Frequently asked questions

Which FLV version ?

The FLV must be at version 1.1. Remember to convert youtube, dailymotions videos... otherwise you wouldn't see any progress bar, loop...

A free Open Source (BSD license) software allows to add the required information to FLV 1.0 videos : FLVTOOL2.

Adobe also provides a FLV files checker.

The player displays wrong on Internet Explorer

Some problems may appear with Internet Explorer (not systematically). If the video is very small, it is necessary to force the size of the SWF with the width and height parameters, for example :

<object type="application/x-shockwave-flash" data="player_flv.swf" width="200" height="150">
     <param name="movie" value="player_flv.swf" />
     <param name="FlashVars" value="flv=test.flv&amp;width=200&amp;height=150" />

Subtitles doesn't show

When the URL of the FLV is in a different domain, the srt files are not loaded; this is a security of the Flash Player. It is necessary to create a crossdomain.xml file at the root of the site hosting the video. It must contain the domains authorized to load the srt files.

If the player is hosted on and loads the video on, it is necessary to create the following XML file ( :

<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "">
     <allow-access-from domain="" secure="false" />

Fullscreen doesn't work

Fullscreen only works with Flash Player newer than 9.0.16.

Fullscreen is not compatible with wmode transparency. So, don't use the following code:

<param name="wmode" value="transparent" />

Fullscreen still doesn't work on Linux.

What means the option showplayer ?

The option indicates the control bar:

Javascript doesn't work with Opera

With Opera, it is necessary to user the <embed>, tag, but it is not recommended.

<object id="monFlash" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase=",0,0,0" width="320" height="240">
     <param name="movie" value="player_flv_multi.swf" />
     <param name="FlashVars" value="flv=test.flv" />
     <embed name="monFlash" src="player_flv_multi.swf" flashvars="flv=test.flv" pluginspage="" type="application/x-shockwave-flash" />
function getFlashObject(movieName) {
     if (window.document[movieName]) {
         return window.document[movieName];
     if (navigator.appName.indexOf("Microsoft Internet") == -1) {
         if (document.embeds && document.embeds[movieName])
             return document.embeds[movieName];
     } else {
         return document.getElementById(movieName);
function play(index) {
     var flash = getFlashObject("monFlash");
     flash.SetVariable("player:jsPlay", index);