Update x264 encoding parameters #437

Job	Run time
code formatting check	21s
cppcheck	19m 21s
min features with gcc	2m 34s
min features with g++	3m 13s
min features with clang	3m 5s
max features with gcc	3m 46s
max features with g++	3m 2s
max features with clang	4m 3s
max features with clang and AddressSanitized	3m 6s
max features with gcc and DEBUG	3m 5s
max features with gcc for 32-bit arch (legacy OS)	2m 9s
max features with g++ for 32-bit arch (legacy OS)	1m 48s
max features with clang for 32-bit arch (legacy OS)	2m 9s
	51m 42s

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