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docker-youtube-dl
Youtube-DL container with all prerequisites (libav-tools, ffmpeg, rtmpdump, mplayer, mpv)
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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.
Seems like the way this runs is by setting it up as a bash alias, so that you can run yt-dl at command line. This would basically fire up the container and then download the video. Not sure how slow/long it would be. I don't use youtube-dl, so not sure. Maybe raising an issue on the GH page might get you some pointers. I found this image as well, which looks like it is getting updated.
Some kind of dependency issue.. install opkg, probably available there?