hevc: prefix width and height SPS variables
hevc: remove duplicated code
hevc: ignore def_disp_win only when it's respected
hevc: fix default display window parsing (thanks Yasuke)
hevc: add a generic output_window to siplify cropping
Add libx265 encoder

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Add raw HEVC muxer

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
hevc: add ts demux