The TubeCortex blog
Practical guides on turning YouTube channels, playlists, and saved videos into a searchable knowledge base (a YouTube brain) — AI summaries, cited answers, channel comparisons, and new-upload alerts.
Latest guide
How does an AI video summarizer work? TubeCortex reads a video's captions, summarizes the whole transcript, and answers questions with clickable timestamps.
4 Oct 2026 · 13 min read
New here? Begin with these two guides.
17 Jun 2026 · 13 min read
Turn a YouTube course or playlist into searchable study notes you can ask questions about, with answers tied back to the exact video moment.
7 Sep 2026 · 10 min read
Paste 5 YouTube video links into TubeCortex, build a brain, and ask one question. Get a single cited answer from all five videos without watching them.
17 Aug 2026 · 12 min read
ChatGPT vs NotebookLM (now Gemini Notebook) for YouTube research, checked September 2026: what each does with a video link, and when TubeCortex fits better.
20 Sep 2026 · 9 min read
TubeCortex vs NotebookLM (now Gemini Notebook) for YouTube: automatic channel tracking and room for a whole back catalog, fairly compared.
24 Aug 2026 · 9 min read
