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Example: https://example.com/talk.mp4. One audio file is produced per link. YouTube, Vimeo, TikTok and other streaming-site page links are rejected, with no charge.", "items": { "type": "string" } }, "outputFormat": { "title": "Audio format", "enum": [ "mp3", "wav", "flac", "m4a" ], "type": "string", "description": "File type of the extracted audio. MP3 and M4A (AAC) are small lossy files; WAV is uncompressed PCM 16-bit; FLAC is lossless and about half the size of WAV. Audio that is already lossy in the video is not improved by choosing WAV or FLAC.", "default": "mp3" }, "audioBitrateKbps": { "title": "Bitrate for MP3 and M4A (kbps)", "minimum": 32, "maximum": 320, "type": "integer", "description": "MP3 and M4A only; ignored for WAV and FLAC. 128 is fine for speech, 192 to 320 for music. Example: 192.", "default": 192 }, "sampleRateHz": { "title": "Sample rate (Hz)", "minimum": 0, "maximum": 192000, "type": "integer", "description": "Resample the audio, for example 16000 for speech-to-text or 44100 for music. 0 keeps the original rate. Minimum 8000 when set.", "default": 0 }, "channels": { "title": "Channels", "enum": [ "original", "mono", "stereo" ], "type": "string", "description": "Keep the original channel layout, or mix down to mono (smaller files, common for transcription) or stereo.", "default": "original" }, "startSeconds": { "title": "Start at (seconds)", "minimum": 0, "type": "number", "description": "Optional: begin the audio at this time in the video. Example: 30 skips the first 30 seconds. 0 = from the start.", "default": 0 }, "endSeconds": { "title": "End at (seconds)", "minimum": 0, "type": "number", "description": "Optional: stop the audio at this time in the video. Example: 120. 0 = until the end of the video. Must be after the start.", "default": 0 }, "maxVideosPerRun": { "title": "Max videos per run", "minimum": 1, "maximum": 2000, "type": "integer", "description": "Hard cap on videos processed in one run. Links past the cap are listed as skipped and not charged.", "default": 100 }, "maxAudioMinutesPerRun": { "title": "Max audio minutes per run", "minimum": 1, "type": "integer", "description": "Hard cap on the audio minutes you can be charged for in one run. A video that would go over it is skipped, free. Example: 600 = 10 hours of audio, at most $1.80.", "default": 600 }, "maxVideoSizeMb": { "title": "Max video file size (MB)", "minimum": 1, "maximum": 2048, "type": "integer", "description": "Source files above this size are rejected before the download finishes. Maximum 2048.", "default": 500 }, "maxDurationMinutes": { "title": "Max video duration (minutes)", "minimum": 0.1, "type": "number", "description": "Longer source videos are rejected without charge. 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