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const backBtnClick = function(event) {
    if (player != null && player.liveTracker) {
        toggleBackButtons(false);
        let seekable = player.seekable();
        let backTime = -1;
        if (event.target.id.indexOf("10") !== -1) {
            backTime = player.currentTime() - 10;
        } else if (event.target.id.indexOf("30") !== -1) {
            backTime = player.currentTime() - 30;
        }
        if (backTime < 0) {
            backTime = seekable ? seekable.start(0) : player.currentTime();
        }
        player.currentTime(backTime);
    }
}

const liveBtnClick = function() {
    if (player != null && player.liveTracker) {
        player.liveTracker.seekToLiveEdge();
        toggleBackButtons(true);
    }
}

const stopBtnClick = function() {
    if (player != null) {
        console.log("Stop VideoJS player");
        stopLiveUITimer();
        player.dispose();
    }
    onStopped();
}