Real-time metadata transfer synchronized with video frames using webrtc and text tracks

I use WebRTC (win C ++ native client) to broadcast live video to peers (hosted in Chrome).
Purpose: send metadata for each video frame (metadata changes at the frame level).

  • Is it possible to send metadata to a text track that javascript will use on the expert side?
  • If not, is there an alternative way to synchronize real-time WebRTC video with metadata? For example, using WebRTC DataChannel / WebSockets?
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