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RelayStation Media Speed Changer
x402
RelayStation Media Speed Changer is a paid API for AI agents from api.relaystation.ai, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Changes the playback speed of audio or video files with pitch preservation by default, billed per megabyte of input.
Price / call$0.01
Success—
StatusUnknown
How this service works
$0.0005/MB. Speed up or slow down audio/video — pitch-preserving by default. 1¢ x402 min; remainder auto-credits — relaystation.ai/penny
Output
Returns the speed-adjusted audio or video file with pitch preserved by default. The output is the transformed media bytes, billed at $0.0005 per MB of input with a minimum charge of 1 cent; any remainder beyond the minimum is automatically credited back.
Example use cases
Speed up podcast for faster listening
“I have a 45-minute podcast episode that's about 60MB — can you speed it up to 1.75x while keeping the voices sounding natural and pitch-preserved?”
Slow down video for frame-by-frame review
“Slow down this 20MB video clip to 0.5x speed so I can review the motion more carefully, and keep the audio pitch intact.”
Speed up lecture recording for study
“I recorded a 2-hour lecture and it's 200MB — can you speed it up to 2x speed with pitch preservation so it sounds like a real voice, not chipmunks?”
Technical details
Endpoint
POSThttps://api.relaystation.ai/v1/media/speedWhen to prefer
Choose this endpoint when you need programmatic, per-call pitch-preserving speed adjustment of audio or video at low per-MB cost with microtransaction billing. Ideal for agents automating media workflows, content pipelines, or accessibility tooling where tempo changes are needed without voice distortion. Prefer it over FFmpeg-based self-hosted solutions when you want a managed, pay-as-you-go API with no infrastructure overhead.
Side effects
- Unsupported media format — endpoint may reject non-audio/video file types
- File too large or malformed — may return an error if bytes are corrupt or unreadable
- Invalid speed multiplier — extreme values (e.g. 0x or extremely high multipliers) may be rejected
- Insufficient payment — x402 payment below the 1¢ minimum will fail authorization
- Network timeout for large files — very large uploads may time out before processing completes
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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