Video Reference Library
Comprehensive video format and codec references.
Free Video Tools
Practical tools for video creators — analyze, calculate, generate.
Aspect Ratio Calculator
Convert between different aspect ratios and calculate dimens
TBest Posting Time
Find best posting time.
CCaption Checker
Check caption limits.
📄Description Generator
Generate professional video descriptions with templates in 1
📊Engagement Calculator
Calculate video engagement rate: likes, comments, shares vs
🏷Hashtag Generator
Generate relevant hashtags for your video content in multipl
HHook Generator
Generate opening hooks for short videos.
⏱Timecode Calculator
Convert between frames, timecode, and seconds for video edit
🎬Video Info
Extract metadata from any video file in your browser. No upl
✂File Size Calculator
Estimate video file size from bitrate, duration, and resolut
📝Title Generator
Generate catchy video titles for YouTube, TikTok, and Shorts
14 Languages
Full translations across all major languages.
100% Browser
No downloads, no sign-ups. Works entirely in your browser.
Structured Reference
Specs tables, descriptions, and pro tips for each entry.