C100: Slo-mo on the C100

Curnsie

Curnsie

Well-known member
Hi
Here is a preview of a video I shot yesterday using the C100 which contains slo-mo gained using the 50i slowed to 50% and up to 25% in some cases on a 25p timeline in FCPx. For me the results are good except for the obviously slightly softer footage when compared to 25p footage from the C100. I reckon if i used After Effects to retime the slo-mo I'd get less jittery results in the jump at around 1.30 which is slowed to 25% - FCPx optical flow gave me weird anomalies. Obviously the ideal camera would be a FS700 for this sort of work but sometimes you have to work with what you've got!


https://vimeo.com/96621904

EDIT: I updated this video adding music and a title at the end - I added Frame Blending in FCPx which helped to remove some of the stuttering in the slowest footage (optical flow just didn't work as the results where not good). I also experimented with slowing the footage down in After Effects using "Frame Mix" frame blending but felt it was only a little better than what FCPx could do. Good results using Timewarp or Twixtor in AE are not possible without a lot of masking and rotoscoping etc. Tbh As I said above, in order to get the sort of superslomo used in this type of video you would be better using a FS700 or similar camera. However, as a basic slo-mo tool, the C100 holds up quite well - I have a GH4 on the way so I can't wait to try its flavour of 96fps.
 
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Not bad at all. The stuff slowed to 25% obviously looks a bit staccato, as it would. Something like twixtor or timwarp would probably deliver smoother results, though it would be a more complicated, more time consuming workflow.

Here in 24p land, I've recently fallen in love with the simple 60i trick in Premiere Pro CC:

1. Import a 60i clip, and do not interpret it in any way. Leave it as is when imported.
2. Drop the clip on a 24p sequence.
3. Right click on the clip in the timeline and change the speed to 40%.

The clip might stutter a bit during playback in Premiere, depending on your computer, but when exported to an encoded file, it looks almost identical to me to 60p clips interpreted to 24p.

Previously, I was doing a much more laborious process with After Effects (taking a 60i file, separating fields, rendering a 60p file, etc). But that took ages. The steps I list above are nearly real-time, and they look great!
 
The premiere workflow sounds very similar to FCPx. I want to try the After Effects method to see if its a vast improvement..
 
Nice shooting! I think the slo-mo turned out great. It gives me a lot more confidence shooting 60i on my camera. Where is this epic location btw?
 
akivisuals said:
Nice shooting! I think the slo-mo turned out great. It gives me a lot more confidence shooting 60i on my camera. Where is this epic location btw?
Click to expand...

Yeah the slo-mo is pretty good!

The location is in the Mourne Mountains in Northern Ireland above a town called Rostrevor. Its in a very picturesque part of the world.
 
Edry said:
Do you have to change the fields? like "upper fields first" or something like that?
Click to expand...

I use ClipWrap to 're-wrap' the footage which then causes FCPx to correctly interpret the footage as "upper fields first" - otherwise you would have to manually select this setting in FCPx if importing the AVCHD directly.
 
Edry said:
Is it the same in premiere?
Click to expand...
Second post of the thread:

drummondb said:
Here in 24p land, I've recently fallen in love with the simple 60i trick in Premiere Pro CC:

1. Import a 60i clip, and do not interpret it in any way. Leave it as is when imported.
2. Drop the clip on a 24p sequence.
3. Right click on the clip in the timeline and change the speed to 40%.

The clip might stutter a bit during playback in Premiere, depending on your computer, but when exported to an encoded file, it looks almost identical to me to 60p clips interpreted to 24p.

Previously, I was doing a much more laborious process with After Effects (taking a 60i file, separating fields, rendering a 60p file, etc). But that took ages. The steps I list above are nearly real-time, and they look great!
Click to expand...
 
groveChuck said:
Second post of the thread:
Click to expand...

So let me see if I get this right.

1. Record in 60i
2. Export to a 24p Timeline in Premiere Pro
3. Do not Interpret in in any way. (so basically when it says to if I want to change the settings, Keep it in 24p)
4. Change speed to 40% ( Can I go slower?)
5. Export in 24p
6. Finished
 
1. Record in 60i
2. Export to a 24p Timeline in Premiere Pro <- drop clip on timeline rather than export
3. Do not Interpret in in any way. (so basically when it says to if I want to change the settings, Keep it in 24p)
4. Change speed to 40% ( Can I go slower?) <- Not unless you use something like Twizter
5. Export in 24p
 
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