[FFmpeg-trac] #3784(avformat:new): ffprobe of plain WAV file fails with "Not a valid DCA frame"

FFmpeg trac at avcodec.org
Fri Jul 18 22:48:12 CEST 2014


#3784: ffprobe of plain WAV file fails with "Not a valid DCA frame"
----------------------------------+---------------------------------------
             Reporter:  pneuman   |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  avformat  |                  Version:  unspecified
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
----------------------------------+---------------------------------------
 I have what should be a fairly plain WAV file -- it's 44.1khz, 16-bit,
 produced by the "flac" command-line tool, but when I run ffprobe on it, it
 fails:

 {{{
 leigh at petunia03:~$ /opt/bandcamp/bin/ffprobe -show_streams -show_format
 testwav1-chopped.wav
 ffprobe version 2.2.4 Copyright (c) 2007-2014 the FFmpeg developers
   built on Jul 16 2014 01:05:58 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
   configuration: --prefix=/opt/bandcamp --disable-ffplay --disable-
 ffserver --enable-memalign-hack --disable-bsfs --disable-protocols
 --disable-indevs --disable-outdevs --disable-devices --enable-
 protocol=file
   libavutil      52. 66.100 / 52. 66.100
   libavcodec     55. 52.102 / 55. 52.102
   libavformat    55. 33.100 / 55. 33.100
   libavdevice    55. 10.100 / 55. 10.100
   libavfilter     4.  2.100 /  4.  2.100
   libswscale      2.  5.102 /  2.  5.102
   libswresample   0. 18.100 /  0. 18.100
 [dca @ 0x1b94cc0] Not a valid DCA frame
 [dca @ 0x1b94cc0] Invalid LFE value: 0
     Last message repeated 1 times
 [dca @ 0x1b94cc0] error decoding block
 [dca @ 0x1b94cc0] Invalid LFE value: 0
 [wav @ 0x1b941c0] decoding for stream 0 failed
 [wav @ 0x1b941c0] Could not find codec parameters for stream 0 (Audio: dts
 ([1][0][0][0] / 0x0001), 192000 Hz, 2 channels, fltp, 0 kb/s): no
 decodable DTS frames
 Consider increasing the value for the 'analyzeduration' and 'probesize'
 options
 testwav1-chopped.wav: End of file
 }}}

 This seems very similar to ticket #2810 but I assume that a release as
 recent as 2.2.4 would include that fix. Could it be a regression?

 I can't upload the full affected WAV, but I'll upload a 10 second snippet
 from the start that produces the same error.

 Thanks
 Leigh

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3784>
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