GNOME: Identity v0.5 and Synchronized Scrolled Windows
My university studies and work revolve around image- and video-processing algorithms. I frequently need to compare similar but subtly different output videos: to see how various algorithms solving the same problem behave, or to see the progress as I’m tweaking my own algorithm.
In 2020, I made a GNOME app, Identity, to assist me. It plays multiple videos at once in sync, and lets you switch between them like tabs in a browser. This way you can easily examine the differences at any point.
Identity has seen a number of releases since then and grown a number of helpful features, like zooming or viewing media properties. And now, in v0.5, I have implemented a side-by-side comparison mode. All files are arranged in a row or a column, and their zoom and pan positions are synchronized. You can explore different parts of an image or a video and see how they look across all versions that you opened. This is a quite useful comparison mode, and also more obvious for first-time users.