Using ffmpeg from QtMultimedia to set RTP as container media format

raulgd

Hi,

I'm creating an application that requires RTP as media format container for streaming, but QMediaFormat doesn't have it as an option, although I know it's supported by the ffmpeg libraries as a media format.

How can I integrate that media format if my backend is ffmpeg, I wouldn't have to have to use ffmpeg besides QtMultimedia knowing it also uses it.

Cheers

SGaist

Hi,

Which version of Qt are you using ?

raulgd

@SGaist I have Qt commercial, version 6.5.2

SGaist

AFAIR, you can play RTP streams directly by using the URL of the source.

raulgd

@SGaist I need to produce them, not play them, that's why I want to encode through QMediaFormat.
I need to produce a video stream out of the desktop and another from the camera, and encode it in AVC with RTP as container for transmission.

SGaist

Sorry ! I misread your requirement. I currently don't think that it's possible through QtMultimedia. It might be a feature request to be made for the ffmpeg backend. AFAIK, the current list of supported format come from what is supported on each platform.

raulgd

@SGaist thanks for the reply... Although ffmpeg does support RTP, I Don't see if it's available on all supported platforms or only on some.

As an alternative, I found this library https://github.com/ultravideo/uvgRTP I'll see if I can make something of it and integrate it with QtMultimedia, apparently if I get a stream of H264 (AVC) or H265 it will wrap it into (S)RTP, although only works on Windows, Mac and Linux, it would be cool if I get it to work also on iOS and Android (the platforms covered by my Qt subscription).

Maybe I'll keep this open, if I manage to get it working it could help someone else.