Assumption extra needed bytes for single packet needs is sum of extra bytes for first and last packet moved up to RTPSenderVideo from individual packetizers. There it can be fixed. Bug: webrtc:9868 Change-Id: I24c80ffa5c174afd3fe3e92fa86ef75560bb961e Reviewed-on: https://webrtc-review.googlesource.com/c/105662 Commit-Queue: Danil Chapovalov <danilchap@webrtc.org> Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org> Cr-Commit-Position: refs/heads/master@{#25160}