[FFmpeg-devel] [PATCH 2/2] lavf/mov: document the dvh1 codec switch based on hvcC availability

Paul B Mahol onemda at gmail.com
Mon Dec 17 23:25:00 EET 2018


On 12/3/18, Jan Ekström <jeebjp at gmail.com> wrote:
> ---
>  libavformat/mov.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/libavformat/mov.c b/libavformat/mov.c
> index ec57a05803..497790522f 100644
> --- a/libavformat/mov.c
> +++ b/libavformat/mov.c
> @@ -1903,6 +1903,11 @@ static int mov_read_glbl(MOVContext *c, AVIOContext
> *pb, MOVAtom atom)
>      if (ret < 0)
>          return ret;
>      if (atom.type == MKTAG('h','v','c','C') && st->codecpar->codec_tag ==
> MKTAG('d','v','h','1'))
> +        /* HEVC-based Dolby Vision derived from hvc1.
> +           Happens to match with an identifier
> +           previously utilized for DV. Thus, if we have
> +           the hvcC extradata box available as specified,
> +           set codec to HEVC */
>          st->codecpar->codec_id = AV_CODEC_ID_HEVC;
>
>      return 0;
> --
> 2.19.2

OK


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