Video summarization with vision-language models: what's actually feasible today

Full automatic video summarization is an active research area. A realistic, achievable version of it using frame sampling plus a vision-language model.

Presenting to a room
Presenting to a room

Fully automatic, high-quality video summarization is still an active research problem. A realistic, achievable version for a student project combines frame sampling with a vision-language model, and it works reasonably well for many practical purposes.

A realistic pipeline

  1. Sample frames at scene changes or fixed intervals, not every frame (see frame sampling for video).
  2. Caption each sampled frame with a vision-language model.
  3. Feed the sequence of captions, with timestamps, to a text model to produce a coherent overall summary.

What this gets right and wrong

It captures what's visually present at sampled moments well; it can miss fast action between samples and struggles with anything that requires understanding motion across frames rather than a single frame's content. Be upfront about this limitation in a demo rather than implying full video understanding.

See video frame sampling for vision models.

VisionVideoMultimodal
Pranjul Rathour
Pranjul Rathour
GenAI Engineer · Kanpur, Uttar Pradesh, India

GenAI engineer and AI product builder with 2+ years shipping production-grade AI systems: RAG pipelines, fine-tuned LLMs, hybrid retrieval and multi-modal apps across vision, speech and OCR, architected end to end from ingestion to deployment. Leads engineering for SCULT INDIA's 14-member team, founded the 500+ member TechVerse Enclave community and has mentored 200+ students. Three hackathon first prizes: Changethon 2025 (IIT Roorkee), Product Genesis at Vividhotsava 2025 (CSJMU Kanpur) and BYTEBATTLE (MeetKats).

Open to GenAI roles, hackathon judging, mentorship sessions and guest talks at colleges. Email pranjulrathour41@gmail.com.

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Open to GenAI roles, hackathon judging, mentorship sessions and guest talks at colleges.

Pranjul Rathour, GenAI engineer in Kanpur