Not exclusive to Adobe projects, keyframes are a way to enable change over time within video editing, or in more simple terms, animating a specific effect.
So you're ready to take the next step in your video editing skills and want to explore the world of keyframes?
A good example of how keyframes work within Adobe Premiere Pro would be to imagine applying a hue/saturation effect over a video clip within the timeline. Next, you would then be able to find the adjustments of
the hue/saturation adjustment in the Effect Controls panel provided the clip that you added the effect to is selected.
Then you would hypothetically be able to pull the saturation value down from 100 - 0 and your clip would be fully black and white in appearance.
But if you were to toggle keyframes on you could then have full control over the amount of time it takes for the values of 100% saturation to get to 0%. So the result would be a clip that fades from colour into black and white.
These keyframes can be found in nearly every effect within Adobe Premiere Pro, from scaling, position to even keyframing with time or "Time Remapping".
Take a look at the video below by the YouTube channel: Collecting Japan on How To Use Keyframes In Adobe Premiere Pro! (For Beginners)...