Any web hacker can copy Twitter video into PC storage?

I think youtube-dl (and the somewhat popular fork yt-dlp) can do this.

You don't have to be an expert on "web stuffs" to benefit from it -- the very active communities around these tools are doing that research for you! -- but you do have to install software not through an app store, a skill that I hear quite a few people aren't picking up these days.

Despite the name, youtube-dl includes code to support downloading videos from hundreds of different web sites.

I use yt-dlp, save as mp4, and sometimes I just want a smaller video, so -f 'bv*[height<=640]+ba/b[height<=640] option works for me.

yt-dlp --verbose -S res,ext:mp4:m4a --merge-output-format mp4 --no-mtime -o name_of_file.mp4 https://twitter.com/url/xxxx

Also for a web click

https://www.savetweetvid.com/

There are extensions that can do this for pretty much every web browser. Pretty sure developer tools can just find it in the source... Really ain't hard.

There are bots that do this for you. Just reply to the tweet with the video with "@downloaderbot" or something else and the bot replies with a DL link.

Out of curiosity, what are you trying to accomplish by getting the videos?