Drop a recorded lecture into AskSia (video, audio, slides, or transcript) and read a structured summary in minutes. Every claim links back to the exact moment in the recording or the exact slide. Useful for review, accessibility, and exam prep across an entire semester. Free to start.
Focus on cellular respiration and the Calvin cycle first — they dominate your textbook1 and lecture slides2. Prof. Chen's notes flag three common exam traps3.
AskSia AI Lecture Summarizer takes any recorded lecture (Zoom or Teams MP4, Panopto, YouTube lecture URL, lecture audio MP3, lecture slide PPTX, lecture transcript) and returns a structured summary with timestamp and slide citations on every claim. Mix lecture sources in one session: video plus slide deck plus the professor's notes. Useful for review, accessibility, and full-semester exam prep. 40+ languages with translation.
Most lecture tools handle one input type only. AskSia handles video, audio, slides, and transcripts together, with citations across all of them.
Lecture video (MP4, MOV, WEBM, MKV), lecture audio (MP3, WAV, M4A), lecture slides (PPTX, PPT, Google Slides), lecture transcripts (TXT, SRT, JSON), and YouTube lecture URLs all work in one session.
Drop a Zoom recording, a Teams meeting MP4, a Panopto link, or a public YouTube lecture URL. AskSia handles every common college lecture source the same way.
Every claim in the summary carries a [N] marker. Hover to see the exact lecture timestamp or slide. Click to jump into the recording at that second or the slide at that number.
Drop the lecture video AND the slide deck AND the professor's notes for the same lecture, all in one session. AskSia merges them into one summary with citations across all three.
Drop a full semester of lecture recordings, slide decks, and your own notes into one session and ask 'summarize everything on topic X across the semester'. Synthesized answer with cross-lecture citations.
One click turns the lecture summary into definition flashcards, a concept-check quiz, a study guide, or a visual concept map. Each card links to the original lecture timestamp or slide.
Drop video, audio, slides, or a YouTube link.
Upload the lecture video, audio, slide deck, or paste a YouTube lecture URL. Mix multiple sources for one lecture if needed.
AskSia transcribes audio at sub-100ms latency, identifies up to 10 speakers, parses slide structure if present, and builds a timestamp-and-slide citation index.
Read the structured summary with [N] timestamp and slide citations. Ask Sia for flashcards, a quiz, or a study guide. Export as TXT, DOCX, SRT, or Google Docs.
Start with cellular respiration1 and the Calvin cycle2. Your handwritten review adds a comparison table4.
Drop the Zoom or Teams MP4 of your class and AskSia transcribes and summarizes with timestamps, useful for review, accessibility, and catching up on missed classes.
Many universities post lectures to Panopto or the LMS. Download the MP4 (or audio) and drop into AskSia for a structured summary with timestamps.
Paste a public YouTube lecture URL (MIT OCW, Stanford, Yale, professor uploads) and AskSia summarizes with timestamps and click-to-jump citations.
Drop the lecture slide deck AND the lecture video into one session. AskSia merges them into one summary with both slide citations and video timestamps.
Drop every lecture from a semester (videos, slides, notes) into one session and ask 'summarize everything on the final exam topics'. Cross-lecture citations preserved.
Lectures in Spanish, Mandarin, French, German, Japanese, or any of 40+ supported languages can be summarized in English with timestamps and speaker labels preserved.
Most AI document tools are built for one file. AskSia is built for students studying a whole library at once.
| Feature | AskSia | NotebookLM | ChatPDF | ChatGPT File Upload |
|---|---|---|---|---|
| Max files per session | ✓ 100 | ~ 50 | 1 | ~ 10–20 |
| Native OCR for scanned PDFs | ✓ Auto, no setup | ~ limited | ✗ | ✗ |
| Handwritten notes recognition | ✓ 40+ languages | ✗ | ✗ | ✗ |
| Mixed-format session (PDF+PPT+DOCX+MD) | ✓ All at once | ~ partial | PDF only | ✓ |
| Hover-to-source page highlighting | ✓ Visual preview | ~ citations only | ~ page ref | ✗ |
| 500-page textbook in one pass | ✓ No chunking | ~ size limits | ~ size limits | ✗ truncation |
| Cross-document Q&A | ✓ Unified answer | ✓ | ✗ single doc | ~ degrades |
| Auto flashcards & quizzes | ✓ One click | ✗ | ✗ | ✗ |
| Free to start, no credit card | ✓ 100 files free | ✓ | ~ 1 file free | ✗ Plus needed |
Whether a Zoom recording, a Panopto link, a YouTube lecture, a slide deck, or a transcript, AskSia summarizes any lecture with timestamps and slide citations.