I'm trying to
Everything works but the start time, instead of starting at 05:45 am the next day it starts immediately. What did I miss?
bash -c "streamlink --stdout https://www.youtube.com/watch?v=XOacA3RYrXk 720p | tee /tmp/water_vid/water_video-$(date +"%H:%M_%m-%d-%Y").mkv | vlc -" | at 05:45 am
You need to write the commands, not their output
echo "streamlink --stdout https://www.youtube.com/watch?v=XOacA3RYrXk 720p | tee /tmp/water_vid/water_video-$(date +'%H:%M_%m-%d-%Y').mkv | vlc -" | at 05:45 am