The COS platform supports the following file types for MMS
Fully Optimized MIME Types:
- image/jpeg
- image/gif
- image/png
Additionally Supported MIME Types (Not Optimized for Delivery):
Audio: audio/basic, audio/L24, audio/mp4, audio/mpeg, audio/ogg, audio/vorbis, audio/vnd.rn-realaudio, audio/vnd.wave, audio/3gpp, audio/3gpp2, audio/ac3, audio/amr-nb, audio/amr, audio/webm
Video: video/mpeg, video/mp4, video/quicktime, video/webm, video/3gpp, video/3gpp2, video/3gpp-tt, video/H261, video/H263, video/H263-1998, video/H263-2000, video/H264
Image: image/bmp
Other: text/vcard, text/csv, text/rtf, text/richtext, text/calendar, application/pdf
Implementation Instructions:
To transmit multimedia content, please provide a compatible Media URL in the form of a public HTTP link to your image, video, or audio file. You may also utilize your own direct HTTP link to the media file.
During system configuration, input the Media File URL in the designated SMS/MMS Edit section. Please note that HTTPS links are currently not supported.
When transmitting messages containing Media URLs, our system will verify the content type through the URL's content-type header. If the specified type does not correspond with the actual media format, the request will be rejected with a TF (Text Fail) status.
Please ensure that the total message size, including all media components, remains under 500KB. Messages exceeding this limit will not be processed successfully.