project file. So just export your Vegas timeline (save as) to an EDL file, convert it and load in WOMBLE. Works great.
    Utility can be found at:
    https://www.womble.com/tools/edl2wbp.zip

    All in all good solution till smart renderings get smarter : )

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