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• checkasm/vf_blend : add test for 16 bit version of

  17 mars 2018, par Martin Vignali

  checkasm/vf_blend : add test for 16 bit version of
  grainextract
  
  grainmerge
  
  average
  
  extremity
  
  negation
  

  • [DH] tests/checkasm/vf_blend.c

• Extract Video Frames In Python

  28 février 2024, par TheNone

  I want to extract video frames and save them as image.

  



  import os, sys
from PIL import Image

a, b, c = os.popen3("ffmpeg -i test.avi")
out = c.read()
dp = out.index("Duration: ")
duration = out[dp+10:dp+out[dp:].index(",")]
hh, mm, ss = map(float, duration.split(":"))
total = (hh*60 + mm)*60 + ss
for i in xrange(9):
    t = (i + 1) * total / 10
    os.system("ffmpeg -i test.avi -ss %0.3fs frame%i.png" % (t, i))


  



  But I have this error :

  



  FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
  configuration:  --enable-memalign-hack --enable-mp3lame --enable-gpl --disable-vhook --disable-ffplay --disable-ffserver --enable-a52 --enable-xvid --enable-faac --enable-faad --enable-amr_nb --enable-amr_wb --enable-pthreads --enable-x264 
  libavutil version: 49.0.0
  libavcodec version: 51.9.0
  libavformat version: 50.4.0
  built on Apr 15 2006 04:58:19, gcc: 4.0.1 (Apple Computer, Inc. build 5250)
Input #0, avi, from 'test.avi':
  Duration: 00:00:30.5, start: 0.000000, bitrate: 465 kb/s
  Stream #0.0, 25.00 fps(r): Video: mpeg4, yuv420p, 640x480
  Stream #0.1: Audio: mp3, 32000 Hz, mono, 32 kb/s
Unable for find a suitable output format for 'frame0.png'


  



  Edit : ffmpeg -formats

  



  FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
Mac OSX universal build for ffmpegX
  configuration:  --enable-memalign-hack --enable-mp3lame --enable-gpl --disable-vhook --disable-ffplay --disable-ffserver --enable-a52 --enable-xvid --enable-faac --enable-faad --enable-amr_nb --enable-amr_wb --enable-pthreads --enable-x264 
  libavutil version: 49.0.0
  libavcodec version: 51.9.0
  libavformat version: 50.4.0
  built on Apr 15 2006 04:58:19, gcc: 4.0.1 (Apple Computer, Inc. build 5250)
File formats:
  E 3g2             3gp2 format
  E 3gp             3gp format
 D  4xm             4X Technologies format
 D  RoQ             Id RoQ format
 D  aac             ADTS AAC
 DE ac3             raw ac3
  E adts            ADTS AAC
 DE aiff            Audio IFF
 DE alaw            pcm A law format
 DE amr             3gpp amr file format
 DE asf             asf format
  E asf_stream      asf format
 DE au              SUN AU Format
 DE avi             avi format
 D  avs             avs format
  E crc             crc testing format
 D  daud            D-Cinema audio format
 D  dts             raw dts
 DE dv              DV video format
  E dvd             MPEG2 PS format (DVD VOB)
 D  ea              Electronic Arts Multimedia Format
 DE ffm             ffm format
 D  film_cpk        Sega FILM/CPK format
 D  flic            FLI/FLC/FLX animation format
 DE flv             flv format
  E framecrc        framecrc testing format
 DE gif             GIF Animation
 DE h261            raw h261
 DE h263            raw h263
 DE h264            raw H264 video format
 D  idcin           Id CIN format
 DE image           image sequence
 DE image2          image2 sequence
 DE image2pipe      piped image2 sequence
 DE imagepipe       piped image sequence
 D  ingenient       Ingenient MJPEG
 D  ipmovie         Interplay MVE format
 DE m4v             raw MPEG4 video format
 D  matroska        Matroska file format
 DE mjpeg           MJPEG video
 D  mm              American Laser Games MM format
 DE mmf             mmf format
  E mov             mov format
 D  mov,mp4,m4a,3gp,3g2,mj2 QuickTime/MPEG4/Motion JPEG 2000 format
  E mp2             MPEG audio layer 2
 DE mp3             MPEG audio layer 3
  E mp4             mp4 format
 DE mpeg            MPEG1 System format
  E mpeg1video      MPEG video
  E mpeg2video      MPEG2 video
 DE mpegts          MPEG2 transport stream format
 D  mpegvideo       MPEG video
  E mpjpeg          Mime multipart JPEG format
 DE mulaw           pcm mu law format
 D  nsv             NullSoft Video format
  E null            null video format
 DE nut             nut format
 D  nuv             NuppelVideo format
 D  ogg             Ogg
  E psp             psp mp4 format
 D  psxstr          Sony Playstation STR format
 DE rawvideo        raw video format
 D  redir           Redirector format
 DE rm              rm format
  E rtp             RTP output format
 D  rtsp            RTSP input format
 DE s16be           pcm signed 16 bit big endian format
 DE s16le           pcm signed 16 bit little endian format
 DE s8              pcm signed 8 bit format
 D  sdp             SDP
 D  shn             raw shorten
 D  smk             Smacker Video
 D  sol             Sierra SOL Format
  E svcd            MPEG2 PS format (VOB)
 DE swf             Flash format
 D  tta             true-audio
 DE u16be           pcm unsigned 16 bit big endian format
 DE u16le           pcm unsigned 16 bit little endian format
 DE u8              pcm unsigned 8 bit format
  E vcd             MPEG1 System format (VCD)
 D  vmd             Sierra VMD format
  E vob             MPEG2 PS format (VOB)
 DE voc             Creative Voice File format
 DE wav             wav format
 D  wc3movie        Wing Commander III movie format
 D  wsaud           Westwood Studios audio format
 D  wsvqa           Westwood Studios VQA format
 DE yuv4mpegpipe    YUV4MPEG pipe format

Image formats (filename extensions, if any, follow):
 DE gif    gif

Codecs:
 D V    4xm
 D V D  8bps
 DEA    aac
 D V D  aasc
 DEA    ac3
 DEA    adpcm_4xm
 DEA    adpcm_adx
 DEA    adpcm_ct
 DEA    adpcm_ea
 DEA    adpcm_ima_dk3
 DEA    adpcm_ima_dk4
 DEA    adpcm_ima_qt
 DEA    adpcm_ima_smjpeg
 DEA    adpcm_ima_wav
 DEA    adpcm_ima_ws
 DEA    adpcm_ms
 DEA    adpcm_sbpro_2
 DEA    adpcm_sbpro_3
 DEA    adpcm_sbpro_4
 DEA    adpcm_swf
 DEA    adpcm_xa
 DEA    adpcm_yamaha
 D A    alac
 DEA    amr_nb
 DEA    amr_wb
 DEV D  asv1
 DEV D  asv2
 D V D  avs
 D V    bmp
 D V D  camstudio
 D V D  camtasia
 D V D  cinepak
 D V D  cljr
 D A    cook
 D V D  cyuv
 DES    dvbsub
 DES    dvdsub
 DEV D  dvvideo
 DEV D  ffv1
 DEVSD  ffvhuff
 D A    flac
 D V D  flic
 DEVSD  flv
 D V D  fraps
 DEA    g726
 DEV D  h261
 DEVSDT h263
 D VSD  h263i
  EV    h263p
 DEV DT h264
 DEVSD  huffyuv
 D V D  idcinvideo
 D V D  indeo2
 D V    indeo3
 D A    interplay_dpcm
 D V D  interplayvideo
  EV    jpegls
 D V    kmvc
  EV    ljpeg
 D V D  loco
 D A    mace3
 D A    mace6
 D V D  mdec
 DEV D  mjpeg
 D V D  mjpegb
 D V D  mmvideo
 DEA    mp2
 DEA    mp3
 D A    mp3adu
 D A    mp3on4
 DEVSDT mpeg1video
 DEVSDT mpeg2video
 DEVSDT mpeg4
 D A    mpeg4aac
 D VSDT mpegvideo
 DEVSD  msmpeg4
 DEVSD  msmpeg4v1
 DEVSD  msmpeg4v2
 D V D  msrle
 D V D  msvideo1
 D V D  mszh
 D V D  nuv
 DEV    pam
 DEV    pbm
 DEA    pcm_alaw
 DEA    pcm_mulaw
 DEA    pcm_s16be
 DEA    pcm_s16le
 DEA    pcm_s24be
 DEA    pcm_s24daud
 DEA    pcm_s24le
 DEA    pcm_s32be
 DEA    pcm_s32le
 DEA    pcm_s8
 DEA    pcm_u16be
 DEA    pcm_u16le
 DEA    pcm_u24be
 DEA    pcm_u24le
 DEA    pcm_u32be
 DEA    pcm_u32le
 DEA    pcm_u8
 DEV    pgm
 DEV    pgmyuv
 DEV    png
 DEV    ppm
 D A    qdm2
 D V D  qdraw
 D V D  qpeg
 D V D  qtrle
 DEV    rawvideo
 D A    real_144
 D A    real_288
 D A    roq_dpcm
 D V D  roqvideo
 D V D  rpza
 DEV D  rv10
 DEV D  rv20
 D A    shorten
 D A    smackaud
 D V    smackvid
 D V D  smc
 DEV    snow
 D A    sol_dpcm
 DEA    sonic
  EA    sonicls
 D V D  sp5x
 DEV D  svq1
 D VSD  svq3
 D V    theora
 D V D  truemotion1
 D V D  truemotion2
 D A    truespeech
 D A    tta
 D V D  ultimotion
 D V    vc9
 D V D  vcr1
 D A    vmdaudio
 D V D  vmdvideo
 D A    vorbis
 D V    vp3
 D V D  vqavideo
 D A    wmav1
 D A    wmav2
 DEVSD  wmv1
 DEVSD  wmv2
 D V D  wnv1
 D A    ws_snd1
 D A    xan_dpcm
 D V D  xan_wc3
 D V D  xl
  EV    xvid
 DEV D  zlib
 D V    zmbv

Supported file protocols:
 file: pipe: udp: rtp: tcp: http:
Frame size, frame rate abbreviations:
 ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif
Motion estimation methods:
 zero(fastest) full(slowest) log phods epzs(default) x1 hex umh iter

Note, the names of encoders and decoders dont always match, so there are
several cases where the above table shows encoder only or decoder only entries
even though both encoding and decoding are supported for example, the h263
decoder corresponds to the h263 and h263p encoders, for file formats its even
worse


  



  What is wrong in my code ? Thanks in advance

  


• How to complete your privacy policy with Matomo analytics under GDPR

  25 avril 2018, par InnoCraft

  Important note : this blog post has been written by digital analysts, not lawyers. The purpose of this article is to show you how to complete your existing privacy policy by adding the parts related to Matomo in order to comply with GDPR. This work comes from our interpretation of the UK privacy commission : ICO. It cannot be considered as professional legal advice. So as GDPR, this information is subject to change. We strongly advise you to have a look at the different privacy authorities in order to have up to date information. This blog post contains public sector information licensed under the Open Government Licence v3.0.

  Neither the GDPR official text or ICO are mentioning the words ‘privacy policy’. They use the words ‘privacy notice’ instead. As explained within our previous blog post about “How to write a privacy notice for Matomo”, the key concepts of privacy information are transparency and accessibility which are making the privacy notice very long.

  As a result, we prefer splitting the privacy notice into two parts :

  • Privacy notice : straight to the point information about how personal data is processed at the time of the data collection. This is the subject of the our previous blog post.
  • Privacy policy : a web page explaining in detail all the personal data you are processing and how visitors/users can exercise their rights. This is the blog post you are reading.

  Writing/updating your privacy policy page can be one of the most challenging task under GDPR.

  In order to make this mission less complicated, we have designed a template which you can use to complete the privacy policy part that concerns Matomo.

  Which information should your privacy policy include ?

  ICO is giving a clear checklist about what a privacy policy has to contain when the data is obtained from the data subject :

  1. Identity and contact details of the controller and where applicable, the controller’s representative and the data protection officer.
  2. Purpose of the processing and the legal basis for the processing.
  3. The legitimate interests of the controller or third party, where applicable.
  4. Any recipient or categories of recipients of the personal data.
  5. Details of transfers to third country and safeguards.
  6. Retention period or criteria used to determine the retention period.
  7. The existence of each of data subject’s rights.
  8. The right to withdraw consent at any time, where relevant.
  9. The right to lodge a complaint with a supervisory authority.
  10. Whether the provision of personal data part of a statutory or contractual requirement or obligation and possible consequences of failing to provide the personal data.
  11. The existence of automated decision-making, including profiling and information about how decisions are made, the significance and the consequences.

  So in order to use Matomo with due respect to GDPR you need to answer each of those points within your privacy policy.

  Matomo’s privacy policy template

  You will find below some examples to each point requested by GDPR. Those answers are just guidelines, they are not perfect, feel free to copy/paste them according to your needs.

  Note that this template needs to be tweaked according to the lawful basis you choose.

  1 – About Matomo

  Note : this part should describe the data controller instead, which is your company. But as you may already have included this part within your existing privacy policy, we prefer here to introduce what is Matomo.

  Matomo is an open source web analytics platform. A web analytics platform is used by a website owner in order to measure, collect, analyse and report visitors data for purposes of understanding and optimizing their website. If you would like to see what Matomo looks like, you can access a demo version at : https://demo.matomo.org.

  2 – Purpose of the processing

  Matomo is used to analyse the behaviour of the website visitors to identify potential pitfalls ; not found pages, search engine indexing issues, which contents are the most appreciated… Once the data is processed (number of visitors reaching a not found pages, viewing only one page…), Matomo is generating reports for website owners to take action, for example changing the layout of the pages, publishing some fresh content… etc.

  Matomo is processing the following personal data :

  Pick up the one you are using :

  • Cookies
  • IP address
  • User ID
  • Custom Dimensions
  • Custom Variables
  • Order ID
  • Location of the user

  And also :

  • Date and time
  • Title of the page being viewed
  • URL of the page being viewed
  • URL of the page that was viewed prior to the current page
  • Screen resolution
  • Time in local timezone
  • Files that were clicked and downloaded
  • Link clicks to an outside domain
  • Pages generation time
  • Country, region, city
  • Main Language of the browser
  • User Agent of the browser

  This list can be completed with additional features such as :

  • Session recording, mouse events (movements, content forms and clicks)
  • Form interactions
  • Media interactions
  • A/B Tests

  Pick up one of the two :

  1. The processing of personal data with Matomo is based on legitimate interests, or :
  2. The processing of personal data with Matomo is based on explicit consent. Your privacy is our highest concern. That’s why we will not process any personal data with Matomo unless you give us clear explicit consent.

  3 – The legitimate interests

  This content applies only if you are processing personal data based on legitimate interests. You need here to justify your legitimate interests to process personal data. It is a set of questions described here.

  Processing your personal data such as cookies is helping us identify what is working and what is not on our website. For example, it helps us identify if the way we are communicating is engaging or not and how we can organize the structure of the website better. Our team is benefiting from the processing of your personal data, and they are directly acting on the website. By processing your personal data, you can profit from a website which is getting better and better.

  Without the data, we would not be able to provide you the service we are currently offering to you. Your data will be used only to improve the user experience on our website and help you find the information you are looking for.

  4 – Recipient of the personal data

  The personal data received through Matomo are sent to :

  • Our company.
  • Our web hosting provider : name and contact details of the web hosting provider.

  Note : If you are using the Matomo Analytics Cloud by InnoCraft the web hosting provider is “InnoCraft, 150 Willis St, 6011 Wellington, New Zealand“.

  5 – Details of transfers to third country and safeguards

  Matomo data is hosted in Name of the country.

  If the country mentioned is not within the EU, you need to mention here the appropriate safeguards, for example : our data is hosted in the United States within company XYZ, registered to the Privacy Shield program.

  Note : The Matomo Analytics Cloud by InnoCraft is currently hosted in France. If you are using the cloud-hosted solution of Matomo, use “France” as name of the country.

  6 – Retention period or criteria used to determine the retention period

  We are keeping the personal data captured within Matomo for a period of indicate here the period.

  Justify your choice, for example : as our data is hosted in France, we are applying the French law which defines a retention period of no more than 13 months. You can set the retention period in Matomo by using the following feature.

  7 – The existence of each of the data subject’s rights

  If you are processing personal data with Matomo based on legitimate interest :

  As Matomo is processing personal data on legitimate interests, you can exercise the following rights :

  • Right of access : you can ask us at any time to access your personal data.
  • Right to erasure : you can ask us at any time to delete all the personal data we are processing about you.
  • Right to object : you can object to the tracking of your personal data by using the following opt-out feature :

  Insert here the opt-out feature.

  If you are processing personal data with Matomo based on explicit consent :

  As Matomo is processing personal data on explicit consent, you can exercise the following rights :

  • Right of access : you can ask us at any time to access your personal data.
  • Right to erasure : you can ask us at any time to delete all the personal data we are processing about you.
  • Right to portability : you can ask us at any time for a copy of all the personal data we are processing about you in Matomo.
  • Right to withdraw consent : you can withdraw your consent at any time by clicking on the following button.

  8 – The right to withdraw consent at any time

  If you are processing personal data under the consent lawful basis, you need to include the following section :

  You can withdraw at any time your consent by clicking here (insert here the Matomo tracking code to remove consent).

  9 – The right to lodge a complaint with a supervisory authority

  If you think that the way we process your personal data with Matomo analytics is infringing the law, you have the right to lodge a complaint with a supervisory authority.

  10 – Whether the provision of personal data is part of a statutory or contractual requirement ; or obligation and possible consequences of failing to provide the personal data

  If you wish us to not process any personal data with Matomo, you can opt-out from it at any time. There will be no consequences at all regarding the use of our website.

  11 – The existence of automated decision-making, including profiling and information about how decisions are made, the significance and the consequences

  Matomo is not doing any profiling.

   

  That’s the end of our blog post. We hope you enjoyed reading it and that it will help you get through the GDPR compliance process. If you have any questions dealing with this privacy policy in particular, do not hesitate to contact us.

  The post How to complete your privacy policy with Matomo analytics under GDPR appeared first on Analytics Platform - Matomo.