DTH is now being superseded by Edge, Groovy integrations are currently being switched off in favour of the new integration
If you are a developer i would suggest you ask development questions in the developer section for more information
As i mentioned above currently the only way of video streaming is via a c2c integration or using @TAustin driver inked above
The Smartthings platform at present does not support camera integration easily, Smartthings edge offers new possibilities but is still not agile enough to keep up with developers and there requirements, sadly it also true that requested changes and features rarely happen or happen slowly