Dav1d expects Dav1dSettings::n_threads to be in range [0,256]. http://google3/third_party/dav1d/src/lib.c;l=130;rcl=674317898 Bug: none Change-Id: I4a7dfd15be733b84809aa1fc496b261d097ca5e7 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/370800 Reviewed-by: Åsa Persson <asapersson@webrtc.org> Commit-Queue: Sergey Silkin <ssilkin@webrtc.org> Cr-Commit-Position: refs/heads/main@{#43516}