Engineering Tools
Client-side utilities for calculating bitrates, aspect ratios, and sync offsets. No data is sent to a server (unless JS is disabled).
Target Bitrate Calc
Calculate bitrate from a target file size.
File Size Estimator
Estimate size from video and audio bitrates.
Subtitle Sync Adjuster
Calculate millisecond offsets for out-of-sync subs.
Aspect Ratio Calc
Calculate pixel dimensions from ratios.
GOP Length Calc
Frames between IDR based on interval.
Bandwidth Calc
Calculate TCP overhead for streaming.
Frame Time Calc
Calculate milliseconds per frame.
Mod16 Validator
Check dimensions for encoder padding.
Pixel Format Map
Map FourCC codes to depths/chroma.
Audio Matrix Mix
Calculate 5.1 to Stereo downmix levels.