Since the latest Update to Version 1.2.4099 of Doggcatcher it it not possible to play a video podcast using an external player any more.
Long pressing on the episode is disabled. That's supposed to be a feature and not a bug, although I'd prefer to have the long-press for the context menu.
Using the three dots does not show the item "Play in external player".
It does work with audio podcasts, but not with video podcasts.
Thanks for reporting the problem, Eric will respond later about this issue.
Yup, that's a bug. I get that fixed in the release after next.
http://mantis.doggcatcher.com/view.php?id=2068
Thanks for letting me know.