I would love a tool (or tools) that would let me: 1) Search all of the text transcripts for all of the videos for a given channel/creator; 2) Download all of

I would love a tool (or tools) that would let me: 1) Search all of the text transcripts for all of the videos for a given channel/creator; 2) Download all of the text transcripts for all of the videos for a given channel/creator; Ideally without authentication/login... You know, like the way plain old Google search works...