VideoFlowcodeGitHubTry itCoreRenderersReact Video EditorPlaygroundExamplesDocscodeGitHubTry it
Getting started
InstallationQuick startCore conceptsYour first video
Builder
Builder APITime formatsParallel & wait
Layers
TextImageVideoAudioCaptionsShapeGroups
Animation
Animate & keyframesEasing functionsTransitionsEffects
Renderers
Browser rendererServer rendererDOM preview
React Video Editor
QuickstartThemingUploadsCustom panelsHooks & commandsKeyboard shortcuts
API reference
Overview@videoflow/core@videoflow/renderer-browser@videoflow/renderer-server@videoflow/renderer-dom@videoflow/react-video-editor

Guide not found

There's no guide at /docs/guide/responsive-programmatic-video-resolution-agnostic-em-units.

← Back to docs
VideoFlow

Open-source toolkit for composing videos from code.

Product

CoreRenderersReact Video EditorPlayground

Learn

DocsAPI referenceExamplesvs. Remotionvs. FFmpeg

Project

GitHubLicenseContactTermsPrivacy

From the blog

All posts →The Art of the Reveal: 5 Cinematic Text Animations in VideoFlowHow to Build a High-Impact Caption Engine for Short-Form VideoBeyond the Shell: Why Your Video Pipeline Should Be a TypeScript Library, Not an FFmpeg ScriptComponent-Driven Video: Mastering Layer Groups and CompositionHow to Automate Video Creation from Markdown with VideoFlowAuthoring Resolution-Agnostic Videos: Why 1em is Your Secret WeaponHow to Build an In-App Video Editor with React and VideoFlowMastering GLSL Video Effects: Building Cinematic Pipelines with VideoFlow© 2026 VideoFlow. Apache-2.0 core.