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cbird
Command-line program for managing a media collection, with focus on Content-Based Image Retrieval (Computer Vision) methods for finding duplicates.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Take a look at cbird. The video indexer is pretty fast IMO. There are some bonus features for batch moving files/renaming without breaking the index. You will have to start by getting all candidate files under the same parent directory (i.e. not separate disks/volumes), either by using links or moving stuff around.
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