Creating a visual preview

- [Instructor] Now, it's time to move on…to the visual previews aspect.…This is going to generate a file…that can be used by LRTimelapse to create the video.…You'll notice, for example, that if we play this,…all of those changes we made to the image…are not being shown in the preview window.…But when I click the visual previews button,…it will generate those.…Now, this will take a little bit of time,…but you'll see that what it goes through is building a line,…and what we're looking at here is this pink line.…

The spikes are going to indicate…where there is flicker or other problems,…but essentially, what we're trying…to do is get a pink curved line,…and any time we see a spike, that's indicating…that there's a problem with the flicker…in the file or a big exposure change.…Remember, in this case, flicker was being caused…by the clouds and environmental conditions.…On this really bright day, clouds kept moving…in front of the sun, making changes.…And because we were using a much shorter exposure,…it was more subject to change in the file.…