There are a couple Novelas I've recorded where I missed a number of the first episodes before beginning to record them with Channels. I have found that I can watch them with Xfinity Stream over one of our Rokus or with a web browser, but I'm not sure of the best way to get them to add to the series collection if I wish to preserve.
I'm pretty sure there's no way I can record those past episodes with Channels (please confirm), so I've captured some using Bandicam, which does okay but is a fairly hands-on process and is lossy as it is not simply saving the source stream.
Years ago I used to be able to get Olympics programming with a url and a manifest using ffmpeg, and when they started breaking everything up into fragments - using AdobeHDS.php. It was tedious work, but the resulting files were amazingly high quality at very efficient filesizes. The quality was far superior to anything I saw on high definition cable.
Perhaps Channels even uses some aspects of that technique to "record" a lot of its streamed programs also.
Anyway, I'm just hoping to be able to capture the stream that's being fed to the browser via Xfinity Stream as well. I've looked into trying something like DVDFab's DRM M3U8 Downloader (Safe M3U8 Downloader | Save M3U8 Video Streams), because I wonder if that also grabs the actual stream, or if is also just doing a type of screen capture.
Does anyone have a method of doing this that works best for them?