A new codec doesn't obsolete old devices. At least, not right away. Studios still release new dvds with mpeg2 video. Online videos tend to be available in many

A new codec doesn't obsolete old devices. At least, not right away. Studios still release new dvds with mpeg2 video. Online videos tend to be available in many codecs. Video conferencing tends to negotiate to best available or has settled on ancient codecs and won't change quickly.