@wkufan92 @snowcat @Jestep @ShadowsPapa
On thumbnail generation:
Thumbnails will not be generated unless there's an available tuner ready for the process. If/when there is a tuner available, it's roughly a matter of a few minutes per recording.
One thing to keep in mind here, while you may not be actively watching a live TV stream, remember the Tablo keeps a tuner spun up for one hour after you've tuned to it for easier and faster switching.
This is a bit of a corner case, but the key here to remember is that if you've turned to a live TV stream in the last hour, it's going to be keep that tuner running in the background at a higher priority than thumbnail generation.
Thumbnails can fail to generate entirely, though. If there's packet loss or bit errors in the recording (which could lead to video corruption) it can invalidate the thumbnail generation process entirely for that recording.
Remember that thumbnails are only supported on the Tablo Roku channel and on http://my.tablotv.com/
. They won't appear on any other devices. Are your thumbnails showing up on the devices mentioned above?