4412198c05
Follow-up on 97d83056b315c56834eaa6776ae4c6a0848b5ef9, only check for intersection with the current srccaps when checking if a sinkpad can accept caps. I must have been lucky in my firefox testing then, and always entered the code path with audio getting negotiated first, thus not failing the is_subset check when srccaps had been negotiated as application/x-rtp, and an accept-caps query was made for the video caps with a defined extmap. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1384>