Adding External Video Stream to SIP Call between SIP Card and Web Client

Hello,

Currently, I am making calls between a SIP card and a web client using JSSIP, passing through an Asterisk server. I would like to evolve the functionality by adding video to the call. The challenge I’m facing is that I need to retrieve the video stream from a camera that is not linked to the SIP card.

My goal is to include the video stream in the same call channel and send it over the RTP port corresponding to the m=video section in the SIP INVITE. However, despite configuring everything properly, I am unable to get the m=video trace to appear in the SIP call when it comes from the SIP card.

Could anyone suggest any methods to force the video port to open or any alternative approach to include an external video stream in the ongoing SIP call?

Thanks in advance for your help!