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Glossary

Render

Turning a project into a finished video file, by computing every frame and encoding the frames and the sound.

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Updated 4 October 2026

On this page

  1. How rendering works with code
  2. Settings that matter
  3. Rendering many versions
  4. Where it runs
  5. In Motion Cheat Code

To render a video is to compute every frame of a project and encode the frames, together with the sound, into a file such as an MP4. The word comes from computer graphics, where rendering means producing an image from a description of it. A video editor renders when it exports; a code-based tool renders when it turns a page or a script into frames.

How rendering works with code

In HyperFrames, a video is a web page. Rendering steps through it frame by frame: for each frame the renderer works out the exact time, moves every animation to that moment, captures the picture in Chrome and passes it to FFmpeg, which encodes the video and mixes in the sound. At 30 frames per second, a 6-second reel is 180 frames.

Because each frame is asked for at an exact time, the result is deterministic: the same project renders the same frames every time.

Settings that matter

Setting What it changes Typical choice for a Reel
Size The canvas in pixels 1080 x 1920
Frame rate Frames per second 30 fps
Quality How much detail the encoder keeps Draft while working, default or higher for the final
Format The file type MP4 to post; WebM or MOV for transparent overlays
Variables The words, numbers and colors used Your values, from a file

Higher quality means bigger files; apps compress uploads again, so give them a clean master rather than the smallest file.

Rendering many versions

A template with variables can render one file per row of data, for example one video per product, in one command. That is batch rendering; see batch-rendering video variants.

Where it runs

Rendering runs on your own computer, or in a cloud session when you work from a phone. No upload or render credits are needed with HyperFrames. A short reel takes minutes, most of it while the frames are captured; heavy effects and long videos take longer.

In Motion Cheat Code

Every template in the pack renders with one command or one sentence to Claude Code, and the prompts end with a render step that checks the project, looks at snapshots and fixes problems before the final file is made.

Questions

What is the difference between a preview and a render?

A preview plays the project in real time so you can watch and scrub it; it may stutter on heavy scenes. A render computes every frame exactly and writes a file, so it never drops a frame, but it takes longer.

What is a draft render?

A faster, lower-quality render for checking timing and sound. Iterate with drafts and render the final quality once.

Why does my render take longer than the video?

Each frame is computed and captured one by one. Heavy effects, high frame rates and large sizes add work; draft quality and fewer effects make it faster.

Keep reading

  • HyperFramesHyperFrames is open-source software by HeyGen that turns HTML, CSS and animation into MP4 video frame by frame. What it is, how it works and what it needs.
  • Batch-render video variantsTurn one short video into a template with variables, then render a version per product, hook, language or customer from a spreadsheet in one command.
  • Alpha channelAn alpha channel stores transparency per pixel, which makes overlays possible. Which video formats keep it, which editors read it and the green-screen fallback.
  • GSAP timelineA GSAP timeline is a sequence of animations placed at exact times. What it is, why video renderers need it paused and seekable, and the rules for exact frames.

Motion Cheat Code

Type a prompt. Get a reel.

The all-in-one Claude Code video pack: 250 prompts, 60 templates, 400 sound effects, 30 music tracks and 60 overlays, plus studios for captions, carousels and covers. $49 one-time, free updates, 14-day money-back guarantee.

See what's insideFree starter kit

You need a paid Claude plan that includes Claude Code (Pro or higher), bought separately from Anthropic, and a Mac, a Windows computer or just your phone (phone setup). Not included in the pack.

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Motion Cheat Code is an independent product by NorthByte. Not affiliated with or endorsed by Anthropic or HeyGen. Claude and Claude Code are trademarks of Anthropic, PBC. HyperFrames is open-source software by HeyGen (Apache-2.0).

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