Every screen you have ever looked at — your phone, your TV, your laptop — is not showing you one continuous image. It is made up of thousands of tiny coloured dots. Each dot is called a pixel.

Each pixel shows one colour at a time. When millions of them sit next to each other, each showing a slightly different colour — together they create an image that looks real to your eye. Walk up close to an LED billboard and you'll literally see the individual red, green, and blue dots. Step back and those same dots form a face or a landscape. That is exactly what your screen does — every frame, every second.

The key rule: More pixels = more detail = sharper image. The number of pixels in one frame is what we call the resolution.

Resolution is always written as two numbers — width × height in pixels. Think of it as a grid. 1920×1080 means 1920 columns of pixels across and 1080 rows down. Multiply them: that's nearly 2 million pixels packed into every single frame.

Why "4K"? Because the width is roughly 4,000 pixels. The K = kilo = thousand. Same reason 1080 refers to the height — 1080 rows of pixels tall.

Your production house shoots everything in 4K. But most deliveries go out in 1080p. Here's why that's the smart move:

Two screens can have the same number of pixels but completely different shapes. A wide cinema screen and a tall phone screen can both be "1080p" — they just arrange those pixels differently. That shape is the aspect ratio.

The numbers in an aspect ratio are not pixels. They are a simple proportion — how many units wide compared to how many units tall. Think of it like a recipe ratio: if a recipe says 2 parts water to 1 part rice, it doesn't matter if you use cups or litres — the shape of the proportion stays the same.

You don't need to calculate these every time. But understanding why 16:9 and 9:16 are the same numbers just flipped — that's the key. Same pixels, different orientation. Wide screen vs tall screen.

As an editor, your main work is always 16:9 — wedding film, teaser, highlights. 9:16 is your secondary delivery — same timeline, cropped and reframed for Reels and Shorts. You don't re-edit. You just reframe.