{"uid":"cap_y61DnB90ltzvzFHv2d6sF","slug":"mp4-to-mp3-audio-extractor-x402-agentutility-ai-8c8849c3","name":"MP4 to MP3 Audio Extractor (x402.agentutility.ai)","description":"Converts MP4, MOV, WEBM, MKV, AVI, M4V, or FLV URLs into hosted MP3 output with selectable 96, 128, or 192 kbps bitrate. CloudConvert backend, 60-min / 500MB max. Use it as an MP4 to MP3 API, video to MP3 converter, or extract-audio-from-video endpoint.","url":"https://x402.agentutility.ai/mp4-to-mp3-api","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"required":["video_url"],"properties":{"bitrate":{"enum":[96,128,192],"type":"number","description":"Output MP3 bitrate in kbps. 96 (smaller, voice), 128 (default, balanced), 192 (higher quality)."},"video_url":{"type":"string","description":"Public URL of the source video. Max 500MB / 60 minutes."}}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"bitrate":{"type":"integer"},"audio_url":{"type":"string"},"source_url":{"type":"string"},"file_size_bytes":{"type":"integer"}}}}}}},"responseSchema":{"type":"json","example":{"bitrate":128,"audio_url":"https://...mp3","source_url":"https://samplelib.com/mp4/sample-5s.mp4","file_size_bytes":161109}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LmIo9Sl6CrFxSDUHVX9I3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts a public video URL (MP4, MOV, WEBM, MKV, AVI, M4V, FLV) into a hosted MP3 file at a selectable bitrate of 96, 128, or 192 kbps.","exampleAgentPrompt":"Take the video at https://samplelib.com/mp4/sample-5s.mp4 and extract just the audio as an MP3 at 192 kbps — give me the hosted MP3 URL when it's done.","exampleUseCases":[{"title":"Podcast audio extraction from video","prompt":"I have a recorded interview at https://example.com/interview.mp4 — can you pull out just the audio and give me an MP3 at 128 kbps? I want to upload it as a podcast episode."},{"title":"High-quality music video audio rip","prompt":"Extract the audio from this music video at https://cdn.example.com/concert.mov and convert it to MP3 at 192 kbps so I have a high-quality audio file."},{"title":"Voice memo from a compressed screen recording","prompt":"I've got a screen recording at https://storage.example.com/screencast.webm — pull the audio out as an MP3 at 96 kbps, I just need the voice narration and file size doesn't matter much."}],"resultDescription":"A JSON object containing the hosted MP3 download URL (audio_url), the source video URL (source_url), the output bitrate in kbps (bitrate), and the file size in bytes (file_size_bytes).","failureModes":["Video URL is not publicly accessible or returns a non-200 response — conversion fails","File exceeds 500 MB limit — request rejected","Video duration exceeds 60 minutes — request rejected","Unsupported video format submitted — conversion error","Network timeout fetching source video — transient failure","Malformed or missing video_url field — validation error"],"whenToPreferThis":"Use this endpoint when you need to programmatically extract or convert audio from a hosted video file URL into MP3 format without setting up your own transcoding pipeline. It is especially suited for agents that need a quick, pay-per-use (USDC via x402) conversion with selectable quality levels and a directly usable hosted output URL. Prefer this over self-hosted FFmpeg or general-purpose file conversion APIs when you need a simple REST call with no infrastructure overhead and files under 500 MB / 60 minutes.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T09:15:25.319Z","isFirstParty":false}