Thanks for reaching out to us, I think you are mentioning video retrieval using vectorization (version 4.0 preview) as this document - https://learn.microsoft.com/en-us/azure/ai-services/computer-vision/how-to/video-retrieval
Azure AI Spatial Analysis Video Retrieval APIs are part of Azure AI Vision and enable developers to create an index, add documents (videos and images) to it, and search with natural language. Developers can define metadata schemas for each index and ingest metadata to the service to help with retrieval. Developers can also specify what features to extract from the index (vision, speech) and filter their search based on features.
There are several requirements as below screenshot -
More information please refer to the document here - https://learn.microsoft.com/en-us/azure/ai-services/computer-vision/how-to/video-retrieval#use-video-retrieval-apis-for-metadata-based-search
I hope it helps.
Regards,
Yutong