ffmpeg

FFmpeg is a complete, cross-platform solution to record, convert and stream audio and video. It includes libavcodec - the leading audio/video codec library.

http://www.ffmpeg.org/

HEVC/H.265 codec

http://www.redsharknews.com/technology/item/580-hevc-h265-everything-you-need-to-know?utm_source=www.lwks.com+subscribers&utm_campaign=c8be8d49dd-RSN_Weekend_17_Mar_28&utm_medium=email