Expert Need for google cloud API subtitles captions in any language

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Expert Need for google cloud API simple api to do the subtitles captions in any language. Must have experiences in this specific api. Same as google use in the youtube one. if a user clicks a video it should translate in any language what the speaker says cc so need to add subtitles to CC in a website videos will need to let me know the price how much google charge for it.
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