I’ve had a pipeline in mind for exactly this purpose that I want to build when I get around to it:

• Download the audio file from RSS feed
• Self hosted AI transcription model (with output that includes timestamps)
• Self hosted LLM to recognise ad sections and return the start and end timestamps as json
• ffmpeg to slice those timestamps out and stitch the rest back together

In theory, this should be able to remove ad and sponsor sections of any length completely automatically and there’s nothing to stop it working on videos too