常用MIME型別(Mp4的mime型別設定)
阿新 • • 發佈：2018-12-18
前兩天在遇到了一個h5寫的mp4視訊網頁在某些電腦中開啟後只下載而不播放的問題（大部分電腦都播放正確，而有些電腦在開啟網頁時就會變成迅雷下載，下載完成也不會播放）。
html如下：
- <video id="video" class="uk-cover-object uk-position-absolute uk-hidden-touch" width="640" height="360" muted loop autoplay src="~/video/first.mp4" poster="~/images/banner.jpg">
- 您的瀏覽器不支援當前的視訊格式！
- </video>
後來發現是伺服器MIME配置有問題， 原來伺服器配置的MIME type為：application/octet-stream。改為video/mp4之後就好了。
那麼，application/octet-stream和video/mp4有什麼區別呢？
1、先看一下mime type的定義，維基百科中的解釋很好，特此摘抄過來：
一個MIME型別包括一個型別（type），一個子型別（subtype）。此外可以加上一個或多個可選引數（optional parameter）。其格式為
型別名 / 子型別名 [ ; 可選引數 ]
目前已被註冊的型別名有application
audio、example、image、message、model、multipart、text，以及video。chemical是一個非官方的常用型別名。[1]此外，非標準的型別名一般會加上x-字首，但這種做法已經過時。[2]
子型別名通常是一個媒體形式被冠以的名稱，不過子型別名中也會有其它資訊，包括廠商資訊、產品資訊、分類資訊（子型別會被歸進一個樹狀的分類結構中）、字尾等等。樹結構分類資訊以被.相互連線的字串表示。每一個由.分隔開的部分又可以加上與其以-相連線的附加資訊。此外，子型別名中也會有放在最後，與前面的內容以+相連線的字尾。因此，一個媒體型別的格式可以被更加細地表示為：
型別名 / [ 樹結構分類資訊（中間可能有一個或多個“.”） ] 子型別名（中間可能有一個或多個“-”） [ + 字尾 ] [ ; 可選引數 ]
2、再看看這兩種的型別的用途：
application/octet-stream:任意的二進位制檔案（通常做為通知瀏覽器下載檔案）；
video/mp4：MP4
下面附上常見的mimetype配置列表
| Video Type | Extension | MIME Type |
| Flash | .flv | video/x-flv |
| MPEG-4 | .mp4 | video/mp4 |
| iPhone Index | .m3u8 | application/x-mpegURL |
| iPhone Segment | .ts | video/MP2T |
| 3GP Mobile | .3gp | video/3gpp |
| QuickTime | .mov | video/quicktime |
| A/V Interleave | .avi | video/x-msvideo |
| Windows Media | .wmv | video/x-ms-wmv |
最後，貼一個比較全的列表(轉自：http://www.freeformatter.com/mime-types-list.html)：
| Name | MIME Type / Internet Media Type | File Extension | More Details |
|---|---|---|---|
| CoolTalk | x-conference/x-cooltalk | .ice | |
| SGI Movie | video/x-sgi-movie | .movie | |
| Audio Video Interleave (AVI) | video/x-msvideo | .avi | |
| Microsoft Windows Media Audio/Video Playlist | video/x-ms-wmx | .wmx | |
| FLI/FLC Animation Format | video/x-fli | .fli | |
| Open Web Media Project - Video | video/webm | .webm | |
| Vivo | video/vnd.vivo | .viv | |
| DECE MP4 | video/vnd.uvvu.mp4 | .uvu | |
| Microsoft PlayReady Ecosystem Video | video/vnd.ms-playready.media.pyv | .pyv | |
| MPEG Url | video/vnd.mpegurl | .mxu | |
| FAST Search & Transfer ASA | video/vnd.fvt | .fvt | |
| DECE Video | video/vnd.dece.video | .uvv | |
| DECE SD Video | video/vnd.dece.sd | .uvs | |
| DECE PD Video | video/vnd.dece.pd | .uvp | |
| DECE Mobile Video | video/vnd.dece.mobile | .uvm | |
| DECE High Definition Video | video/vnd.dece.hd | .uvh | |
| Quicktime Video | video/quicktime | .qt | |
| Ogg Video | video/ogg | .ogv | |
| MPEG Video | video/mpeg | .mpeg | |
| MPEG-4 Video | video/mp4 | .mp4 | |
| Motion JPEG 2000 | video/mj2 | .mj2 | |
| JPEG 2000 Compound Image File Format | video/jpm | .jpm | |
| JPGVideo | video/jpeg | .jpgv | |
| YAML Ain't Markup Language / Yet Another Markup Language | text/yaml | .yaml | |
| vCalendar | text/x-vcalendar | .vcs | |
| Pascal Source File | text/x-pascal | .p | |
| Java Source File | text/x-java-source,java | .java | |
| Fortran Source File | text/x-fortran | .f | |
| Assembler Source File | text/x-asm | .s | |
| Wireless Markup Language Script (WMLScript) | text/vnd.wap.wmlscript | .wmls | |
| Wireless Markup Language (WML) | text/vnd.wap.wml | .wml | |
| J2ME App Descriptor | text/vnd.sun.j2me.app-descriptor | .jad | |
| In3D - 3DML | text/vnd.in3d.spot | .spot | |
| In3D - 3DML | text/vnd.in3d.3dml | .3dml | |
| Graphviz | text/vnd.graphviz | .gv | |
| FLEXSTOR | text/vnd.fmi.flexstor | .flx | |
| mod_fly / fly.cgi | text/vnd.fly | .fly | |
| Curl - Source Code | text/vnd.curl.scurl | .scurl | |
| Curl - Manifest File | text/vnd.curl.mcurl | .mcurl | |
| Curl - Detached Applet | text/vnd.curl.dcurl | .dcurl | |
| Curl - Applet | text/vnd.curl | .curl | |
| URI Resolution Services | text/uri-list | .uri | |
| Turtle (Terse RDF Triple Language) | text/turtle | .ttl | |
| Tab Seperated Values | text/tab-separated-values | .tsv | |
| Standard Generalized Markup Language (SGML) | text/sgml | .sgml | |
| Rich Text Format (RTF) | text/richtext | .rtx | |
| PRS Lines Tag | text/prs.lines.tag | .dsc | |
| BAS Partitur Format | text/plain-bas | .par | |
| HyperText Markup Language (HTML) | text/html | .html | |
| Comma-Seperated Values | text/csv | .csv | |
| Cascading Style Sheets (CSS) | text/css | .css | |
| Virtual Reality Modeling Language | model/vrml | .wrl | |
| Virtue VTU | model/vnd.vtu | .vtu | |
| Virtue MTS | model/vnd.mts | .mts | |
| Gen-Trix Studio | model/vnd.gtw | .gtw | |
| Geometric Description Language (GDL) | model/vnd.gdl | .gdl | |
| Autodesk Design Web Format (DWF) | model/vnd.dwf | .dwf | |
| COLLADA | model/vnd.collada+xml | .dae | |
| Mesh Data Type | model/mesh | .msh | |
| Initial Graphics Exchange Specification (IGES) | model/iges | .igs | |
| Email Message | message/rfc822 | .eml | |
| X Window Dump | image/x-xwindowdump | .xwd | |
| X PixMap | image/x-xpixmap | .xpm | |
| X BitMap | image/x-xbitmap | .xbm | |
| Silicon Graphics RGB Bitmap | image/x-rgb | .rgb | |
| Portable Pixmap Format | image/x-portable-pixmap | .ppm | |
| Portable Graymap Format | image/x-portable-graymap | .pgm | |
| Portable Bitmap Format | image/x-portable-bitmap | .pbm | |
| Portable Anymap Image | image/x-portable-anymap | .pnm | |
| Portable Network Graphics (PNG) (x-token) | image/x-png | .png | |
| PICT Image | image/x-pict | .pic | |
| PCX Image | image/x-pcx | .pcx | |
| Corel Metafile Exchange (CMX) | image/x-cmx | .cmx | |
| CMU Image | image/x-cmu-raster | .ras | |
| Portable Network Graphics (PNG) (Citrix client) | image/x-citrix-png | .png | |
| JPEG Image (Citrix client) | image/x-citrix-jpeg | .jpeg, .jpg | |
| WebP Image | image/webp | .webp | |
| eXtended Image File Format (XIFF) | image/vnd.xiff | .xif | |
| WAP Bitamp (WBMP) | image/vnd.wap.wbmp | .wbmp | |
| FlashPix | image/vnd.net-fpx | .npx | |
| EDMICS 2000 | image/vnd.fujixerox.edmics-rlc | .rlc | |
| EDMICS 2000 | image/vnd.fujixerox.edmics-mmr | .mmr | |
| FlashPix | image/vnd.fpx | .fpx | |
| FastBid Sheet | image/vnd.fastbidsheet | .fbs | |
| DWG Drawing | image/vnd.dwg | .dwg | |
| Close Captioning - Subtitle | image/vnd.dvb.subtitle | .sub | |
| DjVu | image/vnd.djvu | .djvu | |
| DECE Graphic | image/vnd.dece.graphic | .uvi | |
| Photoshop Document | image/vnd.adobe.photoshop | .psd | |
| Tagged Image File Format | image/tiff | .tiff | |
| Scalable Vector Graphics (SVG) | image/svg+xml | .svg | |
| BTIF | image/prs.btif | .btif | |
| Portable Network Graphics (PNG) | image/png | .png | |
| JPEG Image (Progressive) | image/pjpeg | .pjpeg | |
| OpenGL Textures (KTX) | image/ktx | .ktx |