Video & Timecode Calc

SMPTE timecode including drop-frame, shutter angle, slow motion, 2:3 pulldown, frame rates, resolution and bitrate maths.

payments ON MAINNET (real money) · 8 live endpoints

EndpointPriceWhat it answers
GET /frame-rate-info$0.02Exact fraction and frame duration of 23.976 to 60 fps, and the speed-up and runtime change when converting to another rate.
GET /pulldown-32$0.022:3 pulldown cadence: which film frames land in which video fields and frames when 24 fps film is telecined.
GET /resolution-info$0.02Aspect ratio, megapixels, common name and uncompressed data rate for a video frame size, chroma subsampling and fps.
GET /shutter-angle$0.02Convert shutter angle to exposure time (and back) at a frame rate, plus the angle that avoids 50 or 60 Hz flicker.
GET /slow-motion$0.02Slow-motion factor from capture and playback fps, output duration for real seconds, and capture fps needed.
GET /timecode-convert$0.02Convert frame counts to SMPTE timecode and back at 23.976 to 60 fps, with 29.97 and 59.94 drop-frame handled correctly.
GET /timecode-math$0.02Add or subtract two SMPTE timecodes at a given frame rate, drop-frame aware, with the result in frames and seconds.
GET /video-bitrate-size$0.02File size from video bitrate and duration (MB, GB, GiB), bits per pixel, or the bitrate that hits a target size.

GET /catalog returns this list as JSON. Activity hub · uptime.


Video and film arithmetic computed locally from the numbers given, per SMPTE and standard industry definitions, provided as is. Frame rates 23.976, 29.97 and 59.94 are the exact fractions 24000/1001, 30000/1001 and 60000/1001. Not a substitute for your editing system's own timecode handling in delivery-critical work. Every paid response carries a disclaimer field.