Greasy Fork is available in English.
Download YouTube videos. Video formats are listed at the top of the watch page. Video links are tagged so that they can be downloaded easily.
Hi, I encountered a similar problem but with a blurry effect around the video. I fixed it by clicking on the cog wheel and disabling ambient mode. Hope this helps.
脚本只显示几秒钟后就就消失不见了
The script is displayed for only a few seconds before disappearing.