When using some TVs as screen, the video playback ends showing the output “HMDI 1920×1080” on the TV. How can I solve?
Best way to avoid this tedious issue should be supressing TV output, but not always it is possible.
While having videos at the same resolution, you can try setting the Linux framebuffer resolution equal to the videos resolution. Please have al look at this resource.
If you slide one video only, you can instruct omxplayer to loop the video.