How to Send OPUS Pre-Encoded data using WebRtc?

[Muhammad Zaid Ali]

I have an opus encoded audio file (Ogg file) and want to send it via webRTC. and don't want webRTC to encode it again just send it to another peer.

I have worked on sending pre-encoded video (h264) through a video channel and got a hurdle in the video encoder factory so, I managed to build a custom encoder factory using an open H264 encoder. For reference, I used an unreal engine (opensource) project to build this custom factory.

Now, I am planning to send pre-encoded audio (opus) through WebRTC audio channel but there seems to be no relevant posts/blogs or research available online to assist in building a custom audio encoder factory. Not even an unreal engine supports documenting anything related to this matter.

has anyone done this before or knows how to do it?

[Karllen Zheng]

You can use an insertable interface and modify the encoder audio data by WebRTC with your encoded opus data.

I think it is an easy way, you only need to change the encoder data when WebRTC sends RTP data. You needn't modify native WebRTC code.