I posted here a few weeks ago about a webview app that someone had written to allow viewing Spectrum streams on Android/FIre TV devices. For those that don't know, Spectrum doesn't officially support those devices, I suspect due to exclusivity deals. I've since made some changes to the app myself to make it more useful for HDMI capture with Channels and similar DVRs. The main changes are to allow "tuning" to specific channels programatically via ADB and to automatically dismiss the "Still There?" dialog that pops up every 4 hours.
You can find my source code at GitHub - gigem/SpectrumTV_webview: Spectrum TV App for Android TV platform . The original author helped me create my changes but has not yet pulled them into his version. If anyone wants to try this and isn't able to build theire own apk, let me know and I'll try to include a prebuilt one.
Finally, there is one known issue. The app occasionally crashes causing a return to the home screen. In my testing, this only seemed to happen while viewing Bally Sports Southwest. I spent the better part of the last week trying to find the cause of the problem but was unsuccessful.
Unfortunately, I'm not able do any more testing for the next month or so as I cancelled my Spectrum service. I hopeto sign back up when the Disney and Bally Sports issues are resolved and I qualify for new user pricing again.