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Video & Timecode Calc – SMPTE Timecode Arithmetic
x402
Video & Timecode Calc – SMPTE Timecode Arithmetic is a paid API for AI agents from video-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Add or subtract two SMPTE timecodes at a given frame rate (drop-frame aware), returning the result as a timecode, frame count, and real seconds.
Price / call$0.02
Success—
StatusUnknown
How this service works
Add or subtract two SMPTE timecodes at a given frame rate, drop-frame aware, with the result in frames and seconds.
Output
Returns the arithmetic result as a SMPTE timecode string, the individual frame counts for each input, the result in total frames, real elapsed seconds, the fps used, and whether drop-frame was applied. May also include a summary, degraded flag, and disclaimer fields.
Example use cases
Calculate edit end timecode
“My clip starts at 00:58:30:00 and the segment I'm inserting is 00:02:45:12 long — both at 25fps. What timecode does the clip end at, and how many total frames is that?”
Subtract timecodes for duration check
“I need to subtract 01:15:22:10 from 02:30:45:20 at 23.976fps non-drop-frame. What's the difference in timecode, frames, and real seconds?”
Drop-frame timecode addition for broadcast
“Can you add 00:30:00;00 and 00:29:59;29 together using 29.97 drop-frame? I need the result timecode, total frame count, and how many real seconds that is.”
Technical details
Endpoint
GEThttps://video-calc.x402tookit.com/timecode-math?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need precise SMPTE timecode addition or subtraction that is drop-frame aware — especially for broadcast (29.97 DF) or film (23.976, 24) workflows. Prefer it over manual frame counting because it handles the drop-frame discontinuity correctly and returns results in both frames and real seconds simultaneously. It is the right choice when your input is already in HH:MM:SS:FF timecode notation rather than raw frame counts (use the frame-count converter sibling for that).
Side effects
- Invalid timecode format (not HH:MM:SS:FF or HH:MM:SS;FF) returns an error
- Unsupported fps value outside allowed set (23.976, 24, 25, 29.97, 30, 48, 50, 59.94, 60) returns an error
- Drop-frame requested for a non-drop-frame-compatible fps (only 29.97 and 59.94) returns an error
- Missing required parameters a or b returns a validation error
- Subtraction resulting in a negative timecode may return an error or zero-clamped result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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