* 1748 Video Support in V1.0: part 3/3 : support AsfVideo
* 1748 Video Support in V1.0: part 3/3 : support AsfVideo : fix Mac Os error compile
* 1748 Video Support in V1.0: part 3/3 : support AsfVideo : delete unuseful warnings
* code review and clean up some code
* Use SPDX identifier in header files
* Use SPDX identifier in rest of source files
* Fix usage of SPDX for files with 2 licenses
* Add global license file
* Fix compilation