YouTube to MP3

The tool provides a server side workflow to extract audio from publicly accessible YouTube videos and deliver MP3 audio for offline listening. It is intended for creators, students, researchers, and educators who need portable audio from video sources while respecting rights and permissions. When a user supplies a video link for which they have rights, the tool provides a downloadable MP3 without circumventing protection mechanisms. Core use cases include preparing audio for podcasts, annotating lectures, or building study notes from YouTube content. It is designed to be reliable, predictable, and integrable into existing media workflows.

The core process validates the YouTube URL, ensures the video is accessible, and processes audio extraction server-side. Required input is the video URL; optional inputs include bitrate (128, 192, 256, 320 kbps), start_time and end_time for segment extraction, and metadata tagging. Features are categorized as core (URL input, MP3 encoding at a chosen bitrate, and downloadable file) and advanced (segment trimming, metadata embedding). The system uses a streaming audio path to minimize bandwidth and caches results for repeat requests.

The process accepts inputs such as video_url (string, URL, required), bitrate (integer kbps, optional), start_time (seconds, optional), end_time (seconds, optional), include_metadata (boolean, optional). Outputs include audio_file (MP3, binary; named from video title or user input), duration (seconds), bitrate_used (kbps), and optional metadata block. Encoding targets MP3 with standard ID3 tagging when requested.