Narrator: In this tutorial,
we're going to learn how to adjust the speed of a clip.
There's multiple ways to do it,
and I'll show you a couple of them.
Here we have this time lapse,
well not really a time lapse,
but just a very long shot that I recorded in the Alps.
It's three minutes, actually,
so not that long,
but if we speed it up to a few seconds,
we'll be able to see the movement
of these clouds even better.
Right now if you sit through it,
you can barely see any movement.
So we wanna speed this up.
One of the easiest ways to do that
is just simply right clicking,
going to speed slash duration,
and this brings up this speed slash duration panel.
Right now the speed is set to 100%,
and you see the duration down here.
We can increase this to, say, 2000%,
and when you do that you see the duration
down here change as well.
Say you know specifically that you need
this clip to be just three seconds,
you can literally click and drag
to the left or right down here,
or you can go in,
click it once, and type in the speed that you want.
You'll also see here that you can reverse the speed
if you wanna make something reverse.
If there is audio,
and there's someone talking,
you can maintain audio pitch by checking this box.
Otherwise if you speed something up,
people's voices will get really high,
or if you slow it down,
people's voices will get very low.
So this has a way of actually maintaining
the pitch of a voice or of the audio,
even with a speed adjustment.
A long time ago it seems like now,
we learned about ripple edits
and shifting trailing clips.
If you check this button,
all of the clips to the right of this one
will jump to the left.
So right now I don't have any other clips of this timeline,
but if I did have a bunch,
and I did make this a lot shorter,
by checking this box it will move all of these clips
to the left after it makes this clip shorter.
So I'm just going to leave those unchecked for now.
Select okay, and you see what happens
is our clip got really short.
So let's go play through this.
See what it looks like.
And there's a little bit of a stutter,
But it does a pretty good job.
To remove that stutter
and render out this effect or any effect.
You can do that by going up to sequence render in to out.
Once I do that,
you'll notice that this yellow bar up here becomes green.
A yellow bar means that your computer
can probably play through it,
but there is an effect applied to it,
and it's not rendered out.
A green bar means that there is an effect on there,
but it has been rendered,
and a red bar means that there's an effect on there
that won't play because it needs to be rendered out.
So if there's red bars after you add an effect,
so let's just say,
let's do this warp stabiliser,
so if I type warp,
which we'll learn about in a future lesson.
If I add this, you'll see that it,
not only it can't be used when I speed up a clip,
but there's this red bar that needs to be rendered out.
I'm gonna undo that.
So that's how you speed up a clip or slow down a clip.
I'm gonna undo that all,
and I'll show you a different way
that you could speed up clips.
If you click on any clip,
go up to effects controls,
you see under motion and opacity,
this time remapping option.
This allows you to literally remap the time,
speed up, slow down,
even change from slow to fast.
We'll learn about that in
the next lesson with speed ramping,
but if you drop down this button right here,
you have this bar that you can decrease or increase,
and by doing that,
it speeds up or decreases the video itself.
You will notice though there is a limit
to 1000 with time remapping,
and to get that three second clip,
we had to the that right clip speed duration option
so that we can go past 1000%.
It was like 6000 or something like that.
You'll also noticed now though that I have
a 1000 speed adjustment via time remapping,
but the clip speed duration,
it thinks it's at 100%,
even though it's still speeded up.
So you can kind of use these two effects
to increase the speed more than the limits.
Okay?
So those are the two ways that you can increase or decrease
the speed of a clip.
We're going to be looking at the time remapping
in the next lesson to do some speed ramps
where we speed and then slow down into some sort of action.
Thanks for watching,
and we'll see you in that lesson.