The newer format is byte aligned and thus faster to write and parse It also more compact for the common target bitrate cases. Bug: webrtc:12000 Change-Id: Id040ecb9e7d85799134a6e52f5d6d280b5161262 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/193860 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Per Kjellander <perkj@webrtc.org> Cr-Commit-Position: refs/heads/master@{#32669}