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• Using ffmpeg in asp.net

  23 avril 2014, par pessi

  I needed a audio conversion library. After already pulling my hair..I have given up on the fact that there is no such audio library out there..every library out there has some or the other problem.

  The only option left is ffmpeg which is the best but unfortunately you cannot use it in asp.net (not directly I mean). Every user on the website that will convert a file ; will launch an exe ? ; I think I will hit the server memory max soon.

  Bottom Line : I will try using ffmpeg.exe and see how many users it can support simultaneously.

  I went to the ffmpeg website and in the windows download section I found 3 different version ; static, shared and dev.

  Does any one know which would be the best ? All packed in one exe (static) or dll’s separely and exe small, wrt using it in asp.net ?

  PS : any one has a good library out there..would be great if you can share.

  Static builds provide one self-contained .exe file for each program (ffmpeg, ffprobe, ffplay).

  Shared builds provide each library as a separate .dll file (avcodec, avdevice, avfilter, etc.), and .exe files that depend on those libraries for each program

  Dev packages provide the headers and .lib/.dll.a files required to use the .dll files in other programs.

• ffmpeg stream videos from two cams have a same device name

  21 novembre 2020, par junsang

  There are two cameras have a same device name Microsoft® LifeCam Studio(TM).
  
ffmpeg -list_deivces true -f dshow -i dummy prints the below output.

  



  C:\Users\user>ffmpeg -list_devices true -f dshow -i dummy
ffmpeg version git-2020-02-05-e6891d1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9.2.1 (GCC) 20200122
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 39.100 / 56. 39.100
  libavcodec     58. 67.101 / 58. 67.101
  libavformat    58. 37.100 / 58. 37.100
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 74.100 /  7. 74.100
  libswscale      5.  6.100 /  5.  6.100
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
[dshow @ 000001d5c5108dc0] DirectShow video devices (some may be both video and audio devices)
[dshow @ 000001d5c5108dc0]  "Microsoft┬« LifeCam Studio(TM)"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_pnp_\\?\usb#vid_045e&pid_0811&mi_00#8&6ae46e6&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
[dshow @ 000001d5c5108dc0]  "Microsoft┬« LifeCam Studio(TM)"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_pnp_\\?\usb#vid_045e&pid_0811&mi_00#8&e544916&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global"
[dshow @ 000001d5c5108dc0] DirectShow audio devices
[dshow @ 000001d5c5108dc0]  "Desktop Microphone (6- Microsoft┬« LifeCam Studio(TM))"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{D5F4881A-6E88-4563-8BA0-081CFD50E353}"
[dshow @ 000001d5c5108dc0]  "Desktop Microphone (5- Microsoft┬« LifeCam Studio(TM))"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{84674B28-DC68-4AC0-8331-D687C7B7D69C}"
[dshow @ 000001d5c5108dc0]  "Digital Audio (S/PDIF) (High Definition Audio Device)"
[dshow @ 000001d5c5108dc0]     Alternative name "@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{CDD24485-59D2-4BED-B6FC-B7447251C7E2}"


  



  Because the two cameras have a same device name, I couldn't stream two videos using this simple command at a same time : ffplay -f dshow -i video=Microsoft® LifeCam Studio(TM).
  
So I used pin names following the ffmpeg dshow example.
The only thing I could check was Could not find video device with name [video=~~pin name~~] among source devices of type video.

  



  What ffplay command makes enable to stream both videos ?

  


• Evolution #4754 : Mettre à jeu le jeu des icônes de extensions

  30 avril 2021, par b b

  Amha, SVG partout et zou, et si nécessaire on pourra générer du PNG en masse à partir des SVG.

  Je proposais donc le pack Yaru https://github.com/ubuntu/yaru/tree/master/icons/src/fullcolor/mimetypes (icônes d’Ubuntu) complet, sobre mais il est trop coloré et "en relief" maintenant qu’on est plutôt en mode flat sur le jeu d’icônes du privé, exemples :

  https://github.com/ubuntu/yaru/blob/master/icons/src/fullcolor/mimetypes/text-markdown.svg
  https://github.com/ubuntu/yaru/blob/master/icons/src/fullcolor/mimetypes/x-office-spreadsheet.svg

  Sinon, il y a aussi Papirus & Vimix, et surtout Numix qui est très fourni :

  https://github.com/PapirusDevelopmentTeam/papirus-icon-theme/blob/master/Papirus/64x64/mimetypes/application-pdf.svg
  https://github.com/vinceliuice/vimix-icon-theme/blob/master/src/scalable/mimetypes/application-pdf.svg
  https://github.com/numixproject/numix-icon-theme/blob/master/Numix/64/mimetypes/application-pdf.svg