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• Today we celebrate Data Privacy Day 2019

  28 janvier 2019, par Jake Thornton — Privacy
  Today we celebrate Data Privacy Day 2019 !!!

  What is Data Privacy Day ?

  Wikipedia tells us that : The purpose of Data Privacy Day is to raise awareness and promote privacy and data protection best practices.

  Our personal data is our online identity. When you think what personal data means – our phone records, credit card transactions, GPS position, IP addresses, browsing history and so much more. All so valuable and personal to us as human beings.

  That’s why we cannot take our personal data online for granted. We have a right to know which websites collect our data and how it’s then used, something that’s often not visible or easily recognisable when browsing.

  What Data Privacy Day means to Matomo

  Every year the team at Matomo uses this day as a chance to reflect on how far the Matomo (formerly Piwik) project has come. But then also reflect how far we still have to go in spreading the message that our data and personal information online matters.

  2018 saw the introduction of the EU General Data Protection Regulation (GDPR) to protect people’s data online. As a team, Matomo was at the forefront of this development in the analytics space and have since built a GDPR Manager to ensure our users can be fully compliant with the GDPR.

  With every new release of Matomo, we are ensuring that security continues to be at the highest standard and we will continue to be committed to our bug bounty program. Our most recent release of Matomo 3.8.0 alone added a Two Factor Authentication (2FA) feature and a password brute force prevention.

  What next for Matomo and data privacy ?

  As always, security is a top priority for every new release of Matomo and continues to only get better and better. We have a duty to spread our message further that the protection of personal data matters and today is a vital reminder of that. We are, and forever will be, the #1 open-source (and free to use) web analytics platform in the world that fully respects user privacy and gives our users 100% data ownership.

  In 2018 we changed our name, we updated our logo and website, and advanced our platform to compete with the most powerful web analytics tools in the world, all so we can spread our message further and continue our mission.

  Come with us on this exciting journey. Now is the time to take back control of your data and let’s continue creating a safer web for everyone.

  Please help us spread this message.

• What the "No opaque field provided" mean in ffmpeg ?

  15 mai 2016, par 纯洁的坏蛋

  I use the code to covert a image and wav to a mp4 :

  ffmpeg -loop 1 -i img.jpg -i audio.wav -c:v libx264 -c:a aac -strict experimental -b:a 192k -shortest out.mp4

  But I got some errors :

   05-09 17:00:23.473 26907-27514/com.tian.example E/xx: ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  
  05-09 17:00:23.473 26907-27514/com.tian.example E/xx:   built on May  9 2016 16:36:21 with gcc 4.9 20150123 (prerelease)
  
  05-09 17:00:23.473 26907-27514/com.tian.example E/xx:   configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/Users/tian/Documents/adt/android-ndk-r9c/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi- --sysroot=/Users/tian/Documents/adt/android-ndk-r9c/platforms/android-16/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon -fPIE -pie' --extra-ldflags='-L../x264 -fPIE -pie' --enable-version3 --enable-gpl --disable-doc --enable-yasm --disable-decoders --enable-decoder=mjpeg --enable-decoder=aac --enable-decoder=h264 --disable-encoders --enable-encoder=libx264 --enable-encoder=aac --enable-encoder=h264 --enable-muxers --disable-demuxers --enable-demuxer=image2 --enable-demuxer=wav --disable-parsers --disable-protocols --enable-protocol=file --disable-filters --disable-avresample --disable-libfreetype --disable-indevs --disable-indev=lavfi --disable-outdevs --enable-  libavutil      51. 54.100 / 51. 54.100
  
  05-09 17:00:23.473 26907-27514/com.tian.example E/xx:   libavcodec     54. 23.100 / 54. 23.100
  
  05-09 17:00:23.473 26907-27514/com.tian.example E/xx:   libavformat    54.  6.100 / 54.  6.100
  
  05-09 17:00:23.473 26907-27514/com.tian.example E/xx:   libavdevice    54.  0.100 / 54.  0.100
  
  05-09 17:00:23.473 26907-27514/com.tian.example E/xx:   libavfilter     2. 77.100 /  2. 77.100
  
  05-09 17:00:23.473 26907-27514/com.tian.example E/xx:   libswscale      2.  1.100 /  2.  1.100
  
  
  
  05-09 17:00:23.473 26907-27514/com.tian.example E/xx:   libswresample   0. 15.100 /  0. 15.100
  
  05-09 17:00:23.473 26907-27514/com.tian.example E/xx:   libpostproc    52.  0.100 / 52.  0.100
  
  05-09 17:00:23.553 26907-27514/com.tian.example E/xx: [image2 @ 0xb6042100] max_analyze_duration 5000000 reached at 5000000
  
  05-09 17:00:23.553 26907-27514/com.tian.example E/xx: Input #0, image2, from '/storage/emulated/0/Android/data/com.tian.example/files/tian/frame.jpg':
  
  05-09 17:00:23.553 26907-27514/com.tian.example E/xx:   Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
  05-09 17:00:23.553 26907-27514/com.tian.example E/xx:     Stream #0:0: Video: mjpeg, yuvj420p, 320x240 [SAR 72:72 DAR 4:3], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  05-09 17:00:23.573 26907-27514/com.tian.example E/xx: Guessed Channel Layout for  Input Stream #1.0 : mono
  
  05-09 17:00:23.573 26907-27514/com.tian.example E/xx: Input #1, wav, from '/storage/emulated/0/Android/data/com.tian.example/files/tian/example/回声_2016_05_07_22_23_20.wav':
  
  
  
  05-09 17:00:23.573 26907-27514/com.tian.example E/xx:   Duration: 00:00:02.65, bitrate: 705 kb/s
  
  05-09 17:00:23.573 26907-27514/com.tian.example E/xx:     Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, mono, 705 kb/s
  
  05-09 17:00:23.593 26907-27514/com.tian.example E/xx: [buffer @ 0xb6052070] w:320 h:240 pixfmt:yuvj420p tb:1/25 sar:72/72 sws_param:flags=2
  
  05-09 17:00:23.593 26907-27514/com.tian.example E/xx: [buffersink @ 0xb60520a0] No opaque field provided
  
  
  
  05-09 17:00:23.593 26907-27514/com.tian.example E/xx: [abuffer @ 0xb6052100] Invalid sample format (null).
  
  05-09 17:00:23.593 26907-27514/com.tian.example E/xx: Error opening filters!

  I am a new for ffmpeg.

• How to fix ffmpeg complex filters "Invalid stream specifier" [duplicate]

  15 mai 2019, par Chase

  This question already has an answer here :

  • FFmpeg filter_complex concat gives only first input on crop
    
    1 answer
    
  • Problems building Image slideshow with sliding transition using ffmpeg
    
    1 answer
    
  • ffmpeg : chain of multiple filter_complex, re-using intermediate output stream
    
    1 answer
    

  I’m attempting to scale and blur (sections of) a video with ffmpeg complex filters. This has actually been working in production for years.

  I’m now running a newer build of ffmpeg on Ubuntu 18.04 and getting an error relating to the filters where the same command works fine on Ubuntu 16.04’s ffmpeg against the same video.

  
  Specifically, I’m seeing the following error :

  mov,mp4,m4a,3gp,3g2,mj2 @ 0x56055a5902c0] Invalid stream specifier: vs0.
  
      Last message repeated 1 times
  
  Stream specifier 'vs0' in filtergraph description ... matches no streams.

  Has something about the complex filter API changed that would make this same input invalid in a newer version of ffmpeg ?

  ---

  The command in question is just running the following in a Bash terminal.

  ffmpeg -ss 60 -i ~/test.mp4 -y -filter_complex "[0:v]scale=-2:'min(320,ih)'[vs0];[vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];[vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];[vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];[vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];[ovr1][b2]overlay=main_w/9:0[vs1]" -map [vs1] -an -ac 2 -b:a 128k -acodec aac -b:v 1024k -r 30 -vcodec libx264 -t 300 -y -preset slow -movflags faststart -pix_fmt yuv420p -f mp4 ~/out.mp4

  If we break up the complex filter statement, it looks like :

  [0:v]scale=-2:'min(320,ih)'[vs0];
  
  [vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];
  
  [vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];
  
  [vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];
  
  [vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];
  
  [ovr1][b2]overlay=main_w/9:0[vs1]

  ---

  On ffmpeg version N-86980-g62b7553 (Ubuntu 16.04), everything works great as it has done for years.

  $ ffmpeg -ss 60 -i ~/test.mp4 -y -filter_complex "[0:v]scale=-2:'min(320,ih)'[vs0];[vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];[vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];[vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];[vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];[ovr1][b2]overlay=main_w/9:0[vs1]" -map [vs1] -an -ac 2 -b:a 128k -acodec aac -b:v 1024k -r 30 -vcodec libx264 -t 300 -y -preset slow -movflags faststart -pix_fmt yuv420p -f mp4 ~/out.mp4
  
  ffmpeg version N-86980-g62b7553 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
  
    configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-openssl --enable-nonfree
  
    libavutil      55. 73.100 / 55. 73.100
  
    libavcodec     57.102.100 / 57.102.100
  
    libavformat    57. 76.100 / 57. 76.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 98.100 /  6. 98.100
  
    libswscale      4.  7.102 /  4.  7.102
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/cmaier/test.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
    Duration: 00:10:00.00, start: 0.000000, bitrate: 1036 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 768x480, 1033 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
  Stream mapping:
  
    Stream #0:0 (h264) -> scale
  
    Stream #0:0 (h264) -> crop
  
    Stream #0:0 (h264) -> crop
  
    Stream #0:0 (h264) -> overlay:main
  
    overlay -> Stream #0:0 (libx264)
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x27b2ca0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x27b2ca0] profile High, level 3.1
  
  [libx264 @ 0x27b2ca0] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=5 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=8 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=50 rc=abr mbtree=1 bitrate=1024 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to '/home/cmaier/out.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 768x480, q=-1--1, 1024 kb/s, 30 fps, 15360 tbn, 30 tbc (default)
  
      Metadata:
  
        encoder         : Lavc57.102.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/1024000 buffer size: 0 vbv_delay: -1
  
  [mp4 @ 0x27b5a60] Starting second pass: moving the moov atom to the beginning of the file3.9x    
  
  frame= 9000 fps=117 q=-1.0 Lsize=   37827kB time=00:04:59.90 bitrate=1033.3kbits/s speed= 3.9x    
  
  video:37721kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.282333%
  
  [libx264 @ 0x27b2ca0] frame I:36    Avg QP:15.21  size: 50944
  
  [libx264 @ 0x27b2ca0] frame P:2723  Avg QP:20.12  size:  9593
  
  [libx264 @ 0x27b2ca0] frame B:6241  Avg QP:24.23  size:  1710
  
  [libx264 @ 0x27b2ca0] consecutive B-frames:  3.6%  6.9% 14.5% 75.0%
  
  [libx264 @ 0x27b2ca0] mb I  I16..4: 17.3% 58.5% 24.2%
  
  [libx264 @ 0x27b2ca0] mb P  I16..4:  0.5%  4.4%  0.9%  P16..4: 31.1% 20.7% 12.1%  0.0%  0.0%    skip:30.3%
  
  [libx264 @ 0x27b2ca0] mb B  I16..4:  0.0%  0.3%  0.1%  B16..8: 28.9%  5.5%  1.1%  direct: 1.1%  skip:63.1%  L0:37.5% L1:52.6% BI: 9.9%
  
  [libx264 @ 0x27b2ca0] final ratefactor: 19.69
  
  [libx264 @ 0x27b2ca0] 8x8 transform intra:72.8% inter:68.3%
  
  [libx264 @ 0x27b2ca0] direct mvs  spatial:99.9% temporal:0.1%
  
  [libx264 @ 0x27b2ca0] coded y,uvDC,uvAC intra: 74.5% 73.0% 30.4% inter: 13.0% 10.7% 0.2%
  
  [libx264 @ 0x27b2ca0] i16 v,h,dc,p: 49% 30%  3% 17%
  
  [libx264 @ 0x27b2ca0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  7% 14% 11%  7% 11%  8% 19%  8% 15%
  
  [libx264 @ 0x27b2ca0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu:  9% 13%  5%  8% 14% 10% 17%  9% 16%
  
  [libx264 @ 0x27b2ca0] i8c dc,h,v,p: 42% 29% 15% 15%
  
  [libx264 @ 0x27b2ca0] Weighted P-Frames: Y:7.4% UV:2.9%
  
  [libx264 @ 0x27b2ca0] ref P L0: 59.2% 20.2% 11.5%  3.7%  4.3%  1.0%  0.1%
  
  [libx264 @ 0x27b2ca0] ref B L0: 87.5%  8.8%  2.7%  1.0%
  
  [libx264 @ 0x27b2ca0] ref B L1: 96.5%  3.5%
  
  [libx264 @ 0x27b2ca0] kb/s:1030.01

  ---

  On ffmpeg version N-93862-gf49cec2 (Ubuntu 18.04), the command fails immediately.

  # ffmpeg -ss 60 -i ~/test.mp4 -y -filter_complex "[0:v]scale=-2:'min(320,ih)'[vs0];[vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];[vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];[vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];[vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];[ovr1][b2]overlay=main_w/9:0[vs1]" -map [vs1] -an -ac 2 -b:a 128k -acodec aac -b:v 1024k -r 30 -vcodec libx264 -t 300 -y -preset slow -movflags faststart -pix_fmt yuv420p -f mp4 ~/out.mp4
  
  ffmpeg version N-93862-gf49cec2 Copyright (c) 2000-2019 the FFmpeg developers
  
    built with gcc 7 (Ubuntu 7.4.0-1ubuntu1~18.04)
  
    configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-openssl --enable-nonfree
  
    libavutil      56. 27.100 / 56. 27.100
  
    libavcodec     58. 52.101 / 58. 52.101
  
    libavformat    58. 27.103 / 58. 27.103
  
    libavdevice    58.  7.100 / 58.  7.100
  
    libavfilter     7. 53.100 /  7. 53.100
  
    libswscale      5.  4.101 /  5.  4.101
  
    libswresample   3.  4.100 /  3.  4.100
  
    libpostproc    55.  4.100 / 55.  4.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/root/test.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf57.76.100
  
    Duration: 00:10:00.00, start: 0.000000, bitrate: 1036 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 768x480, 1033 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x56055a5902c0] Invalid stream specifier: vs0.
  
      Last message repeated 1 times
  
  Stream specifier 'vs0' in filtergraph description [0:v]scale=-2:'min(320,ih)'[vs0];[vs0]crop=in_w/9:in_h/2:0:0,boxblur=5:1:cr=3:ar=3[b0];[vs0]crop=in_w/9:in_h/2:in_w-out_w:0,boxblur=5:1:cr=3:ar=3[b1];[vs0]crop=(in_w-2*in_w/9):in_h/20:in_w/9:0,boxblur=5:1:cr=3:ar=3[b2];[vs0][b0]overlay=0:0[ovr0];[ovr0][b1]overlay=main_w-overlay_w:0[ovr1];[ovr1][b2]overlay=main_w/9:0[vs1] matches no streams.