tree fe7eb23f1fc94f3bf5de17d7d953951db2130f02
parent 13b46bd3bd709a4fdfdf74bf76a3fd60855cc367
author Wan-Teh Chang <wtc@google.com> 1613500256 -0800
committer Wan-Teh Chang <wtc@google.com> 1613520602 +0000

Document valid values for aomenc 'usage' option

BUG=aomedia:2959

Change-Id: I19afb22ddda187e432a36094b0548a07f1185f0d