1. Import your video footage.
Drag and drop your video footage into the Project panel in After Effects.
2. Create a new composition.
Click on the "Composition" menu and select "New Composition." In the New Composition dialog box, set the composition settings to match the resolution and frame rate of your video footage.
3. Add the Glass effect to your video footage.
Select your video layer in the Timeline panel and then click on the "Effects" menu. Select "Stylize" and then "Glass." This will add the Glass effect to your video footage.
4. Adjust the Glass effect settings.
In the Effect Controls panel, you can adjust the settings of the Glass effect. The most important settings are:
* Refraction: This setting controls how much light is refracted through the glass. A higher value will create a more distorted glass effect.
* Reflection: This setting controls how much light is reflected off the glass. A higher value will create a more reflective glass effect.
* Gloss: This setting controls how glossy the glass appears. A higher value will create a more shiny glass effect.
5. Animate the Glass effect settings.
To animate the Glass effect settings, simply click on the stopwatch icon next to the setting that you want to animate. This will create a keyframe for that setting. You can then move the playhead to a different time in the timeline and adjust the setting to create a different keyframe. After Effects will automatically interpolate the values between the keyframes to create a smooth animation.
6. Render your composition.
Once you are finished animating your Glass effect, you can render your composition. To do this, click on the "Render" menu and select "Render Composition." In the Render Settings dialog box, select the output format and location for your rendered composition.
7. Enjoy your animated glass texture video!