The code of libopus is from FFmpeg.
The version is
commit 945b2dcc631a891fcc8c911891fd6730a40b8248 (HEAD -> master, origin/master, origin/HEAD)
Author: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Date:   Sun Nov 7 08:35:08 2021 +0100

    avformat/hls_sample_encryption: Fix precedence

    Fixes Coverity ticket #1492869.

    Reviewed-by: Steven Liu <lingjiujianke@gmail.com>
    Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>


2025.06, update codes:
The version is : FFmpeg 7.1.1 "Péter" from official web: https://ffmpeg.org/download.html#releases
7.1.1 was released on 2025-03-03.
It is the latest stable FFmpeg release from the 7.1 release branch, which was cut from master on 2024-09-24.