[FFmpeg-trac] #11581(avformat:new): WAV demuxer codec probe misdetects PCM data as MP3

[FFmpeg]

#11581: WAV demuxer codec probe misdetects PCM data as MP3
-------------------------------------+-------------------------------------
             Reporter:  Marton       |                     Type:  defect
  Balint                             |
               Status:  new          |                 Priority:  normal
            Component:  avformat     |                  Version:  git-
             Keywords:  wav          |  master
  pcm_s16le mp1 mp3                  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 {{{
 ffprobe wav-pcm-misdetected-as-mp3.wav
 }}}

 {{{
 ffprobe version N-119447-g62f9d45284 Copyright (c) 2007-2025 the FFmpeg
 developers
   built with gcc 7 (SUSE Linux)
   configuration: --enable-vdpau --enable-gpl --enable-libfreetype
 --enable-libzvbi --enable-libass --enable-frei0r --enable-openssl
 --enable-nonfree --enable-libx264 --enable-libx265 --enable-libsrt
 --enable-libfdk-aac --enable-nonfree --enable-libvorbis --enable-decklink
 --enable-libmp3lame --enable-libvpx --enable-librsvg --enable-libdrm
 --enable-indev=kmsgrab --assert-level=2 --enable-libzimg --enable-opengl
 --enable-libpulse --enable-libxml2 --enable-libsnappy --enable-encoder=hap
 --enable-libwebp --enable-libopenh264 --enable-libfontconfig --enable-
 libklvanc --enable-libzmq --enable-libfreetype --enable-filter=drawtext
 --enable-libxvid
   libavutil      60.  2.100 / 60.  2.100
   libavcodec     62.  3.101 / 62.  3.101
   libavformat    62.  0.102 / 62.  0.102
   libavdevice    62.  0.100 / 62.  0.100
   libavfilter    11.  0.100 / 11.  0.100
   libswscale      9.  0.100 /  9.  0.100
   libswresample   6.  0.100 /  6.  0.100
   libpostproc    59.  1.100 / 59.  1.100
 [mp1 @ 0x2c3401c0] Header missing
 Input #0, wav, from 'wav-pcm-misdetected-as-mp3.wav':
   Metadata:
     encoder         : Lavf62.0.102
     timecode        : 00:00:00:00
   Duration: 00:00:00.51, bitrate: 1537 kb/s
   Stream #0:0: Audio: mp1 ([1][0][0][0] / 0x0001), 22050 Hz, mono, s16p,
 1536 kb/s

 }}}

 Expected result would be:
 {{{
 Input #0, wav, from 'wav-pcm-misdetected-as-mp3.wav':
   Metadata:
     encoder         : Lavf62.0.102
     timecode        : 00:00:00:00
   Duration: 00:00:00.51, bitrate: 1537 kb/s
   Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2
 channels, s16, 1536 kb/s
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11581>
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