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Activity Forums VEGAS Pro Help with 60i/24pa slow-mos!

  • Help with 60i/24pa slow-mos!

    Posted by Marc Istook on September 19, 2007 at 8:01 am

    I’ve tried some searching but can’t seem to find the answers I’m looking for and was hoping someone out there might be able to help.

    I recently shot some footage of horses in action for a promotional piece on veterinary medicine. I used the DVX-100, set to 24pa for most of the footage. But some of the shots I intended to use as slow-mos… for those, I shot at 30/60i.

    My timeline is a 23.976 timeline for output to a 24p DVD and the web. It’s my understanding that if you slow the 30/60i footage down to 40%, you should get crystal clear slow-mos. So here are my questions:

    1) Vegas is set to remove the pulldown (so my 24pa footage will fit perfectly on a 24p(23.976) timeline). When I shot the b-roll, the 30/60i footage is mixed intermittently with the 24pa footage. It would take me awhile to go log every specific shot and digitize each one separately. Instead, I’ve just digitized all the b-roll as one long .avi file. Will I run into problems if the 30/60i footage is smack in the middle of a file that contains 24p footage? In other words, if I use the trimmer to select a portion of video that’s 30/60i, will Vegas try to remove the non-existent pulldown in that segment of the footage, and if so, what problems will that cause?

    2) It’s my understanding that the crystal clear slow-mos result from each frame of the 24p timeline taking a field from the 40% speed 60i footage and creating an entire frame from that field, thus giving the clean slow-mo. So should my interlace settings for the project be none, blend or interpolate?

    Thanks for your time and help!

    – Marc

    Marc Istook replied 18 years, 7 months ago 3 Members · 17 Replies
  • 17 Replies
  • Douglas Spotted eagle

    September 19, 2007 at 12:35 pm

    you won’t run into any problems mixing the two, no.
    How did you “digitize?” The footage was already digital when you Xferred it to your HDD, so I want to be clear that you merely did a firewire Xfer, yes?
    Use the 23.976 project setting, let Vegas manage the i to p for you.

  • Marc Istook

    September 19, 2007 at 3:47 pm

    Yep, I firewired the footage in.

    I’m not sure I follow what you mean by “let Vegas manage the i to p for you.” How else would I do it? I merely need to know the project de-interlace settings and whether the track media needs to be set to resample or not. I’m guessing it’s force resample, blended de-interlacing, but wondered what other people out there have had success with.

    Thanks,
    Marc

  • Douglas Spotted eagle

    September 19, 2007 at 4:22 pm

    If you set up a 24p project prior to editing, Vegas will manage *everything* correctly for you. It’s when you edit on a 60i timeline and then change the project properties to 24p that you’ll run into issues.
    You don’t need to force resample, blend/interpolate, etc.
    Choosing blend/interpolate is entirely relevant to the kind of footage you shot, and you’re best bet is to allow Vegas to manage it for you based on the Project Properties.

  • Marc Istook

    September 20, 2007 at 3:54 am

    You say to let Vegas manage it based on the settings in the Project properties. That’s been my question all along — what should those settings be?? There’s not a default blend/interpolate/none de-interlace setting for timelines — the setting simply carries over from what you’ve previously used. Hence I need to know what that setting should be to get the proper effect. I’ve played around somewhat using blend/interpolate/none and have noticed a difference between each setting, so I shouldn’t just ignore it. I just wonder what someone else who’s done this before has found to give the best results.

  • Douglas Spotted eagle

    September 20, 2007 at 4:06 am

    There’s not a default blend/interpolate/none de-interlace setting for timelines — the setting simply carries over from what you’ve previously used

    Not so. Before putting any media on the timeline;
    File/Project Properties/NTSC DV 23.976 or NTSC DV Widescreen 23.976.
    All properties will fall into place if you use one of these two templates.
    I’ve got a couple articles on the subject found on the VASST site.
    or, you can spend time with the highest motion sequence you’ve got, using 60i, 24p templates, with various deinterlace settings, or experiment with Mike Crash’ deinterlacer, and you’ll have answers of your own.

  • Marc Istook

    September 20, 2007 at 4:10 am

    I think you’re mistaken.

    There is not a default de-interlace setting on Vegas’s 24p timelines. And I’ve noticed that the de-interlace setting DOES matter. So I’m merely asking other people which setting they’ve experienced the most success with so that I don’t have to spend a lot of time testing different settings, outputting to a tape to view on a monitor, etc. etc. etc. Telling me that all properties will simply “fall into place” isn’t effective, because the properties aren’t default and it matters what the properties are set to.

  • Douglas Spotted eagle

    September 20, 2007 at 4:23 am

    Yes, the deinterlace method does matter, as I mentioned earlier. High motion, you’re going to want to interpolate, low motion, blend. Or, you can use Mike Crash’ plugin, which will use adaptive motion compensation, and it does a good job.
    The rest of the settings set themselves when you set up your project.
    Or, you can test it yourself, as it seems you’re not wanting to accept what I’ve offered.

  • Douglas Spotted eagle

    September 20, 2007 at 4:31 am

    Failed to mention, you can also frame-serve to a VDub plug that does a very good job (better than Vegas) but since you’re mixing 60i and 24p without a 24p conform first, I’m not sure what your results would be. Mixing multiple framerates is something we do on a regular basis, our training DVDs are shot with a blend and output as 24p in most situations.
    you might also prefer the same answer explained differently by David Jimerson, he wrote a very well-done 24p article for Vegas, if you can find it around the web. I don’t have the link on this ‘puter.

  • Marc Istook

    September 20, 2007 at 4:49 am

    It’s not that I didn’t want to accept what you offered. I do appreciate your help. Merely, I asked some specific questions about settings that I didn’t feel like you answered. I’ve read tutorials on this before but did some searching and couldn’t find them. I remember those tutorials mentioning specific de-interlace settings, which is why I was hoping for more specificity. Again, thanks for your help. 🙂

  • Jerry Waters

    September 22, 2007 at 10:56 am

    Don’t be so stubborn, Marc. There is probably no one on this planet that knows more about Vegas or professional DVDs than DSE. If you’ll do what he says, it will work. If you don’t, it probably will not.

    What he is saying is correct. Set your Vegas properties for what you want to finish with. Read the list carefully. All the 24p ones are 23.976. Then put whatever you want on the timeline and tell Vegas to render it out to those final properties. Check those when rendering the mpg2 file. Be sure they are the same. Vegas makes it all come out OK.

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