[FFmpeg-devel] [PATCH] avformat/wavdec: increase requested probe score for codec probe

[Michael Niedermayer]

On Fri, May 09, 2025 at 01:54:22PM +0200, Marton Balint wrote:
> 
> 
> On Fri, 9 May 2025, Michael Niedermayer wrote:
> 
> > On Fri, May 09, 2025 at 12:28:00AM +0200, Marton Balint wrote:
> > > Codec probing was primarily added to the wav demuxer to support DTS-in-wav
> > > files, but DTS probing functions return AVPROBE_SCORE_EXTENSION+1, so we can be
> > > a bit more strict with the required score.
> > > 
> > > This fixes MP3 misdetections for some wav files.
> > > 
> > > Fixes ticket #11581.
> > > 
> > > Signed-off-by: Marton Balint <cus at passwd.hu>
> > > ---
> > >  libavformat/wavdec.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c
> > > index dc7e49abc4..c65e0a2723 100644
> > > --- a/libavformat/wavdec.c
> > > +++ b/libavformat/wavdec.c
> > > @@ -178,7 +178,7 @@ static void handle_stream_probing(AVStream *st)
> > >  {
> > >      if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) {
> > >          FFStream *const sti = ffstream(st);
> > > -        sti->request_probe = AVPROBE_SCORE_EXTENSION;
> > > +        sti->request_probe = AVPROBE_SCORE_EXTENSION + 1;
> > >          sti->probe_packets = FFMIN(sti->probe_packets, 32);
> > >      }
> > >  }
> > 
> > please add a testcase to fate, if possible. Such corner cases
> > are important to be in fate
> 
> Sample is in the ticket, so it should be pretty trivial to do so. Can't we

> fund someone to do this and the other fixed trac tickets without fate tests?

Iam in favor of funding that

see https://trac.ffmpeg.org/wiki/SponsoringPrograms/STF/2025

thx

[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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