transcoding: Set codec default complexity to be 1. am: 326fd062d0 am: d4a320bee4 am: e141d72b9a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/15403973

Change-Id: I514261ad840a2dace84db0c603bf107e2e8b5f5c