[FFmpeg-trac] #3550(avformat:new): [wavdec]DTS in wave can not be recognized

[FFmpeg]

#3550: [wavdec]DTS in wave can not be recognized
-------------------------------------+-------------------------------------
             Reporter:  adam_csheng  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  avformat     |                  Version:  git-
             Keywords:               |  master
             Blocking:               |               Blocked By:
Analyzed by developer:  1            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:
 {{{
 % ffprobe $ISSUE_FILE
 Issue output:
 "
 csheng at BG2BLT05:~/ffmpeg/ffmpeg$ ./ffprobe ../WorstCase.wav
 ffprobe version N-62341-gd9fef74 Copyright (c) 2007-2014 the FFmpeg
 developers
   built on Apr 11 2014 03:00:27 with gcc 4.6 (Ubuntu/Linaro
 4.6.3-1ubuntu5)
   configuration:
   libavutil      52. 75.100 / 52. 75.100
   libavcodec     55. 58.103 / 55. 58.103
   libavformat    55. 36.103 / 55. 36.103
   libavdevice    55. 11.100 / 55. 11.100
   libavfilter     4.  4.100 /  4.  4.100
   libswscale      2.  6.100 /  2.  6.100
   libswresample   0. 18.100 /  0. 18.100
 Input #0, wav, from '../WorstCase.wav':
   Duration: 00:00:41.89, bitrate: 1536 kb/s
     Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2
 channels, s16, 1536 kb/s
 "
 ffmpeg version: N-62341-gd9fef74 (master)
 }}}

 But it should be dts.
 After modify as below:
 {{{
 diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c
 index daea64e..a865b76 100644
 --- a/libavformat/wavdec.c
 +++ b/libavformat/wavdec.c
 @@ -114,7 +114,7 @@ static void handle_stream_probing(AVStream *st)
  {
      if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) {
          st->request_probe = AVPROBE_SCORE_EXTENSION;
 -        st->probe_packets = FFMIN(st->probe_packets, 4);
 +        st->probe_packets = FFMIN(st->probe_packets, 14);
      }
  }
 }}}
 It should be correct:
 {{{
 csheng at BG2BLT05:~/ffmpeg/ffmpeg$ ./ffprobe ../WorstCase.wav
 ffprobe version N-62341-gd9fef74 Copyright (c) 2007-2014 the FFmpeg
 developers
   built on Apr 11 2014 03:00:27 with gcc 4.6 (Ubuntu/Linaro
 4.6.3-1ubuntu5)
   configuration:
   libavutil      52. 75.100 / 52. 75.100
   libavcodec     55. 58.103 / 55. 58.103
   libavformat    55. 36.103 / 55. 36.103
   libavdevice    55. 11.100 / 55. 11.100
   libavfilter     4.  4.100 /  4.  4.100
   libswscale      2.  6.100 /  2.  6.100
   libswresample   0. 18.100 /  0. 18.100
 [dca @ 0x2c36e80] Not a valid DCA frame
 [dca @ 0x2c36e80] Number of channels changed in DCA decoder (2 -> 6)
 Input #0, wav, from '../WorstCase.wav':
   Duration: 00:00:41.89, bitrate: 1536 kb/s
     Stream #0:0: Audio: dts (DTS) ([1][0][0][0] / 0x0001), 48000 Hz,
 5.1(side), fltp, 384 kb/s

 }}}

 If you need issue file, please contact me.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3550>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker