feat(api): allow to pass videos to backends #5967

Job	Run time
tests-diffusers	1m 53s
tests-diffusers	1m 53s
tests-rerankers	2m 22s
tests-rerankers	2m 22s
tests-sentencetransformers	2m 34s
tests-sentencetransformers	2m 34s
tests-transformers	3m 0s
tests-transformers	3m 0s
tests-coqui	2m 44s
tests-coqui	2m 33s
tests-openvoice	3m 34s
tests-openvoice	3m 10s
tests-parler-tts	3m 29s
tests-parler-tts	3m 29s
tests-transformers-musicgen	3m 32s
tests-transformers-musicgen	3m 32s
tests-vallex	2m 54s
tests-vallex	2m 54s
	51m 29s

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