Clarify metadata-only scope and YouTube raw media requirement

README.md

@@ -2,6 +2,19 @@
 
 Full-set metadata for lmms-eval task `ovr_kinetics`.
 
+## Dataset Contents
+
+This repository contains **annotations and metadata only** (video IDs, start/end times, repetition labels, and splits).
+Raw video files are **not hosted here**.
+
+## Raw Media Requirement
+
+To run media-backed evaluation, download original clips from YouTube/Kinetics sources using metadata fields.
+If local media is missing, full evaluation for `ovr_kinetics` cannot run.
+
 - Annotation source: https://storage.googleapis.com/semantic_repetitions/ovr_kinetics_release.json
-- Raw video location: Kinetics clips / YouTube-derived media (not embedded here).
-- Expected local media root for evaluation: `$OVR_KINETICS_VIDEO_DIR` or `$HF_HOME/ovr_kinetics`.
+- YouTube URL template: `https://www.youtube.com/watch?v=<video_id>`
+- Expected local media root: `$OVR_KINETICS_VIDEO_DIR` or `$HF_HOME/ovr_kinetics`
+- Download guide: https://github.com/EvolvingLMMs-Lab/lmms-eval/blob/main/docs/raw_media_download.md
+
+Videos are subject to YouTube Terms of Service and per-video availability.