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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.
Not sure if this is the ideal solution but alcro might work for this. It's basically a bit like Electron apps but it uses an already installed Chromium browser to avoid the whole bloat of shipping and extra copy of Chrome. I used it recently in a project and it works quite well. I guess it might be a bit overkill for your use case but it shouldn't be too hard to get Chromium to play a video. The only issue is that it requires users to have a Chromium based browser installed but since you seem to be targeting Windows this shouldn't be an issue since it works with Edge.