Ramping - Over/Undercranking with the HVX at DVinfo.net

Go Back   DV Info Net > Panasonic P2HD / AVCCAM / AVCHD / DV Camera Systems > Panasonic P2HD / DVCPRO HD Camcorders

Panasonic P2HD / DVCPRO HD Camcorders
All AG-HPX and AJ-PX Series camcorders and P2 / P2HD hardware.


Reply
 
Thread Tools Search this Thread
Old September 22nd, 2006, 05:22 PM   #1
Major Player
 
Join Date: Jun 2006
Location: St. Pete, FL
Posts: 223
Ramping - Over/Undercranking with the HVX

Does anyone have any shooting/editing ideas on how to smoothly ramp up/down the framerate?

I'd like to shoot at regular speed and seamlessly slow it down. I've tried a few things in FCP, but I'm not satisfied. Should I shoot it all slomo and then use an editing technique (?) to ramp up to normal speed?
Sam Jankis is offline   Reply With Quote
Old September 22nd, 2006, 09:06 PM   #2
Inner Circle
 
Join Date: Apr 2003
Location: Aus
Posts: 3,884
Does anyone have any shooting/editing ideas on how to smoothly ramp up/down the framerate?

U dont, u either have it on or off...
BUT
in editing, depending on ur NLE u can always adjust the speed and finish off on the origianl frame rate..


I'd like to shoot at regular speed and seamlessly slow it down.

((Youd have to record it in slow mot, in FCP ramp it up to whatever woul dbe the ORIGINAL Realtime speed.. the slowly crank it down.. FCP MIGHT not have to interpolate the frames once it hits the overcranked recorded frames.. i think Shake (or was it motion??) does better slowmo that FCP on its own though... ))

I've tried a few things in FCP, but I'm not satisfied. Should I shoot it all slomo and then use an editing technique (?) to ramp up to normal speed?

((yes))
Peter Jefferson is offline   Reply With Quote
Old September 22nd, 2006, 11:55 PM   #3
Inner Circle
 
Join Date: May 2006
Location: Camas, WA, USA
Posts: 5,513
It would be amazingly cool to have a physical frame rate knob on the camera - even if it worked in steps, though continuous would be way cooler. When shooting water, we wanted to record at a few different frame rates. It would have been really nice to just film for a while, tweak, film a bit more, tweak, etc. As it was, we had to stop recording each time and button through the sideways menus.

There's always room for improvement!
__________________
Jon Fairhurst
Jon Fairhurst is offline   Reply With Quote
Old September 23rd, 2006, 04:01 AM   #4
New Boot
 
Join Date: Jun 2004
Location: new York usa
Posts: 22
on film, the best way to do this is to shoot in slow motion at speed rates that are in multiples of pal/or Ntsc rates...if your project is 30FPS, you shoot at 60...
When you accelerate this back to 30, it should look fine. Sometimes this does not work so well. You can frame cut, image by image. In any case, don't forget that a ramp, by the nature of the beast, is an effect, and will look strange. We usually ramp with a three or four speed changes over a second.
Jonathan Lennard is offline   Reply With Quote
Old September 30th, 2006, 03:54 PM   #5
New Boot
 
Join Date: May 2003
Location: Los Angeles, CA
Posts: 8
The tried & true method is to shoot as overcranked (60 fps+) as reasonable & speed up in post. Any NLE should be able to handle that.

If you have standard speed footage and want to slow it down, the Twixtor plugin for After Effects does absolute wonders. It interprets each pixel & does its best to recreate the missing frames. I've used it in projects down to 1/4 speed, and done tests down to 1/50 speed. Still relatively smooth.

Given a choice, though, I'd rather have some 48fps or 60fps footage to make it work right.
Geoff Mark is offline   Reply With Quote
Old October 1st, 2006, 07:09 AM   #6
Regular Crew
 
Join Date: Apr 2006
Location: leeds uk
Posts: 38
Quote:
Originally Posted by Sam Jankis
Does anyone have any shooting/editing ideas on how to smoothly ramp up/down the framerate?
You can use the twixtor plugin to do just that, bearing in mind it's quite a steep learning curve at first but i love it.

www.revisionfx.com/rstwixtor.htm (link to plugin)
www.steadiforum.com/virus7.mov (link to a music vid I used twixtor on)
Matt Burton is offline   Reply With Quote
Old October 1st, 2006, 11:16 AM   #7
Major Player
 
Join Date: Jun 2006
Location: St. Pete, FL
Posts: 223
Quote:
Originally Posted by Matt Burton
You can use the twixtor plugin to do just that, bearing in mind it's quite a steep learning curve at first but i love it.

www.revisionfx.com/rstwixtor.htm (link to plugin)
www.steadiforum.com/virus7.mov (link to a music vid I used twixtor on)
Wow... thanks!
Sam Jankis is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Panasonic P2HD / AVCCAM / AVCHD / DV Camera Systems > Panasonic P2HD / DVCPRO HD Camcorders

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 10:53 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network