Vlc-record-2021-05-24-16h17m26s-index-dvr.m3u8-...

VLC is highly forgiving. Drag and drop the file directly into VLC. If it was a raw data dump, VLC might still be able to read the video frames.

Go to the top menu and click > Convert / Save (or press Ctrl + R on Windows / Cmd + R on Mac). Click the Network tab at the top. vlc-record-2021-05-24-16h17m26s-index-dvr.m3u8-...

However, live streams are different. When you press record on an .m3u8 live stream link: VLC is highly forgiving