I made this because I would download a lot of videos from Youtube to watch on my phone using VLC. Most of the videos I downloaded were from video game streams,

I made this because I would download a lot of videos from Youtube to watch on my phone using VLC. Most of the videos I downloaded were from video game streams, and I wanted to constrain the video to just the gameplay (cropping the frame to just the game and trimming the timeline to ignore anything before/after). It got tedious to do this manually, so I made a tool to speed things up. The video editing and streaming is CPU and bandwidth intensive. If you want to use this a lot, you're better off using your own server (there are 1-click deploys to both Heroku and Digital Ocean along with a link to the Dockerfile and source), but I've added a link to a demo server if you just want to try it out. Depending on how much use this gets, performance might go down the drain.