Video & Animation

Compute title-safe and action-safe rectangles, plus letterbox/pillarbox bars and the largest crop for a target aspect ratio.

Add and subtract SMPTE timecodes with correct drop-frame handling for 29.97 and 59.94 fps, and convert between timecode and frame counts.

Build common FFmpeg commands for compression, GIFs, trimming, thumbnails and audio extraction.

Calculate per-frame delay, sprite-sheet dimensions and a ready-to-use CSS steps() keyframe animation from frame count and fps.

Estimate video bitrate and final file size from resolution, fps, codec, motion and duration.

Preview YouTube title and description truncation and get a reusable description template.