Ceci est une ancienne révision du document !
Although we’ve touched on effects that you can apply to a clip, we’ll go a bit more in-depth on clips in this article.
First, let’s import a clip. Another way to add a clip is to right-click in the clips area and choose ‘Online Resources’ – which will give you a search window of free clips to choose from. The dropdown menu lets you choose from audio/video/ graphic libraries, and you can enter some text to filter the list of things to import.
I’m going to import my own video clip, and apply some effects to it. The first effect I’m going to apply is Add Effect > Crop and Transform > Pan and Zoom. This is an effect which can be animated, which is something we touched on briefly last issue. Just like last time, we add a keyframe and apply some settings. Do that several times and you have an animated effect. So, what I’ve done is made a keyframe 5 seconds in, and another at 8 seconds in.
First, click the ‘synchronise with timeline’ button (chain links) to move your effect slider with the timeline slider. I’ve not touched the settings for the 5sec keyframe, but I’ve upped the zoom level on the 8sec keyframe, and adjusted the X and Y values to center the subject a bit. What this means is that the video plays normally for 5secs, then, from the 5sec mark to the 8sec mark, it’ll spend those three seconds zooming in to my 8sec keyframe. Of course, you don’t have to zoom, you could just as easily track your subject without the zoom.
The only problem with effects is that not all of them can be animated. The best gauge I can give is to look through the effects available, and, if it says ‘keyframeable,’ then it can definitely be animated. Some effects can have keyframes, but you’ll have to apply them to see if they’ll do keyframes. If they can, they’ll have a small icon of a stopwatch in the effect properties:
This blur effect can be animated by clicking the stopwatch to apply a keyframe.
TIP: Clicking the eye icon beside the effect name will hide it, while clicking the down-arrow will hide the properties of the effect until you click the arrow to reshow them. Both are useful when you have several effects taking up space or CPU time.
If the time on a keyframe is wrong, you can click on the keyframe and set the time on it using the ‘Position’ slider. In this case, ‘Kernel size’ is the amount of blur. In this blur example, I have it really blurry at the start (00:00:00:00), and getting sharper, until it’s returned to normal at roughly the 7sec mark. I still have my zoom and pan too.
Next issue we’ll start a new series of Blender tutorials!