Merge pull request #3327 from metalefty/openh264 #2238

Job	Run time
cppcheck	3m 55s
code formatting check	47s
min features with gcc	3m 9s
min features with g++	2m 20s
min features with clang	2m 56s
max features with gcc	4m 28s
max features with g++	2m 27s
max features with clang	5m 8s
max features with clang and AddressSanitized	3m 41s
max features with gcc and DEBUG	2m 49s
max features with gcc for 32-bit arch (legacy OS)	1m 52s
max features with g++ for 32-bit arch (legacy OS)	2m 6s
max features with clang for 32-bit arch (legacy OS)	2m 56s
	38m 34s

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