{"name":"mp4-to-mp3-converter","description":"Converts MP4 video URLs into hosted MP3 files with selectable bitrate; also accepts MOV, WEBM, MKV, AVI, M4V, or FLV URLs. Same CloudConvert-backed handler as mp4-to-mp3. Use it as an MP4 to MP3 converter API, to extract audio from MP4, or for video-to-MP3 conversion.","price":"$0.02","method":"POST","input_schema":{"properties":{"video_url":{"type":"string","description":"Public URL of the source video. Max 500MB / 60 minutes."},"bitrate":{"type":"number","enum":[96,128,192],"description":"Output MP3 bitrate in kbps. 96 (smaller, voice), 128 (default, balanced), 192 (higher quality)."}},"required":["video_url"]},"input_example":{"video_url":"https://samplelib.com/mp4/sample-5s.mp4","bitrate":128},"output_example":{"audio_url":"https://...mp3","bitrate":128,"file_size_bytes":161109},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}