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• How to use Visual Studio Compiled libs with MSYS pkg-config

  18 août 2017, par maxhap

  First a bit of background.

  I’m trying to compile ffmpeg on windows with the libass extensions/configuration option.

  Using the visual studio project libass-msvc I built libass using Visual Studio as a static lib.

  I then installed MinGW with MSYS and pkg-config. Following the instructions on the ffmpeg MSVC installation guide I configured the environment to build with the MSVC linker and to build in x64.

  When I try to configure libass for compilation using ./configure —enable-libass —toolchain=msvc I get the following error in the log file :

  File not found ass/ass.h
  
  pkg-config can not find libass

  I have tried the following to fix this.

  1. Create a .pc file for libass and add this to the PKG_CONFIG_PATH environment variable. See file content below. (After doing this pkg-config libass —version prints 0.81, not the right version number but at least something.)

  2. Copy libass .h files into a MinGW/include/ass folder and the .lib file into the MinGW/libs folder.

  3. Add libass include and bin folders to PATH environment variable

  4. Download libass and dependencies source then try to build it using MSYS with MSVC compiler. My aim here was to be able to use "make install" and let MinGW install libass to the correct locations. After hours of trying to fix linker errors, I abandoned this idea as some of the libass dependencies make files only work with the GCC GNU compiler.

  5. Compile libass with GCC GNU using MinGW make/make install then try and install libass using the GNU libs. Again this led to linker errors (I know this was a bad idea but was worth a try).

  6. Tried using extra lib and include build configuration options —extra-cflags="ffmpeg-dir/extra/include" \
     — extra-ldflags="ffmped-dir/extra/ffmpeg_build/lib" then adding the libs and .h files into those locations

  .pc file

  libass.pc:
  
  prefix=/MinGW
  
  includedir=libass-directory/include
  
  libdir=libass-director/x64/bin/
  
  
  
  Name: libass
  
  Description: Libass project
  
  Version: 0.13.7

  I am now completely stuck and out of ideas if anyone could give any insight or suggestions into what I’m doing wrong that would be fantastic.

  Thanks in advanced !

• config.h : No such file or directory after importing eclipse ndk project in android studio

  25 mai 2016, par Alin

  I have a working project in eclipse that uses ffmpeg. The implementation is like in this tutorial : http://enoent.fr/blog/2014/06/20/compile-ffmpeg-for-android/

  After importing the project into Android Studio 2.1 the only error I got was related to

  android.useDeprecatedNdk=true in my gradle.properties

  When I try to run the project I get the following error :

   config.h: No such file or directory

  on ffmpeg.h

  #ifndef FFMPEG_H
  
  #define FFMPEG_H
  
  
  
  #include "config.h"
  
  
  
  #include 
  
  #include 
  
  #include 
  
  ....

  My build.gradle has :

  ndk {
  
              moduleName "videokit"
  
          }

  What should I do to fix the problem ?

  LE : Possible solution :
   I created the jniLibs folder and added the .so file from eclipse lib’s folder and it seem to work...

• avcodec/ituh263dec : Make the condition for the studio slice start code match between...

  14 septembre 2019, par Michael Niedermayer

  avcodec/ituh263dec : Make the condition for the studio slice start code match between ff_h263_resync() and ff_mpeg4_decode_studio_slice_header()
  If they mismatch an infinite loop can occur
  
  Fixes : Timeout (infinite loop)
  
  Fixes : 17043/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-5695051748868096
  Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavcodec/ituh263dec.c