OK i finally found the praveen thing what i said about:
So looks like it is not dmabuff-video_gst.video.1.24, but keeping clapper video-decode-hantro working under gles3-like on Librem5 in Mobian. I just didnt remembered myself well.
So what i know LVideo player support dmabuffvideo(newer fancy feature), i not sure about Clapper ATM.