From an HDHomeRun to VLC I can capture screenshots, but not from MythTV. I searched here and MythTV Users, but didn't find a satisfactory answer. Apparently you can disable XV and use a screen capture utility, but that throttles the CPU. I would like to grab screens like you can in VLC and MPlayer. Does anyone know how to do this? I still plan to ask the MythTV User community once my request to that email list goes through.

From an HDHomeRun to VLC I can capture screenshots, but not from MythTV. I searched here and MythTV Users, but didn't find a satisfactory answer. Apparently you can disable XV and use a screen capture utility, but that throttles the CPU. I would like to grab screens like you can in VLC and MPlayer. Does anyone know how to do this? I still plan to ask the MythTV User community once my request to that email list goes through.

Use the telnet interface.
http://www.mythtv.org/wiki/index.php/Telnet_socket
http://www.mythtv.org/docs/mythtv-HOWTO-11.html#ss11.6
play save screenshot FILENAME