Cfcontent IIS and particular mime types

Question

I have an application this is using flowplayer to play various video files. The video files are passed to flowplayer using a cfm script with the cfcontent tag. What I am finding is that for some file types this process fails; the player hangs and the video doesn't play. An example file type is mp4. The problem is specific to our server running IIS 6. On my local box I have Apache installed and the script works fine for mp4 files. I have the mp4 mime type defined in IIS 6 as "video/mp4" and that is what I use in the type attribute of the cfcontent tag. (I've also tried "video/mpeg" without success.) If I change my process so that I pass the file directly to flowplayer then it plays fine on IIS 6. Here is the basic code I have for providing the file.
<cfdirectory directory="#fileDir#" action="list" filter="#getAllFileInfoRet.result.file_name#" name="dirFileInfo" />
<cfif dirFileInfo.recordcount gt 0>
    <cfheader name="Content-Length" value="#dirFileInfo.size#">
</cfif>
<cfheader name="Expires" value="Thu, 19 Nov 1981 08:52:00 GMT">
<cfset tz = GetTimeZoneInfo() />
<cfset gmtNow = DateAdd("h",tz.utcHourOffset,Now()) />
<cfheader name="Last-Modified" value="#DateFormat(gmtNow,"ddd, d mmm yyyy")# #TimeFormat(gmtNow,"hh:mm:ss")# GMT">
<cfheader name="Content-Disposition" value="attachment;filename=#getAllFileInfoRet.result.file_name#">
<cfheader name="Content-Type" value="#getAllFileInfoRet.result.file_ext_mime#">
<cfheader name="Cache-Control" value="no-store, no-cache, must-revalidate, post-check=0, pre-check=0">
<cfheader name="Pragma" value="no-cache">
<cfcontent deletefile="false" file="#fileDir##getAllFileInfoRet.result.file_name#" type="#getAllFileInfoRet.result.file_ext_mime#" />
I've tried various combinations of the cfheader tags without having any effect. If anyone has some suggestions or has encountered something similar, I'll take whatever help I can get.

Answer 1

Hi Adam,
In the end, the only way that I could get it to work in all browsers was to create a temporary file.  However, the cfheader info was useful, so thanks.
Michael
Code I used:
<cffile action="write"
file="#GetTempDirectory()#/#varFileName#"
        output="#structDocument.Filecontent#"
>
<!--- Output doc --->
<cfheader name="Content-Disposition" value="#var_content_dis#">
<cfheader name="Content-Length" value="#var_content_len#">
<cfcontent type="#var_content_type" file="#GetTempDirectory()#/#varFileName#">