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• Live encoding with FFmpeg , decklink and pipe [duplicate]

  5 novembre 2016, par SKALIS

  This question already has an answer here :

  • Which pixel format for web mp4 video ?
    
    1 answer
    

  What is the best way to get live video input from a Blackmagic Decklink card and get it encoded with an external encoder (NvEncoder)

  I try :

  mkfifo output.yuv 
  
  ffmpeg  -f decklink  -r 30000/1000 -pix_fmt uyvy422  -i "DeckLink Mini Recorder 4K@24"  output.yuv 
  
  & NvEncoder -i output.yuv -pix_fmt yuv420p -bitrate 21M -fps30 output.ts

  Problem seems that the NvEncoder cannot take the uyvy422 format, so can I change that to yuv420p when capturing and before sending it trough the pipe ?

  The decklink card only can give me uyvy422

• Nomenclature #4519 : Renommage de terminologie (blacklist / whitelist)

  16 juillet 2020, par RastaPopoulos ♥

  Bordel mais faut vraiment répondre à ça ? Tu utilises un réduction par l’absurde, qui ne démontre strictement rien.

  C’est quoi le rapport entre dire qu’une "liste noire" c’est une liste des choses à bannir, et donc assimiler de manière totalement culturelle, subjective et non-universelle ce qui est noir à ce qui est mal et à bannir (ça ne vaut que dans certaines cultures), avec le fait de décrire factuellement quelque chose de noir (la nuit noire, la chaussure noire, etc) ? RIEN. Aucun fucking rapport.

  Par ailleurs c’est quoi que tu as peur de ne plus pouvoir dire ? Ça t’interdit quoi dans ta vie de faire ça ? Tu te sens trop oppressé de changer ces mots ? En tant que personne blanche sans aucun problème en rapport avec ce sujet, ça t’empêche de formuler quoi comme pensée ?

  Toujours du côté du bâton, dès qu’il y a un mini changement culturel possible à faire à notre modeste échelle…

• ffmpeg for Android build shows error

  2 avril 2015, par Jamal

  I would like to build ffmpeg for Android so I am following a steps from this tutorial http://www.roman10.net/how-to-build-ffmpeg-with-ndk-r9/

  What I tried

  1. downloaded android-ndk-r10d-darwin-x86_64.bin for Mac 64 bit OS
  2. decompressed/extract the NDK archieve file
  3. downloaded ffmpeg 2.6.1
  4. decompressed/extract the `ffmpeg 2.6.1 file
  5. copied the ffmpeg 2.6.1 extracted folder and pasted into android-ndk-r10d/sources/ location

  6. Opened the ffmpeg-2.6.1/configure file and replaced this code

     SLIBNAME_WITH_MAJOR=’$(SLIBNAME).$(LIBMAJOR)’
     LIB_INSTALL_EXTRA_CMD=’$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"’
     SLIB_INSTALL_NAME=’$(SLIBNAME_WITH_VERSION)’
     SLIB_INSTALL_LINKS=’$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)’

  with

  SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
  
  LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
  
  SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
  
  SLIB_INSTALL_LINKS='$(SLIBNAME)'

  7.Created the build_android.shfile inside ffmpeg-2.6.1 folder so now it be like this ffmpeg-2.6.1/build_android.sh.
  instead of this NDK=$HOME/Desktop/adt/android-ndk-r9 line I set current NDK location
  8. executed this sudo chmod +x build_android.sh command

  9. while executing this command ./build_android.sh got below error

  Hubs-Mac-mini:ffmpeg-2.6.1 hubmaci7$ ./build_android.sh
  Configured with : —prefix=/Applications/Xcode.app/Contents/Developer/usr —with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/c++/4.2.1
  Configured with : —prefix=/Applications/Xcode.app/Contents/Developer/usr —with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/c++/4.2.1
  /hubmaci7/Pictures/Hubino/Jamal/android-ndk-r10d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc is unable to create an executable file.
  C compiler test failed.

  If you think configure made a mistake, make sure you are using the latest
  
  version from Git.  If the latest version fails, report the problem to the
  
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  
  Include the log file "config.log" produced by configure as this will help
  
  solve the problem.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:59: /common.mak: No such file or directory
  
  Makefile:100: /libavutil/Makefile: No such file or directory
  
  Makefile:100: /library.mak: No such file or directory
  
  Makefile:102: /doc/Makefile: No such file or directory
  
  Makefile:185: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:59: /common.mak: No such file or directory
  
  Makefile:100: /libavutil/Makefile: No such file or directory
  
  Makefile:100: /library.mak: No such file or directory
  
  Makefile:102: /doc/Makefile: No such file or directory
  
  Makefile:185: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:59: /common.mak: No such file or directory
  
  Makefile:100: /libavutil/Makefile: No such file or directory
  
  Makefile:100: /library.mak: No such file or directory
  
  Makefile:102: /doc/Makefile: No such file or directory
  
  Makefile:185: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Hubs-Mac-mini:ffmpeg-2.6.1 hubmaci7$ 

  please provide a needed solution for me to solve this errors