MediaElement (version 2.16.4) iframe fullscreen video issue - firefox, IE11

[jalam1]

I'm using mediaelement.js version 2.16.4 to load video in an iframe created by thickbox.js. When I try to click fullscreen button in firefox-37.0.2/IE-11 the video goes to fullscreen but immediately goes back to smaller size of the iframe. If I don't initialize mediaelement and only the HTML5 tag then the fullscreen works fine in an iframe. So, it has to do something with the mediaelement player. This doesn't happen in Chrome! I have "webkitallowfullscreen mozallowfullscreen allowfullscreen" in the iframe.

Stackoverflow : http://stackoverflow.com/questions/29969335/mediaelement-version-2-16-4-iframe-fullscreen-video-issue-firefox-ie11

I found the issue of fullscreen in firefox/IE. It's the following code in mediaelement-and-player.js where there is a manual exit from fullscreen. For me the 'zoomMultiplier' variable is 1.25 which is causing the problem.

if (t.isInIframe) {
// sometimes exiting from fullscreen doesn't work
// notably in Chrome <iframe>. Fixed in version 17
setTimeout(function checkFullscreen() {

                    if (t.isNativeFullScreen) {
                        var zoomMultiplier = window["devicePixelRatio"] || 1;
                        // Use a percent error margin since devicePixelRatio is a float and not exact.
                        var percentErrorMargin = 0.002; // 0.2%
                        var windowWidth = zoomMultiplier * $(window).width();
                        var screenWidth = screen.width;
                        var absDiff = Math.abs(screenWidth - windowWidth);
                        var marginError = screenWidth * percentErrorMargin;

                        // check if the video is suddenly not really fullscreen
                        if (absDiff > marginError) {
                            // manually exit
                            t.exitFullScreen();
                        } else {
                            // test again
                            setTimeout(checkFullscreen, 500);
                        }
                    }


                }, 500);
            }

[rafa8626]

@jalam1 Is this still an issue?

[rafa8626]

Closing this issue since no answer has been posted in more than 2 weeks. If you'd like to reopen this, let us know. Thanks!