When I run commercial flagging the log file seems to indicate that it worked.

2005-10-13 17:10:59.219 Starting Commercial Flagging for "Stargate SG-1" recorded from channel 1057 at Thu Oct 13 17:03:00 2005.
QSettings: error creating /.qt
QSettings: error creating /.qt
2005-10-13 17:10:59.416 New DB connection, total: 1
2005-10-13 17:10:59.427 New DB connection, total: 2

2005-10-13 17:14:13.630 Finished, 2 break(s) found.


But when I go into edit mode to view where the cuts were made there is just a solid blue line. No cuts shown.

I've tried using every option for flagging commercials (blanks, logos, etc). The status may give a different number of cuts depending on method but actually no cuts show in edit mode. Commercials really are not being flagged.

What is going on?

http://www.mythtv.org/docs/mythtv-HOWTO-11.html
Scroll down to "Watching a recording only" and under that "In edit mode".

The "why" has to do with the fact that commercial marking is far from an exact science. It's best to regard the marks as suggestions. For some channels I always load the marks with confidence that they'll be pretty close to right, for others it's really hit or miss, and sometimes even mostly miss.

DUH! The mighty "Z" key. <slinks off red faced into the fog>

Thanks!

That one is moderately obscure, and while the reasoning behind it is sound it's not necessarily obvious.

I always figured you should be able to identify commercials by the volume suddenly increasing by 50% and staying there , but apparently that's not any more reliable than blank frame identification, and nothing is really perfect.