tree fc1c900e2db4befa005347789872fa9a74b93c6b
parent e2d16488388d2735c55e680e7fe5eb995f422d99
author Jingning Han <jingning@google.com> 1624039283 -0700
committer Jingning Han <jingning@google.com> 1624047199 -0700

Write sequence header at the first key frame

BUG=aomedia:3079

Change-Id: I6a8c29836747c1343c2f0f9cf4cfba4ca0ba3a1b