Right, I happened to accidentally stumble across a solution for my Sony Android TV.
Highlight the show in progress in the Plex Live TV and DVR Guide, but don’t press Enter. Press the Record button on your remote control. This brings up a dialog box. Select Record to record the show in progress.
While this solution has presented itself unexpectedly for me, it does raise other questions:
-
Unless I’ve missed it somewhere, this appears to be an undocumented feature.
-
Recording a show in progress should be treated the same as future scheduled recordings. When selecting a future show, the dialog box that’s presented gives you the option to Record or Go to Show. There doesn’t appear to be any reason why this same dialog box should not also be presented for shows in progress. Currently, selecting a show in progress is treated as Go to Show.
-
The undocumented feature might work for Plex Android TV, but, of course, it does not work for Plex Android mobile. Addressing the previous point resolves the issue for both platforms.