[FFmpeg-devel] [PATCH v2 6/7] avformat/mxfenc: allow all frame rates if -strict mode is set to unofficial or lower

[Tomas Härdin]

tor 2020-03-05 klockan 22:56 +0100 skrev Marton Balint:
> There was no consensus wheter or not to allow unofficial frame rates due to
> possible interoperability issues, a compromise is to only allow it if -strict
> mode is set to unofficial.
> 
> Signed-off-by: Marton Balint <cus at passwd.hu>
> ---
>  libavformat/mxfenc.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
> index 51e2dc5f31..6279ba9d6d 100644
> --- a/libavformat/mxfenc.c
> +++ b/libavformat/mxfenc.c
> @@ -2413,8 +2413,12 @@ static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational tbc)
>      AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
>  
>      if (!ff_mxf_get_content_package_rate(tbc)) {
> -        av_log(s, AV_LOG_ERROR, "Unsupported frame rate %d/%d\n", tbc.den, tbc.num);
> -        return AVERROR(EINVAL);
> +        if (s->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL) {
> +            av_log(s, AV_LOG_ERROR, "Unsupported frame rate %d/%d. Set -strict option to 'unofficial' or lower in order to allow it!\n", tbc.den, tbc.num);
> +            return AVERROR(EINVAL);
> +        } else {
> +            av_log(s, AV_LOG_WARNING, "Unofficial frame rate %d/%d.\n", tbc.den, tbc.num);
> +        }

This can work. That way we make it clear to users that here be dragons

/Tomas