Block Dissolve - random After Effects preset

This is what the built-in Block Dissolve - random preset does. It is in the Dissolves folder of the After Effects animation presets, and it works on the upper of two layers.

Click the preview to copy the name.

Where: Effects & Presets › Animation Presets › Transitions - Dissolves
Works on: The upper of two layers
Comes with: After Effects. Nothing to download.

How to apply Block Dissolve - random

Put the two clips on separate layers so they overlap in time.
Select the upper layer and move the playhead to where the transition should start.
Open Window › Effects & Presets, paste the name in the search box and double-click Block Dissolve - random.

Press U on the layer to see the keyframes, and drag the last one to change how long the transition lasts. To play it backwards, select the keyframes, right-click and choose Keyframe Assistant › Time-Reverse Keyframes.

Where is Block Dissolve - random in After Effects?

Open Window › Effects & Presets and go to Animation Presets › Transitions - Dissolves. It is quicker to type the name in the search box at the top of the panel.

Do I need to download Block Dissolve - random?

No. It is installed with After Effects; this preview was rendered in After Effects 2026. On disk it is an .ffx file in the Presets › Transitions - Dissolves folder inside the After Effects application folder.

How do I change Block Dissolve - random after applying it?

Block Dissolve - random After Effects preset

How to apply Block Dissolve - random

More Dissolves presets 16 in this folder

Block Dissolve - scanlines

Dissolve - blobs

Dissolve - dither

Dissolve - ripple

Dissolve - sand

Dissolve - unmelt