- If I click on the "Keep Forever" option, does it prevent deleting?
I honestly don't know the exact answer to this one. I'm not sure if it disallows deletion, or only preserves it from automatic deletion when you have various "keep" options enabled.
- Are there any instructions to reference for the "Edit Commercials" option?
When you select this option, it presents a window with segments processed by the commercial detection program (comskip
). Within each segment, thumbnails are shown, along with why that particular segment was deemed to be a commercial or program. Those sections with a checkmark and green background are the program, and the unchecked segments are commercials. After you have made changes (such as correcting some erroneously flagged commercials), then click save at the bottom. Now when the program is viewed, the new commercial markers are used.
- I think I understand what "Refresh Metadata" does, but is there a common use for this?
Maybe not "common", but sometimes the guide data was incomplete when a program aired. Or perhaps the program's poster/image has changed because of a new season. In those cases you can use this option to ensure that the selected episode has the latest/correct metadata.
- What does "Regenerate Video Index" do?
IIRC, this is related to transcoding and/or remote streaming. Last year there were quite a few changes made to how remote streaming and transcoding was handled, and this was a way to ensure that older recordings would work the newer features that were introduced. In general, it's not something that you will probably ever need to use.