For me worked, the following steps:
In Firefox
- Open F12-Tools Firefox
- Tab Network
- Refresh Page, start Video
- Filter: Media
- First File should be File like: FILE_NAME_XYZ.mp4 .m3u8
- Copy address
In VLC
- Media>Open Network Stream
- Paste address
- Choose: Convert
- Convert as h264+MP3
- Choose Location
- Confirm
Thank you MichiBack.
Have a nice day!