Join Richard Harrington for an in-depth discussion in this video Refining the duration and frame rate, part of Creating Time-Lapse Video.
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Rich: When it comes to frame rate, you're going to want to let Premiere Pro know how to interpret the clips. For best results, make sure you set the frame rate to match your desired delivery sequence. There's two ways to do this. If you'd like to globally set it, under Preferences you could choose the Media category. And this is where you could set the indeterminate media time base. Meaning, if you import a clip with the time base not assigned, such as an image sequence, always assign the following frame rate.
When you click OK, that will change it for all newly imported clips. For example, if I bring that back in again as an image sequence, you'll see that that one did indeed come in at 23.976. Let's delete it for a second. If you've already imported the clip, and it's not the frame rate you want, just select it, right click, and choose, Modify, Interpret Footage. You now can assign a new frame rate.
So, I can type in the 23.976. This works out well, and when I click Ok, it will adjust it. Let's go ahead and drop this into a sequence. I'll just make a new sequence, I'll stick with 720p. And I could choose a mastering codec. Notice, with the current version of Premiere Pro, you can go with high quality codecs like Avid DNX-HD. This is a nice reasonable quality format to work with, if you want HD video without extremely large file sizes. I've chosen a 720p, 23.976 preset.
And I can click OK to create the sequence. I'll now drop the shot into the sequence. In doing so, I don't want to change the sequence settings, so I'll click Keep. You'll notice that the shot comes in significantly larger than what we need. Let's just take a look, though, at this, for playback quality. I'll select that and choose sequence, render selection. Notice that the videos preview build very quickly. Now, this is not a long sequence. We're only bringing in a very short clip.
But that's because I wanted to keep the downloadable files reasonable. There it is, smoothly playing back. And you saw the cloud whisk on by. However, you could tell we're barely seeing this. And that's because the shot is almost 5 times bigger than what we need for HD video. Let's adjust the duration slightly. I'll select the clip, and press Cmd+R, or Ctr+R for duration. And I can now change the speed.
If I set this to 200%, it's even faster. On the other hand, if I set it to say, 50%, it's twice as long. This makes it very easy for you to change the speed. Once you've done that, let's do a quick preview. We'll render the selection. And you see as it steps through, it works but looked just a little choppy as each of the frames were repeated. If I right click, I can tell this to do Frame Blending.
Let's go ahead and preview. Much smoother. Everything's looking good, except for the fact that we're barely seeing the movie. So, let's come back and adjust the size.
This course was created and produced by Rich Harrington. We are honored to host this content in our library.
- What is time-lapse photography?
- Why shoot with a still camera?
- Choosing a frame size and frame rate
- Using an internal or external intervalometer
- Selecting a memory card
- Tracking the sun's position
- Deciding how long to shoot
- Using a slider
- Shooting time lapse on a smartphone or tablet
- Removing noise and spots with Adobe Camera Raw
- Importing the image sequence
- Refining the duration and frame rate
- Blending frames
- Creating variable speed effects
- Exporting your sequence