IIS7下，使用html5的video，无法播放视频
可在虚拟目录中添加web.config文件，文件格式如下
<configuration>
<system.webServer>
<staticContent>
<mimeMap fileExtension=".mp4" mimeType="video/mp4" />
</staticContent>
</system.webServer>
</configuration>
MIME类型可视情况自行更改，一并在网上搜索了常见的MIME类型列表，附后供大家参考
文件扩展名 文件类型 (MIME)
0.323 text/h323
.aaf application/octet-stream
.aca application/octet-stream
.acx application/internet-property-stream
.afm application/octet-stream
.ai application/postscript
.aif audio/x-aiff
.aifc audio/aiff
.aiff audio/aiff
.applicati application/x-ms-application
.art image/x-jg
.asd application/octet-stream
.asf video/x-ms-asf
.asi application/octet-stream
.asm text/plain
.asr video/x-ms-asf
.asx video/x-ms-asf
.au audio/basic
.avi video/x-msvideo
.axs application/olescript
.bas text/plain
.bcpio application/x-bcpio
.bin application/octet-stream
.bmp image/bmp
.c text/plain
.cab application/octet-stream
.cat application/vnd.ms-pki.seccat
.cdf application/x-cdf
.chm application/octet-stream
.class application/x-java-applet
.clp application/x-msclip
.cmx image/x-cmx
.cnf text/plain
.cod image/cis-cod
.cpio application/x-cpio
.cpp text/plain
.crd application/x-mscardfile
.crl application/pkix-crl
.crt application/x-x509-ca-cert
.csh application/x-csh
.css text/css
.csv application/octet-stream
.cur application/octet-stream
.dcr application/x-director
.deploy application/octet-stream
.der application/x-x509-ca-cert
.dib image/bmp
.dir application/x-director
.disco text/xml
.dll application/x-msdownload
.dlm text/dlm
.doc application/msword
.dot application/msword
.dsp application/octet-stream
.dtd text/xml
.dvi application/x-dvi
.dwf drawing/x-dwf
.dwp application/octet-stream
.dxr application/x-director
.easm application/octet-stream
.eml message/rfc822
.emz application/octet-stream
.eot application/octet-stream
.eps application/postscript
.etx text/x-setext
.evy application/envoy
.ex_ application/octet-stream
.exe application/octet-stream
.fdf application/vnd.fdf
.fif application/fractals
.fla application/octet-stream
.flr x-world/x-vrml
.gif image/gif
.gtar application/x-gtar
.gz application/x-gzip
.h text/plain
.hdf application/x-hdf
.hdml text/x-hdml
.hhc application/x-oleobject
.hhk application/octet-stream
.hhp application/octet-stream
.hlp application/winhlp
.hqx application/mac-binhex40
.hsf application/octet-stream
.hta application/hta
.htc text/x-component
.htm text/html
.html text/html
.htt text/webviewhtml
.hxt text/html
.ica application/x-ica
.ico image/x-icon
.ics application/octet-stream
.ief image/ief
.iii application/x-iphone
.inf application/octet-stream
.ins application/x-internet-signup
.isp application/x-internet-signup
.IVF video/x-ivf
.jar application/java-archive
.java application/octet-stream
.jck application/liquidmotion
.jcz application/liquidmotion
.jfif image/pjpeg
.jpb application/octet-stream
.jpe image/jpeg
.jpeg image/jpeg
.jpg image/jpeg
.js application/x-javascript
.latex application/x-latex
.lit application/x-ms-reader
.lpk application/octet-stream
.lsf video/x-la-asf
.lsx video/x-la-asf
.lzh application/octet-stream
.m13 application/x-msmediaview
.m14 application/x-msmediaview
.m1v video/mpeg
.m3u audio/x-mpegurl
.man application/x-troff-man
.manifest application/x-ms-manifest
.map text/plain
.mdb application/x-msaccess
.mdp application/octet-stream
.me application/x-troff-me
.mht message/rfc822
.mhtml message/rfc822
.mid audio/mid
.midi audio/mid
.mix application/octet-stream
.mmf application/x-smaf
.mno text/xml
.mny application/x-msmoney
.mov video/quicktime
.movie video/x-sgi-movie
.mp2 video/mpeg
.mp3 audio/mpeg
.mp4 audio/mpeg
.mpa video/mpeg
.mpe video/mpeg
.mpeg video/mpeg
.mpg video/mpeg
.mpp application/vnd.ms-project
.mpv2 video/mpeg
.ms application/x-troff-ms
.msi application/octet-stream
.mvb application/x-msmediaview
.nc application/x-netcdf
.nsc video/x-ms-asf
.nws message/rfc822
.ocx application/octet-stream
.oda application/oda
.ods application/oleobject
.p10 application/pkcs10
.p12 application/x-pkcs12
.p7b application/x-pkcs7-certificates
.p7c application/pkcs7-mime
.p7m application/pkcs7-mime
.p7r application/x-pkcs7-certreqresp
.p7s application/pkcs7-signature
.pbm image/x-portable-bitmap
.pcx application/octet-stream
.pcz application/octet-stream
.pdf application/pdf
.pfb application/octet-stream
.pfm application/octet-stream
.pfx application/x-pkcs12
.pgm image/x-portable-graymap
.pko application/vnd.ms-pki.pko
.pma application/x-perfmon
.pmc application/x-perfmon
.pml application/x-perfmon
.pmr application/x-perfmon
.pmw application/x-perfmon
.png image/png
.pnm image/x-portable-anymap
.pnz image/png
.pot application/vnd.ms-powerpoint
.ppm image/x-portable-pixmap
.pps application/vnd.ms-powerpoint
.ppt application/vnd.ms-powerpoint
.prf application/pics-rules
.prm application/octet-stream
.prx application/octet-stream
.ps application/postscript
.psd application/octet-stream
.psm application/octet-stream
.psp application/octet-stream
.pub application/x-mspublisher
.qt video/quicktime
.qtl application/x-quicktimeplayer
.qxd application/octet-stream
.ra audio/x-pn-realaudio
.ram audio/x-pn-realaudio
.rar application/octet-stream
.ras image/x-cmu-raster
.rdf application/rdf+xml
.rf image/vnd.rn-realflash
.rgb image/x-rgb
.rm application/vnd.rn-realmedia
.rmi audio/mid
.roff application/x-troff
.rpm audio/x-pn-realaudio-plugin
.rtf application/rtf
.rtx text/richtext
.scd application/x-msschedule
.sct text/scriptlet
.sea application/octet-stream
.setpay application/set-payment-initiation
.setreg application/set-registration-initiation
.sgml text/sgml
.sh application/x-sh
.shar application/x-shar
.sit application/x-stuffit
.sldasm application/octet-stream
.sldprt application/octet-stream
.smd audio/x-smd
.smi application/octet-stream
.smx audio/x-smd
.smz audio/x-smd
.snd audio/basic
.snp application/octet-stream
.spc application/x-pkcs7-certificates
.spl application/futuresplash
.src application/x-wais-source
.ssm application/streamingmedia
.sst application/vnd.ms-pki.certstore
.stl application/vnd.ms-pki.stl
.sv4cpio application/x-sv4cpio
.sv4crc application/x-sv4crc
.svg application/octet-stream
.swf application/x-shockwave-flash
.t application/x-troff
.tar application/x-tar
.tcl application/x-tcl
.tex application/x-tex
.texi application/x-texinfo
.texinfo application/x-texinfo
.tgz application/x-compressed
.thn application/octet-stream
.tif image/tiff
.tiff image/tiff
.toc application/octet-stream
.tr application/x-troff
.trm application/x-msterminal
.tsv text/tab-separated-values
.ttf application/octet-stream
.txt text/plain
.u32 application/octet-stream
.uls text/iuls
.ustar application/x-ustar
.vbs text/vbscript
.vcf text/x-vcard
.vcs text/plain
.vdx application/vnd.visio
.vml text/xml
.vsd application/vnd.visio
.vss application/vnd.visio
.vst application/vnd.visio
.vsw application/vnd.visio
.vsx application/vnd.visio
.vtx application/vnd.visio
.wav audio/wav
.wax audio/x-ms-wax
.wbmp image/vnd.wap.wbmp
.wcm application/vnd.ms-works
.wdb application/vnd.ms-works
.wks application/vnd.ms-works
.wm video/x-ms-wm
.wma audio/x-ms-wma
.wmd application/x-ms-wmd
.wmf application/x-msmetafile
.wml text/vnd.wap.wml
.wmlc application/vnd.wap.wmlc
.wmls text/vnd.wap.wmlscript
.wmlsc application/vnd.wap.wmlscriptc
.wmp video/x-ms-wmp
.wmv video/x-ms-wmv
.wmx video/x-ms-wmx
.wmz application/x-ms-wmz
.world application/octet-stream
.wps application/vnd.ms-works
.wri application/x-mswrite
.wrl x-world/x-vrml
.wrz x-world/x-vrml
.wsdl text/xml
.wvx video/x-ms-wvx
.x application/directx
.xaf x-world/x-vrml
.xbm image/x-xbitmap
.xdr text/plain
.xla application/vnd.ms-excel
.xlc application/vnd.ms-excel
.xlm application/vnd.ms-excel
.xls application/vnd.ms-excel
.xlt application/vnd.ms-excel
.xlw application/vnd.ms-excel
.xml text/xml
.xof x-world/x-vrml
.xpm image/x-xpixmap
.xsd text/xml
.xsf text/xml
.xsl text/xml
.xslt text/xml
.xsn application/octet-stream
.xwd image/x-xwindowdump
.z application/x-compress
.zip application/x-zip-compressed