Issues with JavaScript causing YouTube embed player to malfunction

For the past few days, I've encountered an issue where my JavaScript code to embed YouTube videos isn't working properly. The video loads but it's not playable as the play button is unresponsive. The console shows this error:

Uncaught TypeError: a.g.mX is not a function
at O_ (https://www.youtube.com/yts/jsbin/player-en_US-vfl8LqiZp/base.js:3796:24)
at new P_ (https://www.youtube.com/yts/jsbin/player-en_US-vfl8LqiZp/base.js:3791:111)
at new c2 (https://www.youtube.com/yts/jsbin/player-en_US-vfl8LqiZp/base.js:3985:268)
at new i2 (https://www.youtube.com/yts/jsbin/player-en_US-vfl8LqiZp/base.js:4005:210)
at i2.create (https://www.youtube.com/yts/jsbin/player-en_US-vfl8LqiZp/base.js:6950:321)
at zh.<anonymous> (https://www.youtube.com/yts/jsbin/www-embed-player-vflxTxlSH/www-embed-player.js:428:269)
at zh.k.lb (https://www.youtube.com/yts/jsbin/www-embed-player-vflxTxlSH/www-embed-player.js:428:308)
at Dh (https://www.youtube.com/yts/jsbin/www-embed-player-vflxTxlSH/www-embed-player.js:426:143)
at zh.k.pa (https://www.youtube.com/yts/jsbin/www-embed-player-vflxTxlSH/www-embed-player.js:419:176)
at https://www.youtube.com/yts/jsbin/www-embed-player-vflxTxlSH/www-embed-player.js:461:420

The current JS code looks like this:

document.getElementById('player').setAttribute("style","height:"+(window.innerHeight * 0.87)+"px;");
document.getElementById('youtube_frame').src="http://www.youtube.com/player_api";
    var player;
    function onYouTubePlayerAPIReady() {
            player = new YT.Player('player', {
              height: "100%",
              width: "100%",
              videoId: start_video,
              events: {
                'onReady': onPlayerReady,
                'onStateChange': onPlayerStateChange
              }
            });
    }
    function onPlayerReady(event) {

            player_ref = event.target;
            event.target.playVideo();
        }

        // when video ends
        function onPlayerStateChange(event) {        
            if(event.data === 0) {          

                event.target.loadVideoById(start_video);
            }
        }

Also, playback has unexpectedly stopped working on another project as well. Everything was running smoothly until a couple of days ago. I haven't been able to find any solutions online. Any help would be greatly appreciated.

----- UPDATE ----

Once again, embedding playback has malfunctioned:

Uncaught TypeError: a.g.setActionHandler is not a function
at M_ (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:3788:24)
at new N_ (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:3783:111)
at new a2 (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:3978:367)
at new g2 (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:3999:210)
at g2.create (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:6995:333)
at Gi.<anonymous> (https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:507:269)
at Gi.l.jb (https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:507:308)
at Ki (https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:505:143)
at Gi.l.oa (https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:498:176)
at https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:557:378
javascriptyoutubeyoutube-apiyoutube-javascript-api

Answer №1

Google has successfully resolved the issue, and now YouTube videos are playing smoothly!

I'm curious about what caused the problem in the first place.

----- UPDATE 23/02/2017 ------

Unfortunately, embedding playback is once again experiencing difficulties: 

Uncaught TypeError: a.g.setActionHandler is not a function
at M_ (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:3788:24)
at new N_ (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:3783:111)
at new a2 (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:3978:367)
at new g2 (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:3999:210)
at g2.create (https://www.youtube.com/yts/jsbin/player-en_US-vflqOi6vK/base.js:6995:333)
at Gi.<anonymous> (https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:507:269)
at Gi.l.jb (https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:507:308)
at Ki (https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:505:143)
at Gi.l.oa (https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:498:176)
at https://www.youtube.com/yts/jsbin/www-embed-player-vfl-i_LLs/www-embed-player.js:557:378

Answer №2

Encountering an issue in Chrome 56.0.2924.87 (64-bit) specifically when "experimental functions" are enabled.

base.js:7046 Uncaught TypeError: a.g.setActionHandler is not a function
at bY (https://www.youtube.com/yts/jsbin/player-ru_RU-vfleBND20/base.js:3618:24)
at new cY (https://www.youtube.com/yts/jsbin/player-ru_RU-vfleBND20/base.js:3613:111)
at new z1 (https://www.youtube.com/yts/jsbin/player-ru_RU-vfleBND20/base.js:3983:268)
at new j2 (https://www.youtube.com/yts/jsbin/player-ru_RU-vfleBND20/base.js:4044:209)
at Object.j2.create (https://www.youtube.com/yts/jsbin/player-ru_RU-vfleBND20/base.js:7045:317)
at Object.ytplayer.load (https://www.youtube.com/watch?v=n-AdoTkXwbc:241:75024)
at https://www.youtube.com/watch?v=n-AdoTkXwbc:241:75172
at https://www.youtube.com/watch?v=n-AdoTkXwbc:241:75181

To resolve, the option can be disabled at this link: chrome://flags/#enable-experimental-web-platform-features

-- UPDATE 10.03.2017 --

Chrome 57.0.2987.98 (64-bit) has been released today and is now operating smoothly!

Answer №3

It appears that the issue at hand is linked to the MediaSession object when attempting to trigger an event (specifically play). This seems to be an internal problem within Chrome, suggesting some form of corruption.

This same issue is evident across all websites utilizing YouTube, ruling out the possibility of a site-specific error. Therefore, troubleshooting your own website will not resolve the issue.

Despite rebooting and disabling extensions, I have yet to find a solution.

The purpose of this post is to prevent individuals from wasting time assuming their code is faulty.

https://i.stack.imgur.com/ttBjc.png

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