Rivet 2.3 was released today. You can now specify an image to use as a thumbnail instead of the QuickLook generated thumbnail. To set the image you want to use, add a custom icon to the movie file. Do this by getting info on the file in the finder and then pasting the image you want to use onto the icon in the top left corner of the info pane. Rivet will now load this icon instead of generating a thumbnail with QuickLook for you.
Thumbnails have also been enhanced with a new system that manages their caching to provide better performance and disk utilization.
Navigation has also been enhanced with the addition of smart sorting. Titles will no longer include the common words the, a, and an when sorting.
In addition to Xbox 360 and PS3 support, Rivet 2.3 adds official support for the CEIVA Pro 80 picture frames from CEIVA Logic Inc., Denon audio/video receivers, and Plex Media Center for OS X. Rivet 2.3 also adds a number of speed and performance enhancements that greatly improve parsing of the users media libraries and streaming.
The update can be download from here
