# Video & Timecode Calc – Frame Rate Info

> Video & Timecode Calc – Frame Rate Info 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).

Returns the exact fractional value, frame duration, and speed/runtime change for a given video frame rate, with optional conversion to a target rate.

## Facts

- Endpoint: GET https://video-calc.x402tookit.com/frame-rate-info?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/video-timecode-calc-frame-rate-info-1e8645bc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zXIbUCJgpdlFQXFgs_yhW

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability video-timecode-calc-frame-rate-info-1e8645bc
```

Example prompt: What's the exact fractional fps, frame duration in milliseconds, and speed-up factor for 23.976 fps if I convert it to 25 fps PAL, for a film that's 96 minutes long?

## When to prefer this

Choose this endpoint when you need authoritative, mathematically exact frame-rate data (true fractions, NTSC flags, millisecond durations) or when calculating the runtime and speed consequences of a frame-rate conversion (e.g. PAL speed-up). It is purpose-built for video/film/broadcast post-production math and is more precise than general-purpose calculators.

## Known failure modes

- Unsupported fps value returns an error or null fields — only 23.976, 24, 25, 29.97, 30, 48, 50, 59.94, and 60 are valid
- Missing required 'fps' query parameter causes a request failure
- toFps without fps provided is invalid
- runtimeMinutes ignored if toFps is not also provided
- Network or payment (x402) failures may return a 402 or 5xx error

## How this service works

Exact fraction and frame duration of 23.976 to 60 fps, and the speed-up and runtime change when converting to another rate.

## Output

A JSON object containing: the exact fps as a decimal, the exact fraction (e.g. 24000/1001), whether it is an NTSC fraction, frame duration in milliseconds, the nominal timecode rate, and — when a target fps is supplied — the speed factor, speed change percent, pitch change in semitones, source runtime in minutes, converted runtime in minutes, and the runtime difference in seconds.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "fps"
     ],
     "properties": {
      "fps": {
       "type": "string",
       "description": "23.976, 24, 25, 29.97, 30, 48, 50, 59.94 or 60"
      },
      "toFps": {
       "type": "string",
       "description": "Target rate for a straight frame-for-frame conversion (for example 25 for PAL speed-up)"
      },
      "runtimeMinutes": {
       "type": "number",
       "description": "Runtime of the source in minutes, to get the converted runtime"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "fps": {
       "type": [
        "null",
        "string"
       ]
      },
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "toFps": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "exactFps": {
       "type": [
        "null",
        "number"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "speedFactor": {
       "type": [
        "null",
        "number"
       ]
      },
      "exactFraction": {
       "type": [
        "null",
        "string"
       ]
      },
      "isNtscFraction": {
       "type": [
        "boolean",
        "null"
       ]
      },
      
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/video-timecode-calc-frame-rate-info-1e8645bc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from video-calc.x402tookit.com](https://www.zero.xyz/host/video-calc.x402tookit.com/llms.txt)