[FFmpeg-trac] #7370(undetermined:new): Encoding and subsequent decoding with AptX (or AptX HD) results in incorrect sample rate of output file

FFmpeg trac at avcodec.org
Mon Aug 20 21:31:50 EEST 2018


#7370: Encoding and subsequent decoding with AptX (or AptX HD) results in
incorrect sample rate of output file
-------------------------------------+-------------------------------------
             Reporter:  SergeFF      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  aptx         |               Blocked By:
  aptx_hd                            |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Encoding and subsequent decoding with AptX (or AptX HD) results in
 incorrect sample rate of output file.

 '''Input file''': sine1k.wav - 44100 Hz (16 bit), sinusoidal signal 1000
 Hz
 '''Decoded file''': sine1k-aptx.wav is labeled as 48000 Hz (16 bit) but in
 fact it is 44100 Hz (16 bit) which can be verified by spectral analysis,
 it shows 1088 Hz signal instead of 1000 Hz.

 How to reproduce:
 {{{
 ffmpeg -loglevel verbose -i sine1k.wav -acodec aptx sine1k.aptx
 ffmpeg -loglevel verbose -i sine1k.aptx sine1k-aptx.wav

 ffmpeg version 4.0.2
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7370>
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