[FFmpeg-trac] #5054(undetermined:new): TrueHD Decoder not lossless

FFmpeg trac at avcodec.org
Wed Dec 2 07:17:35 CET 2015


#5054: TrueHD Decoder not lossless
-------------------------------------+-------------------------------------
             Reporter:  marcusj0015  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:  TrueHD,      |               Blocked By:
  lossless, audio, decoder           |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 The sample is exactly 1 minute long, 48000hz sample rate, 24 bits per
 sample, 8 channels. and all samples are set to 0xFFFFFF

 here's the thd sample, and here's one of the 8 mono wavs (they're all
 literally the same, I manually created the file in a hex editor and copied
 it for all the others.)

 the thd was created with Dolby Media Encoder Standalone Edition.

 Input.mlp is what ffmpeg decodes, to Output.wav.

 Original.wav is the file fed into Dolby Media Encode Standalone Edition

 Here are the files:

 Input.mlp: https://www.dropbox.com/s/fvh9lie1ofryws0/Input.mlp


 Output.wav: https://www.dropbox.com/s/vjfjgv1vu11uci4/Output.wav


 Original.wav: https://www.dropbox.com/s/8s5n5lv4qtvzysw/Original.wav

 The command line output is attached.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5054>
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