Video Paused when change Activity in Andorid Studio

Question

I have 2 Activities: Countdown Activity and Video Activity

I wanna the video play automatically after the countdown

Countdown Activity > Video A Activity > Countdown Activity > Video B Activity > Countdown Activity > Video C Activity

The first Video, it can play properly after countdown. But, Second and third one just paused and not play automatically after the countdown.

This is what I do for the Intent in Countdown Activity.

if (typeActivity == FIRST_VIDEO_START){
                    VideoActivity.launchIntent(selectedVideo, this@CountdownActivity)
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                } else {
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                }

Any suggestion Guys ? Thanks in Advance