Download a stream .m3u8 .ts fragments

For me worked, the following steps:

In Firefox

  1. Open F12-Tools Firefox
  2. Tab Network
  3. Refresh Page, start Video
  4. Filter: Media
  5. First File should be File like: FILE_NAME_XYZ.mp4 .m3u8
  6. Copy address

In VLC

  1. Media>Open Network Stream
  2. Paste address
  3. Choose: Convert
  4. Convert as h264+MP3
  5. Choose Location
  6. Confirm

Thank you MichiBack.
Have a nice day!