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• Why does my video have an audio/mp4 mime type [duplicate]

  22 février 2018, par Tucker Peebles

  This question already has an answer here :

  • How do you safely identify whether an mp4 is an audio only or video file
    
    1 answer
    
  • Using ffprobe to check audio-only files
    
    3 answers
    

  I have a video file but it has a mime type of "audio/mp4". Why would that happen. The user who sent it to me said it came from a Flip video camera and was uploaded by usb to her computer.

  In my program, I’m checking for ’video/mp4’ mime type when I’m trying to determine if it’s a video, but I want to eventually support audio uploads too which would need to check ’audio/mp4’.

  Unfortunately, the video is a personal video of the user’s child so I don’t want to upload it here. Let me know if there is any information I can provide about the video that would help.

• GDPR : How to fill in the information asset register when using Matomo ?

  4 avril 2018, par InnoCraft

  Disclaimer : this blog post has been written by digital analysts, not lawyers. The purpose of this article is to explain you in details how we filled in the information asset register for Matomo. This work comes from our interpretation of the UK privacy commission resources (ICO). It cannot be considered as professional legal advice. So as GDPR, this information is subject to change.

  The information asset register is for us one of the most important parts of the GDPR implementation process. It consists of an inventory of all information systems you are using to process personal data, exactly like a ledger for an accountant. Note that small and medium-sized organizations could be exempted.

  Filling out this register can be a time-consuming activity. Therefore, we decided to show you a real case sample which we did for Matomo Analytics

• Error inclunding in FFMPEG project on a Mac using clang

  3 juillet 2018, par benwiz

  I’m having trouble running the remuxing.c example code. I get the following error. I have confirmed that the files can be found in /usr/local/include. I am running macOS Sierra 10.12.6.

  $ cc -v playground/remuxing.c
  
  Apple LLVM version 9.0.0 (clang-900.0.39.2)
  
  Target: x86_64-apple-darwin16.7.0
  
  Thread model: posix
  
  InstalledDir: /Library/Developer/CommandLineTools/usr/bin
  
   "/Library/Developer/CommandLineTools/usr/bin/clang" -cc1 -triple x86_64-apple-macosx10.12.0 -Wdeprecat
  
  ed-objc-isa-usage -Werror=deprecated-objc-isa-usage -emit-obj -mrelax-all -disable-free -disable-llvm-v
  
  erifier -discard-value-names -main-file-name remuxing.c -mrelocation-model pic -pic-level 2 -mthread-mo
  
  del posix -mdisable-fp-elim -fno-strict-return -masm-verbose -munwind-tables -target-cpu penryn -target
  
  -linker-version 305 -v -dwarf-column-info -debugger-tuning=lldb -resource-dir /Library/Developer/Comman
  
  dLineTools/usr/lib/clang/9.0.0 -fdebug-compilation-dir /Users/myuser/github/personal/synthesthesi
  
  a -ferror-limit 19 -fmessage-length 103 -stack-protector 1 -fblocks -fobjc-runtime=macosx-10.12.0 -fenc
  
  ode-extended-block-signature -fmax-type-align=16 -fdiagnostics-show-option -fcolor-diagnostics -o /var/
  
  folders/8s/2xc3v8dd7zz2c2trymzybvd534bnhg/T/remuxing-819223.o -x c playground/remuxing.c
  
  clang -cc1 version 9.0.0 (clang-900.0.39.2) default target x86_64-apple-darwin16.7.0
  
  #include "..." search starts here:
  
  #include <...> search starts here:
  
   /usr/local/include
  
   /Library/Developer/CommandLineTools/usr/lib/clang/9.0.0/include
  
   /Library/Developer/CommandLineTools/usr/include
  
   /usr/include
  
   /System/Library/Frameworks (framework directory)
  
   /Library/Frameworks (framework directory)
  
  End of search list.
  
   "/Library/Developer/CommandLineTools/usr/bin/ld" -demangle -lto_library /Library/Developer/CommandLineTools/usr/lib/libLTO.dylib -no_deduplicate -dynamic -arch x86_64 -macosx_version_min 10.12.0 -o a.out /var/folders/8s/2xc3v8dd7zz2c2trymzybvd534bnhg/T/remuxing-819223.o -lSystem /Library/Developer/CommandLineTools/usr/lib/clang/9.0.0/lib/darwin/libclang_rt.osx.a
  
  Undefined symbols for architecture x86_64:
  
    "_av_dump_format", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_freep", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_interleaved_write_frame", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_mallocz_array", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_packet_unref", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_read_frame", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_rescale_q", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_rescale_q_rnd", referenced from:
  
        _main in remuxing-819223.o
  
    "_av_strerror", referenced from:
  
        _av_make_error_string in remuxing-819223.o
  
    "_av_write_trailer", referenced from:
  
        _main in remuxing-819223.o
  
    "_avcodec_parameters_copy", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_alloc_output_context2", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_close_input", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_find_stream_info", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_free_context", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_new_stream", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_open_input", referenced from:
  
        _main in remuxing-819223.o
  
    "_avformat_write_header", referenced from:
  
        _main in remuxing-819223.o
  
    "_avio_closep", referenced from:
  
        _main in remuxing-819223.o
  
    "_avio_open", referenced from:
  
        _main in remuxing-819223.o
  
  ld: symbol(s) not found for architecture x86_64
  
  clang: error: linker command failed with exit code 1 (use -v to see invocation)