AmitabhMorey/insta-transcribe — reverse-engineered prompt

Build me a simple Python command line tool that takes an Instagram Reel or public post URL, downloads the video, pulls out the audio, transcribes the speech with OpenAI Whisper, and saves the result as a clean JSON file.

When I run it, it should ask me to paste the Instagram URL, then show clear progress messages like downloading, extracting audio, transcribing, and saved. Please create folders automatically for downloaded files and transcripts. Each transcript should include the original URL, the time it was created, the video path, the audio path, and the full transcript text.

Make it easy to set up with a requirements file and a README that explains how to install dependencies, including FFmpeg, and how to run it on Mac, Windows, and Linux. Please handle common errors gracefully, like missing FFmpeg, bad Instagram links, private posts, or transcription failures. Look up current docs online if you need to.