FFmpeg has removed this field and usage of it in chromium must be removed before the ffmpeg dependency is updated. The chromium media change can be found here: https://chromium-review.googlesource.com/c/chromium/src/+/5384308 The usage of the field in webrtc seems only to be for sanity checking, so it should be just safe to remove entirely, since webrtc does not expect re-ordering at all. Bug: chromium:330573128 Change-Id: I9c5854ec82c3ad2d55374ea4eaa0c571437f8267 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/343840 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Ted (Chromium) Meyer <tmathmeyer@chromium.org> Cr-Commit-Position: refs/heads/main@{#41935}