This video demonstrates, step-by-step, how to build a mobile video chat application for Android in under nine minutes.

 

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    JEONG PHIL JUN

    hi. there.  네이버 Papago (NAVER Papago)

    I succeeded in making an example out of that video clip.
    However, during Preview, video is produced but no audio is produced.
    I wonder what to do to make it sound during Preview.
    Can you answer that?

     

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