Improve video recording quality and simplify native library loading #37

Job	Run time
Ubuntu \| NDK-r27c \| cmake \| with-ffmpeg \| 16kb	3m 14s
Ubuntu \| NDK-r26d \| ndk-build \| no-ffmpeg \| 4kb	2m 14s
Lint	1m 11s
	6m 39s

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