How to manage multimedia files in WeChat Enterprise Account Development

When using the interface, enterprises can obtain and call multimedia files and multimedia messages through media_id. Through this interface, enterprises can upload or download multimedia files.

Note that each multimedia file (media_id) will be automatically deleted 3 days after being uploaded to the WeChat server to save server resources.

1. Upload media files

Used to upload media resource files such as pictures, audio, video, and common files (such as doc, ppt). The interface returns the media resource ID: media_id. Please note that media_id is reusable, and the same media_id can be used to send messages multiple times .

• Request Instructions

Https request method: POST

https://qyapi.weixin.qq.com/cgi-bin/media/upload?access_token=ACCESS_TOKEN&type=TYPE

• Parameter Description

• Permissions

Completely public. All administrators can call it, and media_id can be shared.

• Return Description

 {
 "type" : "image" ,
 "media_id" : "0000001" ,
 "created_at" : "1380000000"  
 } 

• Uploaded media file limit

Image: 1MB, support JPG format

Voice: 2MB, playback length no more than 60s, supports AMR format

Video: 10MB, supports MP4 format

Normal file: 10MB

2. Get media files

Get pictures, audio, video and other files through media_id.

• Request Instructions

Https request method: GET

https://qyapi.weixin.qq.com/cgi-bin/media/get?access_token=ACCESS_TOKEN&media_id=MEDIA_ID

• Parameter Description

• Permissions

Completely public. All administrators can call it, and media_id can be shared.

• Return results

a) Return if correct:

 {
 HTTP/ 1.1   200 OK
 Connection: close
 Content-Type: image/jpeg
   Content-disposition: attachment; filename= "MEDIA_ID.jpg"  
 Date: Sun, 06 Jan 2013   10 : 20 : 18 GMT
   Cache-Control: no-cache, must-revalidate
 Content-Length: 339721   
    
 Xxxx
 }

b) Returned in case of error (HTTP header is omitted here):

 {
 "errcode" : "40004" ,
 "errmsg" : "invalid media_id"  
 }