We added a new flipbook inspector tool inside of our latest update today! Now you can view your generated flipbook textures within EmberGen and preview their animations right within the tool too. So if you have a looping flipbook, you can ensure that the loop is perfect before you save the texture and try it out in game. We still need to add playback speeds and such, but this is a great first step towards our full on sprite viewer viewport with shading etc.
Controls: Click a sprite frame to zoom in/out, press P to play/pause, use Left/Right arrow to step through the flipbook in either direction when paused.