> For the complete documentation index, see [llms.txt](https://doc.thordata.com/doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.thordata.com/doc/faq/product-problem/dataset/video-dataset/what-fields-does-video-semantic-search-need.md).

# What fields does video semantic search need?

Titles, descriptions, subtitles or transcripts, tags, and thumbnail URLs, plus plays and engagement metrics as ranking weights — enough to embed, index, and serve semantic search and video question answering; not for visual embeddings or frame-level labels. Thordata's [video datasets](https://www.thordata.com/?ls=community\&lk=proxyip) ship these fields in JSON/CSV/Parquet.