gstrtp.rtpheader_extension.RTPHeaderExtension.setId must have been called with a valid extension id that is contained in these caps.
The only current known caps format is based on the SDP standard as produced by gstsdp.sdpmedia.SDPMedia.attributesToCaps.
the #GstCaps to configure this extension with
whether the caps could be successfully set on ext.
gstrtp.rtpheader_extension.RTPHeaderExtension.setId must have been called with a valid extension id that is contained in these caps.
The only current known caps format is based on the SDP standard as produced by gstsdp.sdpmedia.SDPMedia.attributesToCaps.