[FFmpeg-trac] #9401(undetermined:new): Conversion from DSS fails with files created by Philips LFH devices

[FFmpeg]

#9401: Conversion from DSS fails with files created by Philips LFH devices
-------------------------------------+-------------------------------------
             Reporter:  Eddie Green  |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:

 Conversion from DSS fails with files created by Philips LFH devices

 How to reproduce:

 use the sample file 'PhilipsNotWorking.dss' supplied with the following
 command line:

 ffmpeg -v 9 -loglevel 99 -i "PhilipsNotWorking.DSS"
 "PhilipsNotWorking.wav" -y -report

 Output:

 {{{
 ffmpeg started on 2021-08-30 at 13:23:36
 Report written to "ffmpeg-20210830-132336.log"
 Log level: 99
 Command line:
 ffmpeg -v 9 -loglevel 99 -i
 "C:\\Data\\Desktop\\Audio\\PhilipsNotWorking.DSS"
 "C:\\Data\\Desktop\\Audio\\PhilipsNotWorking.wav" -y -report
 ffmpeg version 4.4-full_build-www.gyan.dev Copyright (c) 2000-2021 the
 FFmpeg developers
   built with gcc 10.2.0 (Rev6, Built by MSYS2 project)
   configuration: --enable-gpl --enable-version3 --enable-static --disable-
 w32threads --disable-autodetect --enable-fontconfig --enable-iconv
 --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-
 libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh
 --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca
 --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e
 --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265
 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx
 --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi
 --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf
 --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec
 --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-
 libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-
 libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb
 --enable-libmp3lame --enable-libshine --  libavutil      56. 70.100 / 56.
 70.100
   libavcodec     58.134.100 / 58.134.100
   libavformat    58. 76.100 / 58. 76.100
   libavdevice    58. 13.100 / 58. 13.100
   libavfilter     7.110.100 /  7.110.100
   libswscale      5.  9.100 /  5.  9.100
   libswresample   3.  9.100 /  3.  9.100
   libpostproc    55.  9.100 / 55.  9.100
 Splitting the commandline.
 Reading option '-v' ... matched as option 'v' (set logging level) with
 argument '9'.
 Reading option '-loglevel' ... matched as option 'loglevel' (set logging
 level) with argument '99'.
 Reading option '-i' ... matched as input url with argument
 'C:\Data\Desktop\Audio\PhilipsNotWorking.DSS'.
 Reading option 'C:\Data\Desktop\Audio\PhilipsNotWorking.wav' ... matched
 as output url.
 Reading option '-y' ... matched as option 'y' (overwrite output files)
 with argument '1'.
 Reading option '-report' ... matched as option 'report' (generate a
 report) with argument '1'.
 Finished splitting the commandline.
 Parsing a group of options: global .
 Applying option v (set logging level) with argument 9.
 Applying option loglevel (set logging level) with argument 99.
 Applying option y (overwrite output files) with argument 1.
 Applying option report (generate a report) with argument 1.
 Successfully parsed a group of options.
 Parsing a group of options: input url
 C:\Data\Desktop\Audio\PhilipsNotWorking.DSS.
 Successfully parsed a group of options.
 Opening an input file: C:\Data\Desktop\Audio\PhilipsNotWorking.DSS.
 [NULL @ 00000199bd0a0c40] Opening
 'C:\Data\Desktop\Audio\PhilipsNotWorking.DSS' for reading
 [file @ 00000199bd0a1b00] Setting default whitelist 'file,crypto,data'
 Probing dss score:100 size:2048
 [dss @ 00000199bd0a0c40] Format dss probed with size=2048 and score=100
 [dss @ 00000199bd0a0c40] Support for codec 4c in DSS is not implemented.
 Update your FFmpeg version to the newest one from Git. If the problem
 still occurs, it means that your file has a feature which has not been
 implemented.
 [dss @ 00000199bd0a0c40] If you want to help, upload a sample of this file
 to https://streams.videolan.org/upload/ and contact the ffmpeg-devel
 mailing list. (ffmpeg-devel at ffmpeg.org)
 [AVIOContext @ 00000199bd0a9dc0] Statistics: 18432 bytes read, 0 seeks
 C:\Data\Desktop\Audio\PhilipsNotWorking.DSS: Not yet implemented in
 FFmpeg, patches welcome

 }}}

 Recording Device: Philips LFH9600

 More information:

 Having previously successfully converted files from this device in the
 past, I received this error only with recent files. Investigating the
 differences between working and non-working files, I discovered that the
 device had reset its settings held in NVRAM and was tagging each file with
 a default set of proprietary information - Access Code, Company and Work
 Type.

 The location of these settings conflicts with DSS_HEAD_OFFSET_ACODEC in
 dss.c at 0x2a4 - in particular, the location where the 'Company' tag is
 written to.

 Comparing the hex for working and non-working files, this location is not
 used for the storage of codec information in files produced by this
 device.

 File attachments to send:

 PhilipsNotWorking.dss
 PhilipsWorking.dss
 Hex Editor view of working and non-working files.jpg
 ffmpeg-not-working.log
 ffmpeg-working.log
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9401>
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