Test

Solve the problem of inaccurate HLS TS duration #1393

Job	Run time
cygwin64-cache	4m 17s
multiple-arch-aarch64	9m 47s
utest-regression-blackbox-test	5m 56s
multiple-arch-armv7	11m 22s
cygwin64	8m 11s
fast	1s
build-ubuntu20	3m 15s
build-ubuntu16	2m 20s
build-cross-aarch64	7m 9s
build-centos7	3m 30s
build-cross-arm	7m 17s
build-ubuntu18	2m 15s
coverage	3m 22s
multiple-arch-amd64	1m 49s
test-done	1s
	1h 10m 32s

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