The GStreamer package needs to be updated to support WebM.
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release. Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release. This request is not yet committed for
FF (firefox-3.6.4-4.el6) cant handle webm files, webm demo here
But I can play single webm file (see https://bugzilla.redhat.com/attachment.cgi?id=426539) in totem with:
We can move to verified.
Red Hat Enterprise Linux 6.0 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.