[FFmpeg-devel] [PATCH 4/4] fftools/ffmpeg: drop an FF_API-guarded block

[James Almer]

On 1/26/2021 2:01 PM, Anton Khirnov wrote:
> These macros are private and should not be used by external callers.
> ---
>   fftools/ffmpeg_opt.c | 13 -------------
>   1 file changed, 13 deletions(-)
> 
> diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
> index bf2eb26246..472016b93c 100644
> --- a/fftools/ffmpeg_opt.c
> +++ b/fftools/ffmpeg_opt.c
> @@ -2423,19 +2423,6 @@ loop_end:
>           avio_closep(&pb);
>       }
>   
> -#if FF_API_LAVF_AVCTX
> -    for (i = nb_output_streams - oc->nb_streams; i < nb_output_streams; i++) { //for all streams of this output file
> -        AVDictionaryEntry *e;
> -        ost = output_streams[i];
> -
> -        if ((ost->stream_copy || ost->attachment_filename)
> -            && (e = av_dict_get(o->g->codec_opts, "flags", NULL, AV_DICT_IGNORE_SUFFIX))
> -            && (!e->key[5] || check_stream_specifier(oc, ost->st, e->key+6)))
> -            if (av_opt_set(ost->st->codec, "flags", e->value, 0) < 0)
> -                exit_program(1);
> -    }
> -#endif

I think this is here for the sake of a warning in libavformat/mux.c, 
where if you use -flags +bitexact but not -fflags +bitexact it would 
tell you to check that's what you intended to do.

If you remove this chunk, then might as well remove the warning in mux.c
It's also guarded by a FF_API_LAVF_AVCTX check for obvious reasons.

> -
>       if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
>           av_dump_format(oc, nb_output_files - 1, oc->url, 1);
>           av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", nb_output_files - 1);
>