The documentation of avcodec_close() says:
> Do not use this function. Use avcodec_free_context() to destroy a
> codec context (either open or closed).
It was deprecated in FFmpeg 7 by commit
1cc24d749569a42510399a29b034f7a77bdec34e:
<1cc24d7495>
> Its use has been discouraged since 2016, but now is no longer used in
> avformat, so there is no reason to keep it public.
1e3deabd6c