Total noob and no idea what I'm doing. But tried to record a .m3u8 stream using Livestreamer which fails. The list of *.ts streamed video chunks shown by the browser inspect are at the bottom of this post. Is there another way to do this using VLC media player maybe?
c:\> livestreamer
"https://gumroad.com/r/5f9b207d2c50f31d5713cf3d687c2768/iRMYo0fuV5IdvPdb0DzUbw==/index.m3u8" best -o 480p.ts
error: No plugin can handle URL: https://gumroad.com/r/5f9b207d2c50f3...w==/index.m3u8
# contents of index.m3u8 >>
#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=2800000,RESOLUTION=1920x1080,CODECS ="avc1.4d0028,mp4a.40.2"
https://d1bdh6c3ceakz5.cloudfront.ne...H5PKOS7WQUJ6SA
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1541000,RESOLUTION=1280x720,CODECS= "avc1.4d001f,mp4a.40.2"
https://d1bdh6c3ceakz5.cloudfront.ne...H5PKOS7WQUJ6SA
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=873000,RESOLUTION=854x480,CODECS="a vc1.4d001f,mp4a.40.2"
https://d1bdh6c3ceakz5.cloudfront.ne...H5PKOS7WQUJ6SA
# stream >>
https://d1bdh6c3ceakz5.cloudfront.ne...H5PKOS7WQUJ6SA
# stream >>
https://d1bdh6c3ceakz5.cloudfront.ne...H5PKOS7WQUJ6SA
# stream >>
https://d1bdh6c3ceakz5.cloudfront.ne...H5PKOS7WQUJ6SA
# stream >>
https://d1bdh6c3ceakz5.cloudfront.ne..._480p_00000.ts
https://d1bdh6c3ceakz5.cloudfront.ne..._480p_00001.ts
...hls_480p_00002.ts
...hls_480p_00003.ts
... etc.