One of the "tiny" details is embedding the Flash object. The JavaScript file flashmoviecheck.js does exactly this, and other stuff. It also checks for Flash plug-ins, and minimum player version. It is different than the sound-based flashsoundcheck.js in that the dimensions should be adjusted to the movie size. We use the 100% value for both WIDTH and HEIGHT. We also changed the default quality to "high". Here is the code:

winIEpass = ((navigator.appName.indexOf("Microsoft") != -1) && 
  (navigator.appVersion.indexOf("Windows") != -1)) && 
  (parseFloat(navigator.appVersion) >= 4) ? true : false;

NNpass = ((navigator.appName == "Netscape") && 
  (navigator.userAgent.indexOf("Mozilla") != -1) && 
  (parseFloat(navigator.appVersion) >= 4) && 
  (navigator.javaEnabled())) ? true : false;

  supportedBrowser = (winIEpass || NNpass) ? true : false;

// check for Flash Plug-in in Mac or Win Navigator. Get plug-in version.

minPlayer = 4;
var mySwf;

function Flash_checkForPlugIn() {
  var plugin = (navigator.mimeTypes &&
  navigator.mimeTypes["application/x-shockwave-flash"]) ?
  navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin : 0;
  if (plugin) {
    var pluginversion = parseInt(plugin.description.substring(plugin.description.indexOf(".")-1)) 
    if(pluginversion >= minPlayer) {return true;}
  }
  return false;
}

// vbscript check for Flash ActiveX control in windows IE
if(supportedBrowser && winIEpass) {
  document.write(
    '<script language=VBScript>' + '\n' +
    'Function Flash_checkForActiveX()' + '\n' +
    'Dim hasPlayer, playerversion' + '\n' +
    'hasPlayer = false' + '\n' +
    'playerversion = 10' + '\n' +
    'Do While playerversion >= minPlayer' + '\n' +
    'On Error Resume Next' + '\n' +
    'hasPlayer = (IsObject(CreateObject(\"ShockwaveFlash.ShockwaveFlash.\" & playerversion & \"\")))' + '\n' +
    'If hasPlayer = true Then Exit Do' + '\n' +
    'playerversion = playerversion - 1' + '\n' +
    'Loop' + '\n' +
    'Flash_checkForActiveX = hasPlayer' + '\n' +
    'End Function' + '\n' +
    '<\/script>'
  );
}

function Flash_checkForMinPlayer() {
  if(!supportedBrowser) return false;
  if(NNpass) return (Flash_checkForPlugIn());
  if(winIEpass) return (Flash_checkForActiveX());
}

function Flash_embedSWF(srcURL, swfbgColor) {

  if (!Flash_checkForMinPlayer()) return;

  var defaultColor = (document.bgColor != null) ? document.bgColor : "#ffffff";
  var bgcolor = (swfbgColor != null) ? swfbgColor : defaultColor;
  document.writeln(
    '<OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"' +
'codebase="http://active.macromedia.com/flash2/cabs/swflash.cab#version=4,0,0,0"' +
    'ID="sonify" WIDTH="100%" HEIGHT="100%">' +
    '<PARAM NAME="movie" VALUE="' + srcURL + '">' + 
    '<PARAM NAME="quality" VALUE="high">' +
    '<PARAM NAME="wmode" VALUE="transparent">'+
    '<PARAM NAME="autostart" VALUE="false">'+
    '<PARAM NAME="bgcolor" VALUE=' + bgcolor + '>' +
    '<embed src="' + srcURL + '" quality="high"' + 'bgcolor="' + 
    bgcolor + '"' + 'width="100%" height="100%"' +
    'type="application/x-shockwave-flash" NAME="sonify"' +
 'pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash"></embed></OBJECT>');

  window.document.sonify.Rewind();
}

function sonified_flash(myFrame){
  if(!Flash_checkForMinPlayer()) {return;}

  mySwf = window.document.sonify;
  if (mySwf.PercentLoaded()<100) return

  mySwf.GotoFrame(myFrame);
  mySwf.GotoFrame(0);
}

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