Cinelerra Tutorial: Slow and Fast Motion

So you've probably seen the stuff on the web for slow and fast motion in Cinelerra... and probably drooled blankly at the screen for an hour trying to understand insert this here and calculate that there... forget all that. Here's how you do it! It's actually WAY less involved.

Sorry for the delay in this one - I upgraded to Jaunty and KDE 4.3. LOVING both, but it takes a while to get RecordMyDesktop tweaked out just right after a system change. Sorry about the quality too - I actually did this one three times and still spent a lot of time in post... and it's still kinda off. But I think I got it squared away in time for the next one! Speaking of... any suggestions? I was thinking picture slideshows or chromakey...

Man, I am starting to feel so left out not having a HD camera!

Category:

Film & Animation

Tags:

• cinelerra
• linux
• ubuntu
• tutorial
• reframe
• reframert
• timestretch
• time
• stretch
• mel
• alf
• ian
• aidan
• covey
• video
• production
• special
• effects

[gandrewstone]

this is great! But I'm stuck on how to stop the fast/slow motion. I mean, I only want a section of the video to be in fast motion. Do you know how to do that?

[vaasnaad]

Thanks! Just highlight the section you want to be in slow/fast motion and apply the effect to that area. Remember that you'll be dragging the effect, not the clip, to adjust the ACTUAL time things are affected. So you'll drag it longer for slow and drag it back for fast. Hope that made sense.

[MegaAfroGuy]

nice. can you do it in kdenlive ?

[vaasnaad]

Probably... might want to ask Arthur at Arthursucks channel. I haven't messed with Kdenlive but I think I"m about to start... :-)

[budgiebreder]

"i don't know how to make the chipmunk audio..."

if you don't know how to do that now you use the "pitch shift"effect. i use it on my videos where i think youtube will disable the sound. but that's about the only effect i know how to use! (hence that i'm watching this video!) thx again for all your help!

[vaasnaad]

Oh yeah! I was thinking more of the fast motion stuff, thanks for clarifying that! Yes, I used pitch shift too when I did that "By all the ice gods of hell!" thing in my first video! LOL

I also use it for my flash sound effect - it's an old style flash bulb reversed and shifted down as far as I could crank it.

[SkaterCriminal]

my audio doesn't match with my video. the Audio is like a second later then my video and that isn't so good with a skate video (sorry for bad english im from holland).

[phillipjamesbag]

can you do ramped slow mos to reverse then speed up in a fluid motion kinda like in avid media composer?

[kafkaian]

I've almost gone through all of these Cinelerra videos now and they've all been really helpful. So thanks to vaasnaad for posting them. I for one am really grateful to those who take their own time out to help others and get really racked off by a vocal minority who criticise for the sake of it. Keep up the good work vaasnaad and regards from across the pond, Ian

[neverhood311]

Sorry if you've gotten this question before, but I have a 720p clip at 60fps but I want to resize it to 480p and slow it down to 24p (technically 23.976) so it's in slow motion. Would I just use the reframeRT plugin and set the speed to 0.4 (24fps / 60fps)?

[sadcanofbeans]

@vaasnaad

kdenlive is nowhere near as stable as cinelerra, unfortunately. it's a great package, but under ubuntu 10.04 in my case at least, there's problems with everything from the clip/project monitor going entirely blank to odd visual artifacts being encoded into your final project depending on the format you used -initially-. It looks like it's going to be great in a few more point releases, but i switched back to cinelerra after trying and failing at working around the issues.

[h1ll37]

thanks :)

[IceFritzLanger]

@gandrewstone

May be you figured it out, but it could help other people seeing this video

Use the text cursor mode, select the section you want to alter, add the effect Reframe RT .( All the effects could be applied like this, but when you want to change them after, you must double click on it to alter th whole section, or it will change only one frame )

[IceFritzLanger]

Thanks =)

[gandrewstone]

Your comment helped me figure stuff out. If I select 2x for 30 sec starting at 0 it would play a recorded-time 1 min in 30 seconds. Then when the ReframeRT effect is gone it pops back to where it would have been if the effect had not been applied.(i.e. at recording-time 30 sec). But I've already seen that portion in fast-speed. Not good. So you must add a new track ABOVE it with the clip you want to see. Stumped on how 2 do in 1 track!

Your videos make Cinelerra usable! Keep it up!