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• Compiling x264 on a Mac : "No working C compiler found" and "arm-linux-androideabi-gcc : command not found"

  29 novembre 2014, par Xavi Gil

  I am trying to compile the x264 library for Android, following this post.

  I have cloned the x264 project git clone git://git.videolan.org/x264.git and tried to compile with the following configuration :

  NDK=~/development/android-ndk-r10c    
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64
  
  PLATFORM=$NDK/platforms/android-21/arch-arm
  
  
  
  ./configure \
  
  --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
  --sysroot=$PLATFORM \
  
  --host=arm-linux \
  
  --enable-pic \
  
  --enable-static \
  
  --disable-cli

  The problem is that I get a No working C compiler found. error.

  The conftest.log output :

  $ cat conftest.log 
  
  ./configure: line 153: arm-linux-androideabi-gcc: command not found

  But the arm-linux-androideabi-gcc is the toolchain’s bin folder !!

  Looking at this other question it looks like for some reason, even though the file exists, since it is a 64bit Mac, it won’t execute the arm-linux-androideabi-gcc file and will return this weird error and log.

  ---

  I am in a Mac OS X 10.10 and I have installed the XCode Command Line Tools :

  $ xcode-select -p
  
  /Applications/Xcode.app/Contents/Developer

  GCC version :

  $ gcc --version
  
  Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
  
  Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)
  
  Target: x86_64-apple-darwin14.0.0
  
  Thread model: posix

  ---

  Can anyone tell me how to fix this please ?

• avcodec/libopenh264enc : set iEntropyCodingModeFlag by coder option

  14 janvier 2022, par Limin Wang

  avcodec/libopenh264enc : set iEntropyCodingModeFlag by coder option
  For high/main profile, user can choose to use cavlc by specify "-coder cavlc",
  
  for default, it'll will use cabac, if it's baseline, we'll use cavlc by specs anyway.
  ffmpeg -y -f lavfi -i testsrc -c:v libopenh264 -profile:v main -coder cavlc -frames:v 1 -bsf trace_headers -f null -
  
  before the patch :
  
  entropy_coding_mode_flag                                    0 = 1
  after the patch :
  
  entropy_coding_mode_flag                                    0 = 0
  Reviewed-by : Martin Storsjö <martin@martin.st>
  
  Signed-off-by : Limin Wang <lance.lmwang@gmail.com>
  

  • [DH] libavcodec/libopenh264enc.c

• Combine Two Video using Go - FFmpeg

  11 mai 2017, par JosephCenk

  I have two videos, Video A && Video B. I want to combine both video to a new Video C using golang. I tried FFmpeg but unable to cross compile it for ARM devices and getting error message.
  /usr/local/ffmpeg/lib/libavdevice.so : file not recognized : File format not recognized collect2 : error : ld returned 1 exit status

  Please advise.
  Opening two media player at once is not an option. With amd64 I compile without having any issue.