Merge "c2 vp9, av1: Produce 8 bit output when color format isn't set" am: 621b2e0d am: 2e1bf258

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2110984



Change-Id: Ide8c2e680f4679f389f83f1d03daf7e9e9e32c14
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>