tree 1df572af5227d213d1b33133b93336e05c9ae5f3
parent 7b9ddd4bfd8257bbb31f1d38537c9b283e29c8dd
author Tom Finegan <tomfinegan@google.com> 1537392500 -0700
committer Tom Finegan <tomfinegan@google.com> 1537539090 +0000

Write AV1 CodecPrivate when outputting WebM.

Per https://github.com/Matroska-Org/matroska-specification/blob/master/codec/av1.md
the presence of the CodecPrivate is mandatory.

STATS_CHANGED:
This change slightly increases the size of all WebM output from aomenc
due to the addition of the CodecPrivate element that contains the AV1
configuration information.

BUG=aomedia:2027

Change-Id: I1e320c9ecfb5e2c8ddb4840deaab2bce16fcbe9a