On Tue, May 06, 2025 at 09:19:31AM -0500, Romain Beauxis wrote:
> ---
>  libavformat/oggparsevorbis.c               | 11 +++++++++--
>  tests/ref/fate/ogg-vorbis-chained-meta.txt |  3 ---
>  2 files changed, 9 insertions(+), 5 deletions(-)
> 
> diff --git a/libavformat/oggparsevorbis.c b/libavformat/oggparsevorbis.c
> index 9f50ab9ffc..8b4ae872d2 100644
> --- a/libavformat/oggparsevorbis.c
> +++ b/libavformat/oggparsevorbis.c
> @@ -418,6 +418,7 @@ static int vorbis_packet(AVFormatContext *s, int idx)
>      struct ogg_stream *os = ogg->streams + idx;
>      struct oggvorbis_private *priv = os->private;
>      int duration, flags = 0;
> +    int skip_packet = 0;
>  
>      if (!priv->vp)
>          return AVERROR_INVALIDDATA;
> @@ -480,7 +481,13 @@ static int vorbis_packet(AVFormatContext *s, int idx)
>          if (duration < 0) {
>              os->pflags |= AV_PKT_FLAG_CORRUPT;
>              return 0;
> -        } else if (flags & VORBIS_FLAG_COMMENT) {
> +        }
> +
> +        if (flags &
> +            (VORBIS_FLAG_HEADER | VORBIS_FLAG_COMMENT | VORBIS_FLAG_SETUP))
> +            skip_packet = 1;

can the content of the header containing "global" tables for vorbis change?
if so what does this patch do to such a stream ?

(I mean is this breaking such streams? or do they not exist or did that never 
work?)

thx

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