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• Wrong Bitrate after ffmpeg WAV to MP3 Conversion

  27 février 2015, par Nick Weisser

  I converted a WAV file to MP3. ffmpeg’s output states that it’s being converted into 128k bitrate, but it ends up with only 32k bitrate.

  # ffmpeg -i 3.28.09.WAV -acodec libmp3lame -ab 128k 3.28.09.mp3
  
  ffmpeg version 0.8.6-6:0.8.6-1, Copyright (c) 2000-2013 the Libav developers
  
    built on Mar 24 2013 07:20:17 with gcc 4.7.2
  
  *** THIS PROGRAM IS DEPRECATED ***
  
  This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
  
  [wav @ 0x954f800] max_analyze_duration reached
  
  Input #0, wav, from '3.28.09.WAV':
  
    Duration: 00:27:07.47, bitrate: 2304 kb/s
  
      Stream #0.0: Audio: pcm_s24le, 48000 Hz, 2 channels, s32, 2304 kb/s
  
  Incompatible sample format 's32' for codec 'libmp3lame', auto-selecting format 's16'
  
  Output #0, mp3, to '3.28.09.mp3':
  
    Metadata:
  
      TSSE            : Lavf53.21.1
  
      Stream #0.0: Audio: libmp3lame, 48000 Hz, 2 channels, s16, 128 kb/s
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
  Press ctrl-c to stop encoding
  
  size=   25430kB time=1627.51 bitrate= 128.0kbits/s    
  
  video:0kB audio:25430kB global headers:0kB muxing overhead 0.000495%

  The original WAV file is RIFF (little-endian) data, WAVE audio, Microsoft PCM, 24 bit, stereo 48000 Hz.

  The output MP3 file is an audio file with ID3 version 2.4.0, contains : MPEG ADTS, layer III, v1, 32 kbps, 48 kHz, Stereo when inspected with the file utility. My PHP library getID3 also state.

  # ffmpeg -i 3.28.09.mp3
  
  ffmpeg version 0.8.6-6:0.8.6-1, Copyright (c) 2000-2013 the Libav developers
  
    built on Mar 24 2013 07:20:17 with gcc 4.7.2
  
  *** THIS PROGRAM IS DEPRECATED ***
  
  This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
  
  [mp3 @ 0x8f56800] max_analyze_duration reached
  
  Input #0, mp3, from '3.28.09.mp3':
  
    Metadata:
  
      encoder         : Lavf53.21.1
  
    Duration: 00:27:07.51, start: 0.000000, bitrate: 128 kb/s
  
      Stream #0.0: Audio: mp3, 48000 Hz, stereo, s16, 128 kb/s
  
  At least one output file must be specified

  Any ideas what I might be missing here ?

• Compiling ffmpeg for chromium on Windows

  7 janvier 2019, par ykhandel

  I am following the instructions here to generate the gn files for Chromium. I have installed the cygwin base package along with diffutils, nasm, make and python.

  Also, I have copied chromium/scripts/cygwin-wrapper to /usr/local/bin

  1. Started C :\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\Tools\VsDevCmd.bat

  2. Started C :\cygwin\cygwin.bat

  3. cd to third_party\chromium\scripts

  4. python build_ffmpeg win ia32

  I am getting some warnings plus this :

  Could not create temporary library.
  make : *** [/cygdrive/d/src/chromium/src/third_party/ffmpeg/ffbuild/library.mak:102 : libavutil/avutil-56.dll] Error 1

  make : *** Waiting for unfinished jobs....

  Could not create temporary library.

  Could not create temporary library.

  make : *** [/cygdrive/d/src/chromium/src/third_party/ffmpeg/ffbuild/library.mak:102 : libavcodec/avcodec-58.dll] Error 1

  make : *** [/cygdrive/d/src/chromium/src/third_party/ffmpeg/ffbuild/library.mak:102 : libavformat/avformat-58.dll] Error 1

  Traceback (most recent call last) :

  File "build_ffmpeg.py", line 900, in

  sys.exit(main(sys.argv[1 :]))

  File "build_ffmpeg.py", line 502, in main

  options=options)

  File "build_ffmpeg.py", line 876, in ConfigureAndBuild

  configure_args)

  File "build_ffmpeg.py", line 870, in do_build_ffmpeg

  options.config_only, branding, configure_flags)

  File "build_ffmpeg.py", line 408, in BuildFFmpeg

  [’make’, ’-j%d’ % parallel_jobs] + libraries, cwd=config_dir)

  File "build_ffmpeg.py", line 106, in PrintAndCheckCall

  subprocess.check_call(argv, *args, **kwargs)

  File "/usr/lib/python2.7/subprocess.py", line 186, in check_call

  raise CalledProcessError(retcode, cmd)

  subprocess.CalledProcessError : Command ’[’make’, ’-j8’, ’libavcodec/avcodec-
  58.dll’, ’libavformat/avformat-58.dll’, ’libavutil/avutil-56.dll’]’ returned non-zero exit status 2

• Data Privacy Day 2021 : Five ways to embrace privacy into your business

  27 janvier 2021, par Matomo Core Team — Community, Privacy

  Welcome to Data Privacy Day 2021 !

  This year we are excited to announce that we are participating as a #PrivacyAware Champion for DPD21 through the National Cyber Security Alliance. This means that on this significant day we are in partnership with hundreds of other organisations and businesses to share a unified message that empowers individuals to “Own Your Privacy” and for organisations to “Respect Privacy.”

  "Last year dawned a new era in the way many businesses operate from a traditional office work setting to a remote working from home environment for employees. This now means it’s more important than ever for your employees to understand how to take ownership of their privacy when working online."

  As a Data Privacy Day #PrivacyAware Champion we would like to provide some practical tips and share examples of how the Matomo team helps employees be privacy aware.

  

  Five ways to embrace privacy into your business

  1. Create a privacy aware culture within your business

  • Get leadership involved.
  • Appoint privacy ambassadors within your team. 
  • Create a privacy awareness campaign where you educate employees on your company privacy policy. 
  • Share messages about privacy around the office/or in meetings online, on internal message boards, in company newsletters, or emails. 
  • Teach new employees their role in your privacy culture and reinforce throughout their career.

  2. Organise privacy awareness training for your employees

  • Invite outside speakers to talk to employees about why privacy matters. 
  • Engage staff by asking them to consider how privacy and data security applies to the work they do on a daily basis.
  • Encourage employees to complete online courses to gain a better understanding of how to avoid privacy risks.

  3. Help employees manage their individual privacy

  • Better security and privacy behaviours at home will translate to better security and privacy practices at work. 
  • Teach employees how to update their privacy and security settings on personal accounts.
  • Use NCSA’s privacy settings page to help them get started

  4. Add privacy to the employee’s toolbox

  • Give your employees actual tools they can use to improve their privacy, such as company-branded camera covers or privacy screens for their devices, or virtual private networks (VPNs) to secure their connections.

  5. Join Matomo and we’ll be your web analytics experts

  • At Matomo, ensuring our users and customers that their privacy is protected is not only a core component of the work we do, it’s why we do what we do ! Find out how.

  Want to find out more about data privacy download your free DPD 2021 Champion Toolkit and read our post on “Why is privacy important”.

  Team Matomo

  2021 Data Privacy Day Toolkit

  Your guide to Data Privacy Day, January 28, 2021

  Free Download