From SD to UHD, the High Efficiency Video Coding codec also known as H.265 is predicted to change the media viewing landscape in 2015. After being formally adopted as a video compression standard in 2014 and showcased as the UHD enabler at the Consumer Electronics Show, the use of HEVC in both software and hardware could possibly make the biggest impact of any new TV technology in coming months.
“HEVC will bring not only more pixels but better ones,” said Keith Wymbs, chief marketing officer at Elemental Technologies, a Portland, Ore.-based developer of video processing technology. He is referring to the fact that the HEVC standard allows for not only greater resolution, but more color depth and a faster frame rate. All of these elements can mean big improvements in the video experience.
The improvements that HEVC will bring will not only benefit UHD viewers, but those using SD and HD content as well.
HEVC: Raising All Resolution Boats? | TvTechnology
Some new kind of testing techniques in experiment kya ?
the above ans your question, so HEVC Is possible on SD channels too.