Backport of "matroska-mux: Handle multiview-mode/flags/pixel-aspect-ratio caps fields correctly when checking caps equality" into 1.20
requested to merge tpm/gstreamer:backport-mr-1826-into-1.20-matroskamux-non-existing-video-fields-caps-change into 1.20
Backport of !1826 (merged) "matroska-mux: Handle multiview-mode/flags/pixel-aspect-ratio caps fields correctly when checking caps equality".
Commits: