#video
3 articles
01
·VLMs & Multimodal·★ MEMBER·PAPER·8 min read
Video Understanding from Scratch — From a Pile of Frames to a Sense of Time
A video is not just a lot of images. This piece splits video understanding into three questions — which frames to take (sampling), how to mix them (temporal attention), and how to shrink a long video (compression) — and works through each with equations, interactive figures, and code.
02
·Agents·★ MEMBER·PAPER·9 min read
Paper Explained: Video-DeepResearch — Agents That Watch a Video, Then Chase Down Every Lead
A walkthrough of Video-DeepResearch, which pulls visual clues out of a video and corroborates them with web search. We follow the primary source to see how two failure modes — a modality bias that makes models dodge visual tools, and knowledge leakage that lets them answer from memory alone — are beaten with stage-wise tool unlocking and a two-phase SFT + GRPO recipe.
03
·Video Codecs·★ MEMBER·8 min read
Video Compression from Scratch — Motion Compensation and the GOP
Compressing thirty separate photographs a second gets nowhere near today's delivery bitrates. Why frame differencing breaks, what a motion vector actually carries, I/P/B frames and the GOP, and what CBR, VBR and CRF each hold constant — ending at the keyframe interval a delivery engineer has to choose.