Andreas Rheinhardt:
> AVCodec is only ever used as an incomplete type (i.e. via a pointer
> to an AVCodec) in avformat.h and it is not really part of the core
> of avformat.h or libavformat; almost none of our internal users
> make use of it (and none make use of hwcontext.h, which is implicitly
>
AVCodec is only ever used as an incomplete type (i.e. via a pointer
to an AVCodec) in avformat.h and it is not really part of the core
of avformat.h or libavformat; almost none of our internal users
make use of it (and none make use of hwcontext.h, which is implicitly
included). So switch to use st