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• Changes to the WebM Open Source License

  4 juin 2010, par noreply@blogger.com (John Luther)

  You’ll see on the WebM license page and in our source code repositories that we’ve made a small change to our open source license. There were a couple of issues that popped up after we released WebM at Google I/O a couple weeks ago, specifically around how the patent clause was written.

  As it was originally written, if a patent action was brought against Google, the patent license terminated. This provision itself is not unusual in an OSS license, and similar provisions exist in the 2nd Apache License and in version 3 of the GPL. The twist was that ours terminated "any" rights and not just rights to the patents, which made our license GPLv3 and GPLv2 incompatible. Also, in doing this, we effectively created a potentially new open source copyright license, something we are loath to do.

  Using patent language borrowed from both the Apache and GPLv3 patent clauses, in this new iteration of the patent clause we’ve decoupled patents from copyright, thus preserving the pure BSD nature of the copyright license. This means we are no longer creating a new open source copyright license, and the patent grant can exist on its own. Additionally, we have updated the patent grant language to make it clearer that the grant includes the right to modify the code and give it to others. (We’ve updated the licensing FAQ to reflect these changes as well.)

  We’ve also added a definition for the "this implementation" language, to make that more clear.

  Thanks for your patience as we worked through this, and we hope you like, enjoy and (most importantly) use WebM and join with us in creating more freedom online. We had a lot of help on these changes, so thanks to our friends in open source and free software who traded many emails, often at odd hours, with us.

  Chris DiBona is the Open Source Programs Manager at Google.

  

• Changes to the WebM Open Source License

  5 juin 2010, par noreply@blogger.com (John Luther)

  You’ll see on the WebM license page and in our source code repositories that we’ve made a small change to our open source license. There were a couple of issues that popped up after we released WebM at Google I/O a couple weeks ago, specifically around how the patent clause was written.

  As it was originally written, if a patent action was brought against Google, the patent license terminated. This provision itself is not unusual in an OSS license, and similar provisions exist in the 2nd Apache License and in version 3 of the GPL. The twist was that ours terminated "any" rights and not just rights to the patents, which made our license GPLv3 and GPLv2 incompatible. Also, in doing this, we effectively created a potentially new open source copyright license, something we are loath to do.

  Using patent language borrowed from both the Apache and GPLv3 patent clauses, in this new iteration of the patent clause we’ve decoupled patents from copyright, thus preserving the pure BSD nature of the copyright license. This means we are no longer creating a new open source copyright license, and the patent grant can exist on its own. Additionally, we have updated the patent grant language to make it clearer that the grant includes the right to modify the code and give it to others. (We’ve updated the licensing FAQ to reflect these changes as well.)

  We’ve also added a definition for the "this implementation" language, to make that more clear.

  Thanks for your patience as we worked through this, and we hope you like, enjoy and (most importantly) use WebM and join with us in creating more freedom online. We had a lot of help on these changes, so thanks to our friends in open source and free software who traded many emails, often at odd hours, with us.

  Chris DiBona is the Open Source Programs Manager at Google.

  

• Compiling FFmpeg lib and add it to NDK sources on Windows8

  28 septembre 2014, par Dalvik

  I’ve seen some articles about how to compile and uses FFmpeg for Android.

  Thess are good examplea - example1 and example2

  Unfortunately, non off them, or others I found helped me. In those two examples a build_android.sh is created and configure the FFmpeg’s configuraion file and call to make. Every time when I’m running the script I’m getting the following error :

  c:\android\development\android-ndk-r9\sources\ffmpeg>sh build_android.sh
  
  c:/android/development/android-ndk-r9/toolchains/arm-linux-androideabi-4.8/prebu
  
  ilt/windows-x86_64/arm-linux-androideabi/bin/bin/arm-linux-androideabi-gcc is un
  
  
  
  able 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
  
  solving the problem.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:49: /common.mak: No such file or directory
  
  Makefile:92: /libavutil/Makefile: No such file or directory
  
  Makefile:92: /library.mak: No such file or directory
  
  Makefile:169: /doc/Makefile: No such file or directory
  
  Makefile:170: /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

  If someone encountered and solved this issue it’ll be much appreciated !

  After trying the suggested script I ran into a new problem that I couldn’t solved, this is the output of the script :

  .... Enabled components list....

  In the end of the list I got the following :

  Enabled indevs :
  dv1394 v4l2i
  fbdev

  Enabled outdevs :
  fbdev v4l2

  License : LGPL version 2.1 or later
  Creating config.mak, config.h, and doc/config.texi...

  WARNING : C :/android/development/android-ndk-r9/toolchains/arm-linux-androideabi-
  4.8/prebuilt/windows-x86_64/bin/arm-linux-androideabi-pkg-config not found, libr
  ary detection may fail.
  make : * No rule to make target libavfilter/libavfilter.so', needed byall-ye
  s’. Stop.
  make : * No rule to make target install-libavfilter-shared', needed byinstal
  l-libs-yes’. Stop.