VP9 encoder wrapper duplicated p_diff values in VP9 RTP payload descriptor for some frames. This confused ref frame finder which invalidated such frames on receiver. Bug: webrtc:9657 Change-Id: I5ddfed30d2908c5fbb8bce9d3dac0a519830e978 Reviewed-on: https://webrtc-review.googlesource.com/95701 Commit-Queue: Sergey Silkin <ssilkin@webrtc.org> Reviewed-by: Rasmus Brandt <brandtr@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24456}