Methods and systems for compression that maintains parameters related to uncompressed video (PRTUV) while changing video compression ratios on-the-fly. One embodiment of a system includes: A video transmitter that receives incoming high-definition uncompressed video (HD-UV) characterized by certain PRTUV. The video transmitter compresses the incoming HD-UV into a first compressed video of ratio between 1:1 and 5:1, and sends it over a communication link to a receiver that decompresses the video to an outgoing HD-UV. When the video transmitter receives a command to smoothly change on-the-fly the compression to a second compressed video of ratio between 2:1 and 10:1, it makes the change without interrupting the continuous flow of the incoming HD-UV. Wherein the outgoing HD-UV maintains the PRTUV before, during, and after the change from the first compressed video to the second compressed video.