Shooting slow mo footage on the FX1 at DVinfo.net

Tim Davison · September 9th, 2009, 07:38 AM

How is this best achieved. i think I am right that the FX1 only shoots at 25p/30p but I have heard that it is possible to overcrank to 60p in post-production. Is this true and, if so, how does this software work as surely the camera has not shot enough fps?

Khoi Pham · September 9th, 2009, 07:57 AM

Your best with that camera is 1080 60i.
It doesn't have 720 60P.

Tim Davison · September 9th, 2009, 08:28 AM

Thank you Khoi. Can you do get a better frame rate in post production then? Am I right in thinking that 1P (frame) = 2i (fields)?

Khoi Pham · September 9th, 2009, 08:51 AM

yeah 1 frame is 2 fields when you are shooting 60i, (interlaced) the more fields or frames/sec the better the slomo will be, since the FX1 does not do 60P, you are best using 1080 60i instead of 24P or 30P (progressive), the only way you can make more frame/sec in post is to shoot 60i and deinterlaced that footage and take it into a 24P timeline project and change the speed to 40% and that will give you good slomo, but this assuming that you shoot normally in 24P and know what kind of shot you will be using for slomo in order to change the frame rate to 60i.

Adam Gold · September 9th, 2009, 02:20 PM

Note that the FX1 doesn't do any form of P.

Tom Hardwick · September 11th, 2009, 12:53 AM

You've presumably got a PAL FX1 Tim, so I'd ignore the 60i talk, it just makes the camera less light sensitive and the slo-mo less fluid.

Best thing (in my view) is to shoot at the default 50i, that way your camera records everything that happens in front of the lens. If you shoot at 1/100th sec shutter speed, you only capture half of everything that happens, and any slo-mo extrapolation is going to have to work that much harder at smoothing the footage.

And Adam's right - avoid the silly pseudo-progressive settings on the FX1, they'll just spoil your footage.

tom.

Marcus Martell · September 11th, 2009, 10:29 AM

Hola Tom, i didn't get if u suggest or not to put the shutte at 1/100 (sorry 4 the misunderstood but sometimes english language foe me.....lol)
thx

Tom Hardwick · September 11th, 2009, 10:36 AM

Best thing (in my view) is to shoot at the default 1/50th second shutter speed if you want the smoothest slow motion.

Marcus Martell · September 11th, 2009, 11:08 AM

Hola Tom, i guess to get a good slow -mo on a day light shoot is ok 1/1oo th speed right?

Let me know

Tom Hardwick · September 11th, 2009, 11:16 AM

Use 1/100th sec shutter speed if you want jerkier slo-mo. Remember that when you shoot at 1/100th sec you only capture half real time, and slo-mo programs need to interpolote frames, so don't give them less info to start with.

Dimitris Mantalias · September 13th, 2009, 03:22 PM

We are working the slo-mo always in post-production. We of course always try to shoot in 50 shutter but to have smooth slow motion, we are using either the Time Warp effect from Premiere or the Twixtor plugin. Both of them have their advantages and disadvantages but they create super smooth movement, even in extremely low speeds. Regarding your question about how the software is working, the answer is, morphing! The software actually creates the in-between frames with morphing techniques. The most serious downside is of course the rendering times. If for example you're working with HDV, 15 minutes of Time-Warped footage need at least 6 hours using a Quad-Core.

Tim Davison · September 22nd, 2009, 07:08 AM

Quote:

Originally Posted by Khoi Pham

Your best with that camera is 1080 60i.
It doesn't have 720 60P.

Sorry for basic question but why would you film in 720 when you can film in 1080?

Jim Snow · September 22nd, 2009, 11:28 AM

Are there any frame smoothing / slow mo add-ins for Vegas Pro?

Tim Davison · September 23rd, 2009, 03:18 AM

How does Twixtor Express compare with Twixtor Pro? I only want to use it for slowing down clips and therefore not too fussed with any additional effects...

Tim Davison · September 23rd, 2009, 03:42 AM

Quote:

Originally Posted by Dimitris Mantalias

We are working the slo-mo always in post-production. We of course always try to shoot in 50 shutter but to have smooth slow motion, we are using either the Time Warp effect from Premiere or the Twixtor plugin. Both of them have their advantages and disadvantages but they create super smooth movement, even in extremely low speeds.

What are the main disadvantages of Twixtor, is it just rendering times?

September 9th, 2009, 07:38 AM	#1
Tim Davison Regular Crew Join Date: Jan 2009 Location: London, England Posts: 183	Shooting slow mo footage on the FX1 How is this best achieved. i think I am right that the FX1 only shoots at 25p/30p but I have heard that it is possible to overcrank to 60p in post-production. Is this true and, if so, how does this software work as surely the camera has not shot enough fps?

September 9th, 2009, 07:57 AM	#2
Khoi Pham Major Player Join Date: Nov 2004 Location: Dallas Posts: 747	Your best with that camera is 1080 60i. It doesn't have 720 60P. __________________ Khoi Pham www.proeditproductions.com

September 9th, 2009, 08:51 AM	#4
Khoi Pham Major Player Join Date: Nov 2004 Location: Dallas Posts: 747	yeah 1 frame is 2 fields when you are shooting 60i, (interlaced) the more fields or frames/sec the better the slomo will be, since the FX1 does not do 60P, you are best using 1080 60i instead of 24P or 30P (progressive), the only way you can make more frame/sec in post is to shoot 60i and deinterlaced that footage and take it into a 24P timeline project and change the speed to 40% and that will give you good slomo, but this assuming that you shoot normally in 24P and know what kind of shot you will be using for slomo in order to change the frame rate to 60i. __________________ Khoi Pham www.proeditproductions.com

September 9th, 2009, 08:28 AM	#3
Tim Davison Regular Crew Join Date: Jan 2009 Location: London, England Posts: 183	Thank you Khoi. Can you do get a better frame rate in post production then? Am I right in thinking that 1P (frame) = 2i (fields)?

September 9th, 2009, 02:20 PM	#5
Adam Gold Inner Circle Join Date: Jan 2007 Location: Woodinville, WA USA Posts: 3,467	Note that the FX1 doesn't do any form of P.

September 11th, 2009, 12:53 AM	#6
Tom Hardwick Inner Circle Join Date: Mar 2003 Location: Billericay, England UK Posts: 4,711	You've presumably got a PAL FX1 Tim, so I'd ignore the 60i talk, it just makes the camera less light sensitive and the slo-mo less fluid. Best thing (in my view) is to shoot at the default 50i, that way your camera records everything that happens in front of the lens. If you shoot at 1/100th sec shutter speed, you only capture half of everything that happens, and any slo-mo extrapolation is going to have to work that much harder at smoothing the footage. And Adam's right - avoid the silly pseudo-progressive settings on the FX1, they'll just spoil your footage. tom.

September 11th, 2009, 10:29 AM	#7
Marcus Martell Trustee Join Date: Nov 2008 Location: spain Posts: 1,202	Hola Tom, i didn't get if u suggest or not to put the shutte at 1/100 (sorry 4 the misunderstood but sometimes english language foe me.....lol) thx

September 11th, 2009, 10:36 AM	#8
Tom Hardwick Inner Circle Join Date: Mar 2003 Location: Billericay, England UK Posts: 4,711	Best thing (in my view) is to shoot at the default 1/50th second shutter speed if you want the smoothest slow motion.

September 11th, 2009, 11:08 AM	#9
Marcus Martell Trustee Join Date: Nov 2008 Location: spain Posts: 1,202	Hola Tom, i guess to get a good slow -mo on a day light shoot is ok 1/1oo th speed right? Let me know

September 11th, 2009, 11:16 AM	#10
Tom Hardwick Inner Circle Join Date: Mar 2003 Location: Billericay, England UK Posts: 4,711	Use 1/100th sec shutter speed if you want jerkier slo-mo. Remember that when you shoot at 1/100th sec you only capture half real time, and slo-mo programs need to interpolote frames, so don't give them less info to start with.

September 13th, 2009, 03:22 PM	#11
Dimitris Mantalias Major Player Join Date: May 2009 Location: Arta, Greece Posts: 342	We are working the slo-mo always in post-production. We of course always try to shoot in 50 shutter but to have smooth slow motion, we are using either the Time Warp effect from Premiere or the Twixtor plugin. Both of them have their advantages and disadvantages but they create super smooth movement, even in extremely low speeds. Regarding your question about how the software is working, the answer is, morphing! The software actually creates the in-between frames with morphing techniques. The most serious downside is of course the rendering times. If for example you're working with HDV, 15 minutes of Time-Warped footage need at least 6 hours using a Quad-Core.

September 22nd, 2009, 11:28 AM	#13
Jim Snow Trustee Join Date: Mar 2009 Location: Santa Clara, CA Posts: 1,104	Are there any frame smoothing / slow mo add-ins for Vegas Pro?

September 23rd, 2009, 03:18 AM	#14
Tim Davison Regular Crew Join Date: Jan 2009 Location: London, England Posts: 183	How does Twixtor Express compare with Twixtor Pro? I only want to use it for slowing down clips and therefore not too fussed with any additional effects...