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• Sites qui peuvent inspirer

  26 septembre 2013

  Pour des nouveaux thèmes, voir pour faire évoluer le squelette, il est toujours intéressant de regarder les sites qui font pareil. Ici, deux liens vers des catalogues OpenData

  Liens de severo :

  • généraliste : http://demo.ckan.org/ ;
  • données spatiales : http://beta.dev.geonode.org/ ;
  • http://www.documentcloud.org/public/search/

  Liens de kent1 :

  • Site de tutoriaux vidéos : https://tutsplus.com
  • Un thème wordpress utilisé notamment ici ;
  • Autre thème wordpress utilisé ici ;

• Can't install new packages in ubuntu

  7 juin 2023, par Robbie Mallett

  I would like to install ffmpeg. My normal procedure to install this package would be :

  


  sudo apt update
sudo apt install ffmpeg


  


  However when I run sudo apt update I get some errors including :

  


    The following signatures were invalid: EXPKEYSIG 277A7293F59E4889 MiKTeX Packager <packager@miktex.org>
Reading package lists... Done
E: The repository 'http://security.ubuntu.com/ubuntu impish-security Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://gb.archive.ubuntu.com/ubuntu impish Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://repository.spotify.com stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7A3A762FAFD4A51F
E: The repository 'http://gb.archive.ubuntu.com/ubuntu impish-updates Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository 'http://gb.archive.ubuntu.com/ubuntu impish-backports Release' does not have a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://ctan.dcc.uchile.cl/systems/win32/miktex/setup/deb focal InRelease: The following signatures were invalid: EXPKEYSIG 277A7293F59E4889 MiKTeX Packager <packager@miktex.org>


  


  And then when I run sudo apt install ffmpeg and selecting Y to some options, I get :

  


  (base) robbie@ro-rmallett-l1:~$ sudo apt install ffmpeg
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following package was automatically installed and is no longer required:
  libfwupdplugin1
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
  libavdevice58 libdc1394-25 libopenal-data libopenal1 libsdl2-2.0-0
Suggested packages:
  ffmpeg-doc libportaudio2
The following NEW packages will be installed
  ffmpeg libavdevice58 libdc1394-25 libopenal-data libopenal1 libsdl2-2.0-0
0 to upgrade, 6 to newly install, 0 to remove and 19 not to upgrade.
Need to get 3,046 kB of archives.
After this operation, 5,642 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
WARNING: The following packages cannot be authenticated!
  libdc1394-25 libopenal-data libopenal1 libsdl2-2.0-0 libavdevice58 ffmpeg
Install these packages without verification? [y/N] Y
Err:1 http://gb.archive.ubuntu.com/ubuntu impish/universe amd64 libdc1394-25 amd64 2.2.6-3
  404  Not Found [IP: 185.125.190.36 80]
Ign:2 http://gb.archive.ubuntu.com/ubuntu impish/universe amd64 libopenal-data all 1:1.19.1-2
Err:3 http://gb.archive.ubuntu.com/ubuntu impish/universe amd64 libopenal1 amd64 1:1.19.1-2
  404  Not Found [IP: 185.125.190.36 80]
Ign:4 http://gb.archive.ubuntu.com/ubuntu impish-updates/main amd64 libsdl2-2.0-0 amd64 2.0.14+dfsg2-3ubuntu0.1
Ign:5 http://gb.archive.ubuntu.com/ubuntu impish-updates/universe amd64 libavdevice58 amd64 7:4.4.2-0ubuntu0.21.10.1
Ign:6 http://gb.archive.ubuntu.com/ubuntu impish-updates/universe amd64 ffmpeg amd64 7:4.4.2-0ubuntu0.21.10.1
Err:2 http://gb.archive.ubuntu.com/ubuntu impish/universe amd64 libopenal-data all 1:1.19.1-2
  404  Not Found [IP: 185.125.190.36 80]
Err:4 http://security.ubuntu.com/ubuntu impish-updates/main amd64 libsdl2-2.0-0 amd64 2.0.14+dfsg2-3ubuntu0.1
  404  Not Found [IP: 185.125.190.36 80]
Err:5 http://security.ubuntu.com/ubuntu impish-updates/universe amd64 libavdevice58 amd64 7:4.4.2-0ubuntu0.21.10.1
  404  Not Found [IP: 185.125.190.36 80]
Err:6 http://security.ubuntu.com/ubuntu impish-updates/universe amd64 ffmpeg amd64 7:4.4.2-0ubuntu0.21.10.1
  404  Not Found [IP: 185.125.190.36 80]
E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/pool/universe/libd/libdc1394/libdc1394-25_2.2.6-3_amd64.deb  404  Not Found [IP: 185.125.190.36 80]
E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/pool/universe/o/openal-soft/libopenal-data_1.19.1-2_all.deb  404  Not Found [IP: 185.125.190.36 80]
E: Failed to fetch http://gb.archive.ubuntu.com/ubuntu/pool/universe/o/openal-soft/libopenal1_1.19.1-2_amd64.deb  404  Not Found [IP: 185.125.190.36 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/libs/libsdl2/libsdl2-2.0-0_2.0.14%2bdfsg2-3ubuntu0.1_amd64.deb  404  Not Found [IP: 185.125.190.36 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/universe/f/ffmpeg/libavdevice58_4.4.2-0ubuntu0.21.10.1_amd64.deb  404  Not Found [IP: 185.125.190.36 80]
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/universe/f/ffmpeg/ffmpeg_4.4.2-0ubuntu0.21.10.1_amd64.deb  404  Not Found [IP: 185.125.190.36 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?


  


  When I use --fix-missing after either call it doesn't help. To be honest I can't understand the error messages. I'm running Ubuntu 21.10. What should I do ? I can't seem to install any new packages with apt-get.

  


• With ffmpeg, trying to change a container from Mpeg TS to MP4, fps became twice of Mpeg TS

  17 juillet 2016, par user2148481

  I got a Mpeg TS file from a capture board to make a DEMO video clip.

  Here is information of the file from ffmpeg ;

  Stream #0:0[0x51]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
  
  Stream #0:1[0x61]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 224 kb/s

  However, I cannot edit it in FCP X, so I tried to change just its container TS to MP4 with ffmpeg using the below command.

  ffmpeg -i input.ts -vcodec copy -acodec copy output.mp4

  After doing it, fps of output.mp4 became 59.94 fps and information is like below ;

  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 1750 kb/s, 59.94 fps, 59.94 tbr, 90k tbn, 59.94 tbc
  
  Stream #0:1(und): Audio: mp2 (mp4a / 0x6134706D), 48000 Hz, stereo, s16p, 224 kb/s

  Fps is not same.

  Is there a way to keep same fps as TS with just copy option to change a container ?

  I am wondering whether just re-encoding is solution or not.

  /////

  Full logs ;

  $ ffmpeg -i input.ts -vcodec copy -acodec copy output.mp4
  
  ffmpeg version 1.1.2 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Feb  6 2013 10:45:57 with Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM 3.1svn)
  
    configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libspeex --enable-libfreetype --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
  
    libavutil      52. 13.100 / 52. 13.100
  
    libavcodec     54. 86.100 / 54. 86.100
  
    libavformat    54. 59.106 / 54. 59.106
  
    libavdevice    54.  3.102 / 54.  3.102
  
    libavfilter     3. 32.100 /  3. 32.100
  
    libswscale      2.  1.103 /  2.  1.103
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  [mpegts @ 0x7f8a2b033000] max_analyze_duration 5000000 reached at 5003333
  
  Input #0, mpegts, from 'input.ts':
  
    Duration: 00:05:01.27, start: 0.224400, bitrate: 2727 kb/s
  
    Program 1 
  
      Stream #0:0[0x51]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
  
      Stream #0:1[0x61]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 224 kb/s
  
  Output #0, mp4, to 'output.mp4':
  
    Metadata:
  
      encoder         : Lavf54.59.106
  
      Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 29.97 fps, 90k tbn, 90k tbc
  
      Stream #0:1: Audio: mp2 (i[0][0][0] / 0x0069), 48000 Hz, stereo, 224 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  [mp4 @ 0x7f8a2b058200] pts has no value
  
  frame=13472 fps=0.0 q=-1.0 size=   54536kB time=00:03:44.80 bitrate=1987.3kbits/frame=18056 fps=0.0 q=-1.0 Lsize=   73024kB time=00:05:01.28 bitrate=1985.5kbits/s    
  
  video:64370kB audio:8212kB subtitle:0 global headers:0kB muxing overhead 0.608498%