It works and will download videos, but it will only download the AVC (MP4) version of videos. For example, YouTube primarily uses VP9 and Opus codecs for their higher quality streams now, but this will not download those versions and will instead download H.264 and AAC versions, meaning they are lower quality as a result. So while it works and downloads YouTube videos, it will not be pulling in the best possible stream despite having selected the resolution I wanted in the video player first.