The new iview app is for Samsung Tizen (2016 and later), Hisense (2017 and later) and LG WebOS (1.0 and above) TVs.
Improvements include support for adaptive streaming (giving better and more consistent video), HD streaming of certain programs, simplified navigation, and access to all ABC TV live streams.
There is also provision for linking the TV to the viewer's ABC account to allow synchronisation across multiple devices.
The new app will be made available for HbbTV/FreeviewPlus devices, PlayStation 4 and Xbox One in the near future.
Planned improvements to iview include an improved search facility as well as personalised recommendations powered by ABC's internally developed engine.
"This is a fantastic piece of teamwork. We're continuing to strengthen the foundations for ABC iview and enhance our audience's experience. Out of this work has come a raft of exciting new functionality such as adaptive streaming, watchlists and login on any device so users can watch ABC content from where they left off – all made available to a large proportion of our ABC iview audience," said ABC chief digital and information officer Helen Clifton.
"It means another innovative step forward for the ABC and makes our outstanding and distinctive content even more accessible to audiences."