delta_q is encoded as signed integer (s(4)) that uses extra bit for the sign. See VP9 Bitstream Specification section 6.2.10 Delta quantizer syntax Bug: None Change-Id: Ib458c2a2ded3c4d6c153b6bedd29c48ef12cc538 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/231125 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Cr-Commit-Position: refs/heads/main@{#34908}