Found this additional information in an announcement about commercial skip.
In order to be eligible for commercial skip processing, your Tablo DVR’s recordings must:
-
NOT be a Cloud DVR recording
Only recordings made on a Tablo’s internal or hard drive storage are currently supported. -
NOT be a manual recording
Manual recordings lack ‘program type’ details and therefore are ineligible -
Be completed successfully
In-progress, failed, and incomplete recordings are ineligible. - Be created AFTER commercial skip has been enabled in your Tablo’s settings screen
- Have completed Fast-Forward Preview processing successfully
Hope this helps.