test output_format in video datasets #1013

Job	Run time
linux (linux.12xlarge, cpu) / linux-job	3m 44s
linux (linux.g5.4xlarge.nvidia.gpu, cuda, 11.8) / linux-job	8m 40s
macos (macos-12) / macos-job	1m 28s
macos (macos-m1-12) / macos-job	1m 23s
windows (windows.4xlarge, cpu) / windows-job	1m 46s
windows (windows.g5.4xlarge.nvidia.gpu, cuda, 11.8) / windows-job	27s
	17m 28s

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