通过 Twilio MMS 发送音频/wav 文件

Question

I have a special case situation, where I'm trying to forward voicemail files that come encoded from a system as type "audio/wav" as an MMS to a phone number using the Twilio SMS/MMS API. I am using PHP 8.0 to try to accomplish this.

I did see that "audio/wav" is not a supported file type, and I confirmed this when trying to send the MMS using the API and the message failed due to the unsupported file type.

Msg "Attempt to retrieve MediaUrl returned an unsupported Content-Type."
EmailNotification   "false"
contentType "audio/wav"
url "https://URL/test.wav"
LogLevel    "ERROR"

1. I'm wondering if anyone has come up with a workaround for this issue, or knows of possible solutions.

2. Are audio/wav not supported, because carriers don't support this format as mms?

Answer 1

As per the docs WAV is supported

Twilio docs

audio/vnd.wave is a wave media type

Wiki source

In the MMS docs page

If the content-type header of your MediaUrl does not match the media at that URL, Twilio will reject the request.

Make sure you have set the correct content type.

Source