The jwplayer getDuration function functions correctly in the Chrome console, but it encounters issues when used in C# alongside IJavaScript

Question

The jwplayer getDuration function functions correctly in the Chrome console, but it encounters issues when used in C# alongside IJavaScript

I am encountering an issue with the getDuration command in jwplayers. I suspect that it might be related to a translation problem between C#'s javascript executor. Any help or insights are greatly appreciated.

Here is the problematic C# code:

IJavaScriptExecutor executor = ( IJavaScriptExecutor )Driver;
                    executor.ExecuteScript( "jwplayer().seek(jwPlayer().getDuration());", "" );

And here is the working Javascript code that functions properly in Chrome Console:

jwplayer().seek(jwPlayer().getDuration())

The above code executes as expected.

executor.ExecuteScript( "jwplayer().seek(45);", "" );

However, when running this next piece of code, it fails:

executor.ExecuteScript( "jwplayer().getDuration();", "" );

Upon execution, I encounter the following error message:

unknown error: Runtime.evaluate threw exception: TypeError: Cannot read property 'click' of null

(Session info: chrome=35.0.1916.153) (Driver info: chromedriver=2.10.267521,platform=Windows NT 6.1 SP1 x86_64)

c#javascript google-chrome selenium-webdriver jwplayer

Answer 1

Answer №1

It seems there may be an issue with how the executor interprets and returns the data.

I personally encountered a problem while attempting to retrieve the time duration in Jwplayer. I discovered that jwplayer().getDuration functions correctly only when used within specific events like onReady, onPlay, and onTime. If you try to access it outside of these events before the player is ready, it won't return any value.

To better understand this behavior, I created four instances of Jwplayer, some with events and some without.

You can observe this behavior here on

JSFiddle - http://jsfiddle.net/hiteshbhilai2010/6YyXH/20/

Below is the same code as used in JSFiddle:

jwplayer('player').setup({

            file: 'http://video-js.zencoder.com/oceans-clip.mp4',
            primary:'html5',
            stretching: 'exactfit',         
            autostart: true,

        });     

jwplayer('player2').setup({

            file: 'http://video-js.zencoder.com/oceans-clip.mp4',
            primary:'html5',
            stretching: 'exactfit',         
            autostart: true,

        }); 
jwplayer('player3').setup({

            file: 'http://video-js.zencoder.com/oceans-clip.mp4',
            primary:'html5',
            stretching: 'exactfit',         
            autostart: true,

        }); 
jwplayer('player4').setup({

            file: 'http://video-js.zencoder.com/oceans-clip.mp4',
            primary:'html5',
            stretching: 'exactfit',         
            autostart: true,

        });
var time1  = jwplayer('player').getDuration();
$("#player_time1").text(time1);//won't display anything

jwplayer('player2').onReady(function(){
var time2  = jwplayer('player2').getDuration();
$("#player_time2").text(time2);//will show duration as -1

});

jwplayer('player3').onPlay(function(){
var time3  = jwplayer('player3').getDuration();
$("#player_time3").text(time3);//will show duration as -1
// but clicking play and pause will display the correct time
});

jwplayer('player4').onTime(function(){

var time4  = jwplayer('player4').getDuration();
 var time45 = jwplayer('player4').getPosition()
$("#player_time4").text(time4);//it works 
    $("#player_time45").text(time45);//it works 
});

I hope this information proves to be helpful :)

Answer 2

It seems there may be an issue with how the executor interprets and returns the data.

I personally encountered a problem while attempting to retrieve the time duration in Jwplayer. I discovered that jwplayer().getDuration functions correctly only when used within specific events like onReady, onPlay, and onTime. If you try to access it outside of these events before the player is ready, it won't return any value.

To better understand this behavior, I created four instances of Jwplayer, some with events and some without.

You can observe this behavior here on

JSFiddle - http://jsfiddle.net/hiteshbhilai2010/6YyXH/20/

Below is the same code as used in JSFiddle:

jwplayer('player').setup({

            file: 'http://video-js.zencoder.com/oceans-clip.mp4',
            primary:'html5',
            stretching: 'exactfit',         
            autostart: true,

        });     

jwplayer('player2').setup({

            file: 'http://video-js.zencoder.com/oceans-clip.mp4',
            primary:'html5',
            stretching: 'exactfit',         
            autostart: true,

        }); 
jwplayer('player3').setup({

            file: 'http://video-js.zencoder.com/oceans-clip.mp4',
            primary:'html5',
            stretching: 'exactfit',         
            autostart: true,

        }); 
jwplayer('player4').setup({

            file: 'http://video-js.zencoder.com/oceans-clip.mp4',
            primary:'html5',
            stretching: 'exactfit',         
            autostart: true,

        });
var time1  = jwplayer('player').getDuration();
$("#player_time1").text(time1);//won't display anything

jwplayer('player2').onReady(function(){
var time2  = jwplayer('player2').getDuration();
$("#player_time2").text(time2);//will show duration as -1

});

jwplayer('player3').onPlay(function(){
var time3  = jwplayer('player3').getDuration();
$("#player_time3").text(time3);//will show duration as -1
// but clicking play and pause will display the correct time
});

jwplayer('player4').onTime(function(){

var time4  = jwplayer('player4').getDuration();
 var time45 = jwplayer('player4').getPosition()
$("#player_time4").text(time4);//it works 
    $("#player_time45").text(time45);//it works 
});

I hope this information proves to be helpful :)

The jwplayer getDuration function functions correctly in the Chrome console, but it encounters issues when used in C# alongside IJavaScript

Answer №1

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