What is Block Jitter?

Block Jitter cuts your image into a grid and randomly displaces some blocks. Looks like corrupted video, broken JPEG compression, or a TV signal falling apart.

Block Jitter Algorithm Diagram

How It Works

Split image into blocks (size configurable)

Randomly select some blocks

Shift selected blocks by random amounts

Fill gaps with black, duplicates, or wrapped pixels

Parameters

Block Size

4-16px: fine grain, subtle static

16-64px: classic glitch look

64-256px: bold, aggressive chunks

Jitter Amount

Low: blocks barely move, signal hiccup

Medium: clear displacement

High: blocks travel far, goes abstract

Probability

10-20%: scattered glitches, image mostly intact

40-60%: half corrupted

80-100%: total destruction

Void Mode (what fills the gaps)

Black: classic corrupted video

Repeat: blocks duplicate, datamosh style

Wrap: pulls from opposite edge

Recipes

Broadcast Error: Medium blocks, low jitter, low probability. That 90s TV interference.

Datamosh Look: Large blocks, high probability, repeat mode. I-frame corruption without the encoding hassle.

Subtle Glitch: Tiny blocks, very low probability. Image looks almost normal. Almost.

Full Abstract: Max everything. Subject disappears. Pure texture.

Combinations

Block Jitter + RGB Shift = VHS tape

Block Jitter + Pixel Sort = digital decay

Block Jitter + Luma Stretch = damaged signal

Layered Corruption

Run it twice: large blocks with low probability first, then small blocks with high probability. You get both macro and micro damage.

The Idea

Block Jitter doesn't add anything. It just rearranges. Same pieces, new order.