Looking for a good slomo trick for 30p footage at DVinfo.net

Steve Siegel · December 26th, 2008, 03:30 PM

I have a question regarding slow motion in Premiere. I use Premiere Pro 2.0 without After Effects, and have no idea what new solutions may be available.
I want to display bird flight in slow motion. Fortunately or unfortunately, the footage is all in 30p (Canon XLH1, HD). Speed control in Premiere always gives those ghosty intermittent images, which are unacceptable. What would be ideal, would be an effect that just displays each 30p frame longer than 1/30th of a second (1/24th, 1/20th, whatever) without any interpolation. The eye couldn't tell. Is there such a thing?
I know that the usual way to do this is to shoot in 60i, treat each field as a frame, and go from there. But that gives ghosting too, and anyway, you lose half of your resolution, not a great deal when trying to get high definition. Thanks.

Lloyd Coleman · December 26th, 2008, 03:57 PM

I believe in PPro 2.0 if you right click on the footage in the timeline and ucheck 'Frame Blend' Premiere will just repeat frames without creating the ghosting. Try it and see if that is what you are looking for. Your slow motion will not have the ghosting, but it will be less fluid.

Graham Hickling · December 27th, 2008, 02:21 AM

Avifrate is a simple utility that lets you re-specify whatever frame rate you want for an avi file: AM Software | Freeware AVI Frame rate changer

Alternatively, a simple avisynth script with the "Selectevery" command can be used to duplicate each frame multiple times, so that you could have a file that is still 30fps, but the frames are played back as 1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4 etc.

Mike McCarthy · December 27th, 2008, 03:39 PM

You could reinterpret the framerate in Premiere as well, but regardless, you are going to have to deselect "Frame Blending" for any clip you want to be in slowmotion without "ghosting"

Steve Siegel · December 27th, 2008, 09:19 PM

Lloyd and Mike,
How stupid of me. Of course the problem was frame blend. I didn't even think to turn it off. Thanks for setting me straight.

George Sickler · January 2nd, 2009, 01:24 PM

Premiere fixed the slo mo in CS3. If you are looking for a great slo mo, you will not find it in Prem 2.

Edius has an incredible Slo Mo. You can download a trial, and get what you need out of it.

You could render your HDV file out to a full frame avi, and then try Slo Mo, this will get better results too.
George

December 26th, 2008, 03:30 PM	#1
Steve Siegel Major Player Join Date: Nov 2001 Location: Albuquerque, New Mexico, USA Posts: 839	Looking for a good slomo trick for 30p footage I have a question regarding slow motion in Premiere. I use Premiere Pro 2.0 without After Effects, and have no idea what new solutions may be available. I want to display bird flight in slow motion. Fortunately or unfortunately, the footage is all in 30p (Canon XLH1, HD). Speed control in Premiere always gives those ghosty intermittent images, which are unacceptable. What would be ideal, would be an effect that just displays each 30p frame longer than 1/30th of a second (1/24th, 1/20th, whatever) without any interpolation. The eye couldn't tell. Is there such a thing? I know that the usual way to do this is to shoot in 60i, treat each field as a frame, and go from there. But that gives ghosting too, and anyway, you lose half of your resolution, not a great deal when trying to get high definition. Thanks.

December 27th, 2008, 03:39 PM	#4
Mike McCarthy Major Player Join Date: Oct 2007 Location: Northern California Posts: 517	You could reinterpret the framerate in Premiere as well, but regardless, you are going to have to deselect "Frame Blending" for any clip you want to be in slowmotion without "ghosting" __________________ For more information on these topics, check out my tech website at www.hd4pc.com

January 2nd, 2009, 01:24 PM	#6
George Sickler Regular Crew Join Date: Feb 2008 Location: Colorado Posts: 83	Prem Pro 2 Slo Mo, No Go.. Premiere fixed the slo mo in CS3. If you are looking for a great slo mo, you will not find it in Prem 2. Edius has an incredible Slo Mo. You can download a trial, and get what you need out of it. You could render your HDV file out to a full frame avi, and then try Slo Mo, this will get better results too. George

December 26th, 2008, 03:57 PM	#2
Lloyd Coleman Major Player Join Date: Oct 2003 Location: Salt Lake City, UT Posts: 256	I believe in PPro 2.0 if you right click on the footage in the timeline and ucheck 'Frame Blend' Premiere will just repeat frames without creating the ghosting. Try it and see if that is what you are looking for. Your slow motion will not have the ghosting, but it will be less fluid.

December 27th, 2008, 02:21 AM	#3
Graham Hickling Trustee Join Date: May 2004 Location: Knoxville, Tennessee Posts: 1,669	Avifrate is a simple utility that lets you re-specify whatever frame rate you want for an avi file: AM Software \| Freeware AVI Frame rate changer Alternatively, a simple avisynth script with the "Selectevery" command can be used to duplicate each frame multiple times, so that you could have a file that is still 30fps, but the frames are played back as 1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4 etc.

December 27th, 2008, 09:19 PM	#5
Steve Siegel Major Player Join Date: Nov 2001 Location: Albuquerque, New Mexico, USA Posts: 839	Lloyd and Mike, How stupid of me. Of course the problem was frame blend. I didn't even think to turn it off. Thanks for setting me straight.