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Activity Forums Adobe Premiere Pro 24fps to 30fps Conversion??

  • 24fps to 30fps Conversion??

    Posted by Todd Terry on February 5, 2007 at 5:31 pm

    Hi gang….

    Hopefully someone here will tell me that I can do this (and how!), or either just tell me that it can’t be done….

    I have standard definition video shot 24F with Canon XLH1.

    I can capture video beautifully, and can edit it beautifully either in a 23.976fps or a 29.97fps project.

    We usually work exclusively in 29.97 projects, and the video looks great, just like telecined film (stepping through the frames we get 3 non-interlaced frames, and the 2 interlaced, just like telecine with a 3:2 pulldown).

    What I would LIKE to do is this: I would like to be able to edit a part of it in a 23.976 project, and then make an AVI that I can use in a 29.97 project (this is because I want to do some rotoscoping via filmstrips on a fair bit of it, I want to draw fewer frames, and I don’t want to have to draw on some of the interlaced frames if I exported the filmstrip in a 29.97 project).

    I have been able to do this, but it doesn’t look good. Basically I can’t come up with any combination of settings that gives my AVI the right “look” when it is brought back into a 29.97 proejct (the 3:2 pulldown look of 3 non-interlaced frames followed by 2 interlaced frames is not preserved). Within my 23.976 project I have tried making AVIs at both 23.976 and 29.97, with every combination of No Fields (Progressive), Upper Fields First, Lower Fields First, and Deinterlaced footage… but still haven’t gotten right right result.

    Is there any way to do this? Or am I just asking too much of Premiere Pro2?

    Thanks much, gang….

    Todd

    Troy Murison replied 19 years, 3 months ago 2 Members · 4 Replies
  • 4 Replies
  • Troy Murison

    February 5, 2007 at 7:18 pm

    You’re right, PPro doesn’t include a tool for placing pulldown into 23.98 footage to get to 29.97. If you have After Effects, it does. Just import your 23.98 clip making sure it’s interpreted properly as far as PAR (and it should have seperate fields setting to none), make a comp by dragging the footage to the ‘create new comp’ icon at the bottom of the project window, then add that comp to the render que. In the render que render settings, enable field rendering (at whatever dominance you need) and then choose a pulldown cadence (usually the last one WWSSW). You’ll notice the frame rate sampling has changed to 29.97- this will be the output frame rate. Make sure you render the whole comp in Time Span setting. Now just set the output settings to whatever format/codec you need and render.

    -Troy Murison
    Seattle, WA

  • Todd Terry

    February 5, 2007 at 7:52 pm

    Thanks Tony….

    I suspected I might not be able to do it in PP2, but just wanted to make sure that I hadn’t missed something.

    We’ll do it in AE, no sweat.

    Thanks much, appreciate the insight.

    Todd

  • Todd Terry

    February 5, 2007 at 7:56 pm

    OOOps… I meant Troy, not Tony. Brain fart, sorry.

    Todd

  • Troy Murison

    February 6, 2007 at 10:18 pm

    I had my own brain fart BTW- PPro does allow for MONITORING of 23.98 footage via FireWire (if your footage/project settings are FW compatible) via the fly-out menu in the monitor window. It allows for inserting either a repeated frame or pseudo 3:2 pulldown. Either one works for monitoring but even not-so-discerning viewers usually notice something a bit odd with the playback, especially using the repeating frame way. But you can use it for basic monitoring on a NTSC monitor before output. But PPro doesn’t allow for proper 3:2 to be inserted for edit to tape or for anything else. It’s really a bummer. Maybe with faster machines/processors available now, Adobe will enable true 3:2 insertion.

    -Tony, er, Troy Murison (believe me, I’ve been called, and even answered to, lots worse!) 🙂
    Seattle, WA

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