Why did the parent get voted down? This seems like a reasonable question to me. I sometimes have trouble getting smooth playback of H264 on my Linux systems due to the GPU driver not being as advanced as the Windows version. It sounds like H265 will require even more powerful graphics processing. Will I need a newer, more powerful video card? Will I be able to play this format on Linux at all, or will I have to wait a couple of years till the driver support for hardware acceleration catches up?