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• GDPR Compliance and Personal Data : The Ultimate Guide

  22 septembre 2023, par Erin — GDPR

  According to the International Data Corporation (IDC), the world generated 109 zettabytes of data in 2022 alone, and that number is on track to nearly triple to 291 zettabytes in 2027. For scale, that’s one trillion gigs or one followed by 21 zeros in bytes.

  A major portion of that data is generated online, and the conditions for securing that digital data can have major real-world consequences. For example, online identifiers that fall into the wrong hands can be used nefariously for cybercrime, identity theft or unwanted targeting. Users also want control over how their actions are tracked online and transparency into how their information is used.

  Therefore, regional and international regulations are necessary to set the terms for respecting users’ privacy and control over personal information. Perhaps the most widely known of these laws is the European Union’s General Data Protection Regulation (GDPR).

  What is personal data under GDPR ?

  Under the General Data Protection Regulation (GDPR), “personal data” refers to information linked to an identifiable natural person. An “identifiable natural person” is someone directly or indirectly recognisable via individually specific descriptors such as physical, genetic, economic, cultural, employment and social details.

  It’s important to note that under GDPR, the definition of personal data is very broad, and it encompasses both information that is commonly considered personal (e.g., names and addresses) and more technical or specialised data (e.g., IP addresses or device IDs) that can be used to identify individuals indirectly.

  Organisations that handle personal data must adhere to strict rules and principles regarding the processing and protection of this data to ensure individuals’ privacy rights are respected and upheld.

  Personal data can include, but is not limited to, the following :

  1. Basic Identity Information : This includes a person’s name, government-issued ID number, social address, phone number, email address or other similar identifiers.
  2. Biographical Information : Details such as date of birth, place of birth, nationality and gender.
  3. Contact Information : Information that allows communication with the individual, such as phone numbers, email addresses or mailing addresses.
  4. Financial Information : Data related to a person’s finances, including credit card numbers, bank account numbers, income records or financial transactions.
  5. Health and Medical Information : Information about a person’s health, medical history or healthcare treatments.
  6. Location Data : Data that can pinpoint a person’s geographical location, such as GPS coordinates or information derived from mobile devices.
  7. Online Identifiers : Information like IP addresses, cookies or other online tracking mechanisms that can be used to identify or track individuals online.
  8. Biometric Data : Unique physical or behavioural characteristics used for identification, such as fingerprints, facial recognition data or voiceprints.

  Sensitive Data

  Sensitive data is a special category of personal data prohibited from processing unless specific conditions are met, including users giving explicit consent. The data must also be necessary to fulfil one or more of a limited set of allowed purposes, such as reasons related to employment, social protections or legal claims.

  Sensitive information includes details about a person’s racial or ethnic origin, sexual orientation, political opinions, religion, trade union membership, biometric data or genetic data.

  What are the 7 main principles of GDPR ?

  The 7 principles of GDPR guide companies in how to properly handle personal data gathered from their users.

  

  The seven principles of GDPR are :

  1. Lawfulness, fairness and transparency

  Lawfulness means having legal grounds for data processing, such as consent, legitimate interests, contract and legal obligation. If you can achieve your objective without processing personal data, the basis is no longer lawful.

  Fairness means you’re processing data reasonably and in line with users’ best interests, and they wouldn’t be shocked if they find out what you’re using it for.

  Transparency means being open regarding when you’re processing user data, what you’re using it for and who you’re collecting it from.

  To get started with this, use our guide on creating a GDPR-compliant privacy policy.

  2. Purpose limitation

  You should only process user data for the original purposes you communicated to users when requesting their explicit consent. If you aim to undertake a new purpose, it must be compatible with the original stated purpose. Otherwise, you’ll need to ask for consent again.

  3. Data minimisation

  You should only collect as much data as you need to accomplish compliant objectives and nothing more, especially not other personally identifiable information (PII).

  Matomo provides several features for extensive data minimisation, including the ability to anonymize IP addresses.

  Data minimisation is well-liked by users. Around 70% of people have taken active steps towards protecting their identity online, so they’ll likely appreciate any principles that help them in this effort.

  

  4. Accuracy

  The user data you process should be accurate and up-to-date where necessary. You should have reasonable systems to catch inaccurate data and correct or delete it. If there are mistakes that you need to store, then you need to label them clearly as mistakes to keep them from being processed as accurate.

  5. Storage limitation

  This principle requires you to eliminate data you’re no longer using for the original purposes. You must implement time limits, after which you’ll delete or anonymize any user data on record. Matomo allows you to configure your system such that logs are automatically deleted after some time.

  6. Integrity and confidentiality

  This requires that data processors have security measures in place to protect data from threats such as hackers, loss and damage. As an open-source web analytics solution, Matomo enables you to verify its security first-hand.

  7. Accountability

  Accountability means you’re responsible for what you do with the data you collect. It’s your duty to maintain compliance and document everything for audits. Matomo tracks a lot of the data you’d need for this, including activity, task and application logs.

  Who does GDPR apply to ?

  The GDPR applies to any company that processes the personal data of EU citizens and residents (regardless of the location of the company). 

  If this is the first time you’ve heard about this, don’t worry ! Matomo provides tools that allow you to determine exactly what kinds of data you’re collecting and how they must be handled for full compliance. 

  Best practices for processing personal data under GDPR

  Companies subject to the GDPR need to be aware of several key principles and best practices to ensure they process personal data in a lawful and responsible manner.

  Here are some essential practices to implement :

  1. Lawful basis for processing : Organisations must have a lawful basis for processing personal data. Common lawful bases include the necessity of processing for compliance with a legal obligation, the performance of a contract, the protection of vital interests and tasks carried out in the public interest. Your organisation’s legitimate interests for processing must not override the individual’s legal rights. 
  2. Data minimisation : Collect and process only the personal data that is necessary for the specific purpose for which it was collected. Matomo’s anonymisation capabilities help you avoid collecting excessive or irrelevant data.
  3. Transparency : Provide clear and concise information to individuals about how their data will be processed. Privacy statements should be clear and accessible to users to allow them to easily understand how their data is used.
  4. Consent : If you are relying on consent as a lawful basis, make sure you design your privacy statements and consent forms to be usable. This lets you ensure that consent is freely given, specific, informed and unambiguous. Also, individuals must be able to withdraw their consent at any time.
  5. Data subject rights : You must have mechanisms in place to uphold the data subject’s individual rights, such as the rights to access, erase, rectify errors and restrict processing. Establish internal processes for handling such requests.
  6. Data protection impact assessments (DPIAs) : Conduct DPIAs for high-risk processing activities, especially when introducing new technologies or processing sensitive data.
  7. Security measures : You must implement appropriate technical security measures to maintain the safety of personal data. This can include ‌security tools such as encryption, firewalls and limited access controls, as well as organisational practices like regular security assessments. 
  8. Data breach response : Develop and maintain a data breach response plan. Notify relevant authorities and affected individuals of data breaches within the required timeframe.
  9. International data transfers : If transferring personal data outside the EU, ensure that appropriate safeguards are in place and consider GDPR provisions. These provisions allow data transfers from the EU to non-EU countries in three main ways :
     1. When the destination country has been deemed by the European Commission to have adequate data protection, making it similar to transferring data within the EU.
     2. Through the use of safeguards like binding corporate rules, approved contractual clauses or adherence to codes of conduct.
     3. In specific situations when none of the above apply, such as when an individual explicitly consents to the transfer after being informed of the associated risks.
  10. Data protection officers (DPOs) : Appoint a data protection officer if required by GDPR. DPOs are responsible for overseeing data protection compliance within the organisation.
  11. Privacy by design and default : Integrate data protection into the design of systems and processes. Default settings should prioritise user privacy, as is the case with something like Matomo’s first-party cookies.
  12. Documentation : Maintain records of data processing activities, including data protection policies, procedures and agreements. Matomo logs and backs up web server access, activity and more, providing a solid audit trail.
  13. Employee training : Employees who handle personal data must be properly trained to uphold data protection principles and GDPR compliance best practices. 
  14. Third-party contracts : If sharing data with third parties, have data processing agreements in place that outline the responsibilities and obligations of each party regarding data protection.
  15. Regular audits and assessments : Conduct periodic audits and assessments of data processing activities to ensure ongoing compliance. As mentioned previously, Matomo tracks and saves several key statistics and metrics that you’d need for a successful audit.
  16. Accountability : Demonstrate accountability by documenting and regularly reviewing compliance efforts. Be prepared to provide evidence of compliance to data protection authorities.
  17. Data protection impact on data analytics and marketing : Understand how GDPR impacts data analytics and marketing activities, including obtaining valid consent for marketing communications.

  Organisations should be on the lookout for GDPR updates, as the regulations may evolve over time. When in doubt, consult legal and privacy professionals to ensure compliance, as non-compliance could potentially result in significant fines, damage to reputation and legal consequences.

  What constitutes a GDPR breach ?

  Security incidents that compromise the confidentiality, integrity and/or availability of personal data are considered a breach under GDPR. This means a breach is not limited to leaks ; if you accidentally lose or delete personal data, its availability is compromised, which is technically considered a breach.

  What are the penalty fines for GDPR non-compliance ?

  The penalty fines for GDPR non-compliance are up to €20 million or up to 4% of the company’s revenue from the previous fiscal year, whichever is higher. This makes it so that small companies can also get fined, no matter how low-profile the breach is.

  In 2022, for instance, a company found to have mishandled user data was fined €2,000, and the webmaster responsible was personally fined €150.

  Is Matomo GDPR compliant ?

  Matomo is fully GDPR compliant and can ensure you achieve compliance, too. Here’s how :

  • Data anonymization and IP anonymization
  • GDPR Manager that helps you identify gaps in your compliance and address them effectively
  • Users can opt-out of all tracking
  • First-party cookies by default
  • Users can view the data collected
  • Capabilities to delete visitor data when requested
  • You own your data and it is not used for any other purposes (like advertising)
  • Visitor logs and profiles can be disabled
  • Data is stored in the EU (Matomo Cloud) or in any country of your choice (Matomo On-Premise)

  Is there a GDPR in the US ?

  There is no GDPR-equivalent law that covers the US as a whole. That said, US-based companies processing data from persons in the EU still need to adhere to GDPR principles.

  While there isn’t a federal data protection law, several states have enacted their own. One notable example is the California Consumer Privacy Act (CCPA), which Matomo is fully compliant with.

  Ready for GDPR-compliant analytics ?

  The GDPR lays out a set of regulations and penalties that govern the collection and processing of personal data from EU citizens and residents. A breach under GDPR attracts a fine of either up to €20 million or 4% of the company’s revenue, and the penalty applies to companies of all sizes.

  Matomo is fully GDPR compliant and provides several features and advanced privacy settings to ensure you ‌are as well, without sacrificing the resources you need for effective analytics. If you’re ready to get started, sign up for a 21-day free trial of Matomo — no credit card required.

  Disclaimer
  We are not lawyers and don’t claim to be. The information provided here is to help give an introduction to GDPR. We encourage every business and website to take data privacy seriously and discuss these issues with your lawyer if you have any concerns.

• What flags should enable to get maximum performance using ffpeg ?

  19 octobre 2017, par Sam

  I am using windows, my application is using opencv and for codecs, we have used ffmpeg. We see the performance is very slow, we want to improve it by compiling ffmpeg with all flags which could take hardware and GPU acceleation into consideration.
  I did ./configure --help inside the ffmpeg source, I see below list option, can you please tell which all can really imporve the performance. Note that we would like to take advantage of hardware and gpu capabilities.

      $ ./configure —help
  
      Usage : configure [options]
  
      Options : [defaults in brackets after descriptions]
      Help options :
  
        —help                   print this message
  
        —quiet                  Suppress showing informative output
  
        —list-decoders          show all available decoders
  
        —list-encoders          show all available encoders
  
        —list-hwaccels          show all available hardware accelerators
  
        —list-demuxers          show all available demuxers
  
        —list-muxers            show all available muxers
  
        —list-parsers           show all available parsers
  
        —list-protocols         show all available protocols
  
        —list-bsfs              show all available bitstream filters
  
        —list-indevs            show all available input devices
  
        —list-outdevs           show all available output devices
  
        —list-filters           show all available filters
      Standard options :
  
        —logfile=FILE           log tests and output to FILE [ffbuild/config.log]
  
        —disable-logging        do not log configure debug information
  
        —fatal-warnings         fail if any configure warning is generated
  
        —prefix=PREFIX          install in PREFIX [/usr/local]
  
        —bindir=DIR             install binaries in DIR [PREFIX/bin]
  
        —datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
  
        —docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg                                                                                                      ]
  
        —libdir=DIR             install libs in DIR [PREFIX/lib]
  
        —shlibdir=DIR           install shared libs in DIR [LIBDIR]
  
        —incdir=DIR             install includes in DIR [PREFIX/include]
  
        —mandir=DIR             install man page in DIR [PREFIX/share/man]
  
        —pkgconfigdir=DIR       install pkg-config files in DIR [LIBDIR/pkgconfig]
  
        —enable-rpath           use rpath to allow installing libraries in paths
  
                                 not part of the dynamic linker search path
  
                                 use rpath when linking programs (USE WITH CARE)
  
        —install-name-dir=DIR   Darwin directory name for installed targets
      Licensing options :
  
        —enable-gpl             allow use of GPL code, the resulting libs
  
                                 and binaries will be under GPL [no]
  
        —enable-version3        upgrade (L)GPL to version 3 [no]
  
        —enable-nonfree         allow use of nonfree code, the resulting libs
  
                                 and binaries will be unredistributable [no]
      Configuration options :
  
        —disable-static         do not build static libraries [no]
  
        —enable-shared          build shared libraries [no]
  
        —enable-small           optimize for size instead of speed
  
        —disable-runtime-cpudetect disable detecting CPU capabilities at runtime (sma                                                                                                      ller binary)
  
        —enable-gray            enable full grayscale support (slower color)
  
        —disable-swscale-alpha  disable alpha channel support in swscale
  
        —disable-all            disable building components, libraries and programs
  
        —disable-autodetect     disable automatically detected external libraries [no                                                                                                      ]
      Program options :
  
        —disable-programs       do not build command line programs
  
        —disable-ffmpeg         disable ffmpeg build
  
        —disable-ffplay         disable ffplay build
  
        —disable-ffprobe        disable ffprobe build
  
        —disable-ffserver       disable ffserver build
      Documentation options :
  
        —disable-doc            do not build documentation
  
        —disable-htmlpages      do not build HTML documentation pages
  
        —disable-manpages       do not build man documentation pages
  
        —disable-podpages       do not build POD documentation pages
  
        —disable-txtpages       do not build text documentation pages
      Component options :
  
        —disable-avdevice       disable libavdevice build
  
        —disable-avcodec        disable libavcodec build
  
        —disable-avformat       disable libavformat build
  
        —disable-swresample     disable libswresample build
  
        —disable-swscale        disable libswscale build
  
        —disable-postproc       disable libpostproc build
  
        —disable-avfilter       disable libavfilter build
  
        —enable-avresample      enable libavresample build [no]
  
        —disable-pthreads       disable pthreads [autodetect]
  
        —disable-w32threads     disable Win32 threads [autodetect]
  
        —disable-os2threads     disable OS/2 threads [autodetect]
  
        —disable-network        disable network support [no]
  
        —disable-dct            disable DCT code
  
        —disable-dwt            disable DWT code
  
        —disable-error-resilience disable error resilience code
  
        —disable-lsp            disable LSP code
  
        —disable-lzo            disable LZO decoder code
  
        —disable-mdct           disable MDCT code
  
        —disable-rdft           disable RDFT code
  
        —disable-fft            disable FFT code
  
        —disable-faan           disable floating point AAN (I)DCT code
  
        —disable-pixelutils     disable pixel utils in libavutil
      Individual component options :
  
        —disable-everything     disable all components listed below
  
        —disable-encoder=NAME   disable encoder NAME
  
        —enable-encoder=NAME    enable encoder NAME
  
        —disable-encoders       disable all encoders
  
        —disable-decoder=NAME   disable decoder NAME
  
        —enable-decoder=NAME    enable decoder NAME
  
        —disable-decoders       disable all decoders
  
        —disable-hwaccel=NAME   disable hwaccel NAME
  
        —enable-hwaccel=NAME    enable hwaccel NAME
  
        —disable-hwaccels       disable all hwaccels
  
        —disable-muxer=NAME     disable muxer NAME
  
        —enable-muxer=NAME      enable muxer NAME
  
        —disable-muxers         disable all muxers
  
        —disable-demuxer=NAME   disable demuxer NAME
  
        —enable-demuxer=NAME    enable demuxer NAME
  
        —disable-demuxers       disable all demuxers
  
        —enable-parser=NAME     enable parser NAME
  
        —disable-parser=NAME    disable parser NAME
  
        —disable-parsers        disable all parsers
  
        —enable-bsf=NAME        enable bitstream filter NAME
  
        —disable-bsf=NAME       disable bitstream filter NAME
  
        —disable-bsfs           disable all bitstream filters
  
        —enable-protocol=NAME   enable protocol NAME
  
        —disable-protocol=NAME  disable protocol NAME
  
        —disable-protocols      disable all protocols
  
        —enable-indev=NAME      enable input device NAME
  
        —disable-indev=NAME     disable input device NAME
  
        —disable-indevs         disable input devices
  
        —enable-outdev=NAME     enable output device NAME
  
        —disable-outdev=NAME    disable output device NAME
  
        —disable-outdevs        disable output devices
  
        —disable-devices        disable all devices
  
        —enable-filter=NAME     enable filter NAME
  
        —disable-filter=NAME    disable filter NAME
  
        —disable-filters        disable all filters
  
        —disable-v4l2_m2m       disable V4L2 mem2mem code [autodetect]
      External library support :
        Using any of the following switches will allow FFmpeg to link to the
  
        corresponding external library. All the components depending on that library
  
        will become enabled, if all their other dependencies are met and they are not
  
        explicitly disabled. E.g. —enable-libwavpack will enable linking to
  
        libwavpack and allow the libwavpack encoder to be built, unless it is
  
        specifically disabled with —disable-encoder=libwavpack.
        Note that only the system libraries are auto-detected. All the other external
  
        libraries must be explicitly enabled.
        Also note that the following help text describes the purpose of the libraries
  
        themselves, not all their features will necessarily be usable by FFmpeg.
        —disable-alsa           disable ALSA support [autodetect]
  
        —disable-appkit         disable Apple AppKit framework [autodetect]
  
        —disable-avfoundation   disable Apple AVFoundation framework [autodetect]
  
        —enable-avisynth        enable reading of AviSynth script files [no]
  
        —disable-bzlib          disable bzlib [autodetect]
  
        —disable-coreimage      disable Apple CoreImage framework [autodetect]
  
        —enable-chromaprint     enable audio fingerprinting with chromaprint [no]
  
        —enable-frei0r          enable frei0r video filtering [no]
  
        —enable-gcrypt          enable gcrypt, needed for rtmp(t)e support
  
                                 if openssl, librtmp or gmp is not used [no]
  
        —enable-gmp             enable gmp, needed for rtmp(t)e support
  
                                 if openssl or librtmp is not used [no]
  
        —enable-gnutls          enable gnutls, needed for https support
  
                                 if openssl is not used [no]
  
        —disable-iconv          disable iconv [autodetect]
  
        —disable-jack           disable libjack support [autodetect]
  
        —enable-jni             enable JNI support [no]
  
        —enable-ladspa          enable LADSPA audio filtering [no]
  
        —enable-libass          enable libass subtitles rendering,
  
                                 needed for subtitles and ass filter [no]
  
        —enable-libbluray       enable BluRay reading using libbluray [no]
  
        —enable-libbs2b         enable bs2b DSP library [no]
  
        —enable-libcaca         enable textual display using libcaca [no]
  
        —enable-libcelt         enable CELT decoding via libcelt [no]
  
        —enable-libcdio         enable audio CD grabbing with libcdio [no]
  
        —enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
  
                                 and libraw1394 [no]
  
        —enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
  
        —enable-libflite        enable flite (voice synthesis) support via libflite [                                                                                                      no]
  
        —enable-libfontconfig   enable libfontconfig, useful for drawtext filter [no]
  
        —enable-libfreetype     enable libfreetype, needed for drawtext filter [no]
  
        —enable-libfribidi      enable libfribidi, improves drawtext filter [no]
  
        —enable-libgme          enable Game Music Emu via libgme [no]
  
        —enable-libgsm          enable GSM de/encoding via libgsm [no]
  
        —enable-libiec61883     enable iec61883 via libiec61883 [no]
  
        —enable-libilbc         enable iLBC de/encoding via libilbc [no]
  
        —enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
  
        —enable-libmodplug      enable ModPlug via libmodplug [no]
  
        —enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
  
        —enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no                                                                                                      ]
  
        —enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
  
        —enable-libopencv       enable video filtering via libopencv [no]
  
        —enable-libopenh264     enable H.264 encoding via OpenH264 [no]
  
        —enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
  
        —enable-libopenmpt      enable decoding tracked files via libopenmpt [no]
  
        —enable-libopus         enable Opus de/encoding via libopus [no]
  
        —enable-libpulse        enable Pulseaudio input via libpulse [no]
  
        —enable-librsvg         enable SVG rasterization via librsvg [no]
  
        —enable-librubberband   enable rubberband needed for rubberband filter [no]
  
        —enable-librtmp         enable RTMP[E] support via librtmp [no]
  
        —enable-libshine        enable fixed-point MP3 encoding via libshine [no]
  
        —enable-libsmbclient    enable Samba protocol via libsmbclient [no]
  
        —enable-libsnappy       enable Snappy compression, needed for hap encoding [n                                                                                                      o]
  
        —enable-libsoxr         enable Include libsoxr resampling [no]
  
        —enable-libspeex        enable Speex de/encoding via libspeex [no]
  
        —enable-libssh          enable SFTP protocol via libssh [no]
  
        —enable-libtesseract    enable Tesseract, needed for ocr filter [no]
  
        —enable-libtheora       enable Theora encoding via libtheora [no]
  
        —enable-libtwolame      enable MP2 encoding via libtwolame [no]
  
        —enable-libv4l2         enable libv4l2/v4l-utils [no]
  
        —enable-libvidstab      enable video stabilization using vid.stab [no]
  
        —enable-libvmaf         enable vmaf filter via libvmaf [no]
  
        —enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
  
        —enable-libvorbis       enable Vorbis en/decoding via libvorbis,
  
                                 native implementation exists [no]
  
        —enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
  
        —enable-libwavpack      enable wavpack encoding via libwavpack [no]
  
        —enable-libwebp         enable WebP encoding via libwebp [no]
  
        —enable-libx264         enable H.264 encoding via x264 [no]
  
        —enable-libx265         enable HEVC encoding via x265 [no]
  
        —enable-libxavs         enable AVS encoding via xavs [no]
  
        —enable-libxcb          enable X11 grabbing using XCB [autodetect]
  
        —enable-libxcb-shm      enable X11 grabbing shm communication [autodetect]
  
        —enable-libxcb-xfixes   enable X11 grabbing mouse rendering [autodetect]
  
        —enable-libxcb-shape    enable X11 grabbing shape rendering [autodetect]
  
        —enable-libxvid         enable Xvid encoding via xvidcore,
  
                                 native MPEG-4/Xvid encoder exists [no]
  
        —enable-libxml2         enable XML parsing using the C library libxml2 [no]
  
        —enable-libzimg         enable z.lib, needed for zscale filter [no]
  
        —enable-libzmq          enable message passing via libzmq [no]
  
        —enable-libzvbi         enable teletext support via libzvbi [no]
  
        —disable-lzma           disable lzma [autodetect]
  
        —enable-decklink        enable Blackmagic DeckLink I/O support [no]
  
        —enable-libndi_newtek   enable Newteck NDI I/O support [no]
  
        —enable-mediacodec      enable Android MediaCodec support [no]
  
        —enable-libmysofa       enable libmysofa, needed for sofalizer filter [no]
  
        —enable-openal          enable OpenAL 1.1 capture support [no]
  
        —enable-opencl          enable OpenCL code
  
        —enable-opengl          enable OpenGL rendering [no]
  
        —enable-openssl         enable openssl, needed for https support
  
                                 if gnutls is not used [no]
  
        —disable-sndio          disable sndio support [autodetect]
  
        —disable-schannel       disable SChannel SSP, needed for TLS support on
  
                                 Windows if openssl and gnutls are not used [autodetec                                                                                                      t]
  
        —disable-sdl2           disable sdl2 [autodetect]
  
        —disable-securetransport disable Secure Transport, needed for TLS support
  
                                 on OSX if openssl and gnutls are not used [autodetect                                                                                                      ]
  
        —disable-xlib           disable xlib [autodetect]
  
        —disable-zlib           disable zlib [autodetect]
        The following libraries provide various hardware acceleration features :
  
        —disable-audiotoolbox   disable Apple AudioToolbox code [autodetect]
  
        —disable-cuda           disable dynamically linked Nvidia CUDA code [autodete                                                                                                      ct]
  
        —enable-cuda-sdk        enable CUDA features that require the CUDA SDK [no]
  
        —disable-cuvid          disable Nvidia CUVID support [autodetect]
  
        —disable-d3d11va        disable Microsoft Direct3D 11 video acceleration code                                                                                                       [autodetect]
  
        —disable-dxva2          disable Microsoft DirectX 9 video acceleration code [                                                                                                      autodetect]
  
        —enable-libdrm          enable DRM code (Linux) [no]
  
        —enable-libmfx          enable Intel MediaSDK (AKA Quick Sync Video) code via                                                                                                       libmfx [no]
  
        —enable-libnpp          enable Nvidia Performance Primitives-based code [no]
  
        —enable-mmal            enable Broadcom Multi-Media Abstraction Layer (Raspbe                                                                                                      rry Pi) via MMAL [no]
  
        —disable-nvenc          disable Nvidia video encoding code [autodetect]
  
        —enable-omx             enable OpenMAX IL code [no]
  
        —enable-omx-rpi         enable OpenMAX IL code for Raspberry Pi [no]
  
        —enable-rkmpp           enable Rockchip Media Process Platform code [no]
  
        —disable-vaapi          disable Video Acceleration API (mainly Unix/Intel) co                                                                                                      de [autodetect]
  
        —disable-vda            disable Apple Video Decode Acceleration code [autodet                                                                                                      ect]
  
        —disable-vdpau          disable Nvidia Video Decode and Presentation API for                                                                                                       Unix code [autodetect]
  
        —disable-videotoolbox   disable VideoToolbox code [autodetect]
      Toolchain options :
  
        —arch=ARCH              select architecture []
  
        —cpu=CPU                select the minimum required CPU (affects
  
                                 instruction selection, may crash on older CPUs)
  
        —cross-prefix=PREFIX    use PREFIX for compilation tools []
  
        —progs-suffix=SUFFIX    program name suffix []
  
        —enable-cross-compile   assume a cross-compiler is used
  
        —sysroot=PATH           root of cross-build tree
  
        —sysinclude=PATH        location of cross-build system headers
  
        —target-os=OS           compiler targets OS []
  
        —target-exec=CMD        command to run executables on target
  
        —target-path=DIR        path to view of build directory on target
  
        —target-samples=DIR     path to samples directory on target
  
        —tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
  
        —toolchain=NAME         set tool defaults according to NAME
  
        —nm=NM                  use nm tool NM [nm -g]
  
        —ar=AR                  use archive tool AR [ar]
  
        —as=AS                  use assembler AS []
  
        —ln_s=LN_S              use symbolic link tool LN_S [ln -s -f]
  
        —strip=STRIP            use strip tool STRIP [strip]
  
        —windres=WINDRES        use windows resource compiler WINDRES [windres]
  
        —x86asmexe=EXE          use nasm-compatible assembler EXE [nasm]
  
        —cc=CC                  use C compiler CC [gcc]
  
        —cxx=CXX                use C compiler CXX [g++]
  
        —objcc=OCC              use ObjC compiler OCC [gcc]
  
        —dep-cc=DEPCC           use dependency generator DEPCC [gcc]
  
        —nvcc=NVCC              use Nvidia CUDA compiler NVCC [nvcc]
  
        —ld=LD                  use linker LD []
  
        —pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [pkg-config]
  
        —pkg-config-flags=FLAGS pass additional flags to pkgconf []
  
        —ranlib=RANLIB          use ranlib RANLIB [ranlib]
  
        —doxygen=DOXYGEN        use DOXYGEN to generate API doc [doxygen]
  
        —host-cc=HOSTCC         use host C compiler HOSTCC
  
        —host-cflags=HCFLAGS    use HCFLAGS when compiling for host
  
        —host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
  
        —host-ld=HOSTLD         use host linker HOSTLD
  
        —host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
  
        —host-libs=HLIBS        use libs HLIBS when linking for host
  
        —host-os=OS             compiler host OS []
  
        —extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS []
  
        —extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS []
  
        —extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS []
  
        —extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS []
  
        —extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS []
  
        —extra-ldlibflags=ELDFLAGS add ELDFLAGS to LDLIBFLAGS []
  
        —extra-libs=ELIBS       add ELIBS []
  
        —extra-version=STRING   version string suffix []
  
        —optflags=OPTFLAGS      override optimization-related compiler flags
  
        —nvccflags=NVCCFLAGS    override nvcc flags [-gencode arch=compute_30,code=sm                                                                                                      _30 -O2]
  
        —build-suffix=SUFFIX    library name suffix []
  
        —enable-pic             build position-independent code
  
        —enable-thumb           compile for Thumb instruction set
  
        —enable-lto             use link-time optimization
  
        —env="ENV=override"     override the environment variables
      Advanced options (experts only) :
  
        —malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
  
        —custom-allocator=NAME  use a supported custom allocator
  
        —disable-symver         disable symbol versioning
  
        —enable-hardcoded-tables use hardcoded tables instead of runtime generation
  
        —disable-safe-bitstream-reader
  
                                 disable buffer boundary checking in bitreaders
  
                                 (faster, but may crash)
  
        —sws-max-filter-size=N  the max filter size swscale uses [256]
      Optimization options (experts only) :
  
        —disable-asm            disable all assembly optimizations
  
        —disable-altivec        disable AltiVec optimizations
  
        —disable-vsx            disable VSX optimizations
  
        —disable-power8         disable POWER8 optimizations
  
        —disable-amd3dnow       disable 3DNow ! optimizations
  
        —disable-amd3dnowext    disable 3DNow ! extended optimizations
  
        —disable-mmx            disable MMX optimizations
  
        —disable-mmxext         disable MMXEXT optimizations
  
        —disable-sse            disable SSE optimizations
  
        —disable-sse2           disable SSE2 optimizations
  
        —disable-sse3           disable SSE3 optimizations
  
        —disable-ssse3          disable SSSE3 optimizations
  
        —disable-sse4           disable SSE4 optimizations
  
        —disable-sse42          disable SSE4.2 optimizations
  
        —disable-avx            disable AVX optimizations
  
        —disable-xop            disable XOP optimizations
  
        —disable-fma3           disable FMA3 optimizations
  
        —disable-fma4           disable FMA4 optimizations
  
        —disable-avx2           disable AVX2 optimizations
  
        —disable-aesni          disable AESNI optimizations
  
        —disable-armv5te        disable armv5te optimizations
  
        —disable-armv6          disable armv6 optimizations
  
        —disable-armv6t2        disable armv6t2 optimizations
  
        —disable-vfp            disable VFP optimizations
  
        —disable-neon           disable NEON optimizations
  
        —disable-inline-asm     disable use of inline assembly
  
        —disable-x86asm         disable use of standalone x86 assembly
  
        —disable-mipsdsp        disable MIPS DSP ASE R1 optimizations
  
        —disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
  
        —disable-msa            disable MSA optimizations
  
        —disable-mipsfpu        disable floating point MIPS optimizations
  
        —disable-mmi            disable Loongson SIMD optimizations
  
        —disable-fast-unaligned consider unaligned accesses slow
      Developer options (useful when working on FFmpeg itself) :
  
        —disable-debug          disable debugging symbols
  
        —enable-debug=LEVEL     set the debug level []
  
        —disable-optimizations  disable compiler optimizations
  
        —enable-extra-warnings  enable more compiler warnings
  
        —disable-stripping      disable stripping of executables and shared libraries
  
        —assert-level=level     0(default), 1 or 2, amount of assertion testing,
  
                                 2 causes a slowdown at runtime.
  
        —enable-memory-poisoning fill heap uninitialized allocated space with arbitra                                                                                                      ry data
  
        —valgrind=VALGRIND      run "make fate" tests through valgrind to detect memo                                                                                                      ry
  
                                 leaks and errors, using the specified valgrind binary                                                                                                      .
  
                                 Cannot be combined with —target-exec
  
        —enable-ftrapv          Trap arithmetic overflows
  
        —samples=PATH           location of test samples for FATE, if not set use
  
                                 $FATE_SAMPLES at make invocation time.
  
        —enable-neon-clobber-test check NEON registers for clobbering (should be
  
                                 used only for debugging purposes)
  
        —enable-xmm-clobber-test check XMM registers for clobbering (Win64-only ;
  
                                 should be used only for debugging purposes)
  
        —enable-random          randomly enable/disable components
  
        —disable-random
  
        —enable-random=LIST     randomly enable/disable specific components or
  
        —disable-random=LIST    component groups. LIST is a comma-separated list
  
                                 of NAME[:PROB] entries where NAME is a component
  
                                 (group) and PROB the probability associated with
  
                                 NAME (default 0.5).
  
        —random-seed=VALUE      seed value for —enable/disable-random
  
        —disable-valgrind-backtrace do not print a backtrace under Valgrind
  
                                 (only applies to —disable-optimizations builds)
  
        —enable-osfuzz          Enable building fuzzer tool
  
        —libfuzzer=PATH         path to libfuzzer
  
        —ignore-tests=TESTS     comma-separated list (without "fate-" prefix
  
                                 in the name) of tests whose result is ignored
  
        —enable-linux-perf      enable Linux Performance Monitor API
      NOTE : Object files are built at the place where configure is launched.
  

• Revision 32596 : minuscules et fin pour aujourd’hui

  1er novembre 2009, par fil@… — Log

  minuscules et fin pour aujourd’hui