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• FFMPEG not able to trim some videos

  2 août 2015, par Bhuvnesh Varma

  I am using hiteshsondhi88/ffmpeg-android library to time or cut videos.It works fine for most videos but for some of the videos it fails and give below error especially for videos shared from whatsapp.I am using Environment.getExternalStoragePublicDirectory(
  Environment.DIRECTORY_MOVIES
  ) for storage of videos.Whats does this error means and why i am not able to crop/trim some videos ?

  FAILED with output : WARNING: linker: /data/data/com.peoplecloudlabs.apps.guggu/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
  
      ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
  
      built on Oct  7 2014 15:11:41 with gcc 4.8 (GCC)
  
      configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/i686-linux-android- --arch=x86 --cpu=i686 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/x86 --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -march=i686' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
      libavutil      54.  7.100 / 54.  7.100
  
      libavcodec     56.  1.100 / 56.  1.100
  
      libavformat    56.  4.101 / 56.  4.101
  
      libavdevice    56.  0.100 / 56.  0.100
  
      libavfilter     5.  1.100 /  5.  1.100
  
      libswscale      3.  0.100 /  3.  0.100
  
      libswresample   1.  1.100 /  1.  1.100
  
      libpostproc    53.  0.100 / 53.  0.100
  
      /storage/emulated/0/1: No such file or directory

• How to compile ffmpeg to support hw codec ?

  23 juillet 2015, par Kame Li

  I modified the build_libstagefright.sh to compile ffmpeg-2.7.1, and I got following libraries. But I can not load them successfully.
  ./ffmpeg-2.7.1/libswresample/libswresample.so
  ./ffmpeg-2.7.1/libavfilter/libavfilter.so
  ./ffmpeg-2.7.1/libavcodec/libavcodec.so
  ./ffmpeg-2.7.1/libswscale/libswscale.so
  ./ffmpeg-2.7.1/libavformat/libavformat.so
  ./ffmpeg-2.7.1/libavutil/libavutil.so`

  Detail of build_libstagefright.sh is as bellow. Can anyone help to take a look what happen ? If you already compiled the libs to support hw codec, can you share them for me ? Thanks so much.
  -------------------------------------------------------------------------------
  # !/bin/bash

  #NDK=/home/ming/Tools/android-ndk-r9d
  
  NDK=/home/ming/Tools/android-ndk-r10e
  
  SYSROOT=$NDK/platforms/android-19/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64
  
  
  
  if [ "$NDK" = "" ]; then
  
      echo NDK variable not set, assuming ${HOME}/android-ndk
  
      export NDK=${HOME}/android-ndk
  
  fi
  
  
  
  echo "Fetching Android system headers"
  
  git clone --depth=1 --branch gingerbread-release                             git://github.com/CyanogenMod/android_frameworks_base.git ../android-    source/frameworks/base
  
  git clone --depth=1 --branch gingerbread-release     git://github.com/CyanogenMod/android_system_core.git ../android-   source/system/core
  
  
  
  echo "Fetching Android libraries for linking"
  
  # Libraries from any froyo/gingerbread device/emulator should work
  
  # fine, since the symbols used should be available on most of them.
  
  if [ ! -d "../android-libs" ]; then
  
      if [ ! -f "../update-cm-7.0.3-N1-signed.zip" ]; then
  
          wget http://download.cyanogenmod.com/get/update-cm-7.0.3-N1-signed.zip -P../
  
      fi
  
      unzip ../update-cm-7.0.3-N1-signed.zip system/lib/* -d../
  
      mv ../system/lib ../android-libs
  
      rmdir ../system
  
  fi
  
  
  
  SYSROOT=$NDK/platforms/android-19/arch-arm
  
  # Expand the prebuilt/* path into the correct one
  
  #TOOLCHAIN=`echo $NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt/*-x86`
  
  export PATH=$TOOLCHAIN/bin:$PATH
  
  ANDROID_SOURCE=../android-source
  
  ANDROID_LIBS=../android-libs
  
  ABI="armeabi-v7a"
  
  ADDI_CFLAGS="-marm"
  
  
  
  rm -rf ../build/stagefright
  
  mkdir -p ../build/stagefright
  
  
  
  DEST=../build/stagefright
  
  # --cpu=armv7-a
  
  FLAGS="--target-os=linux --cross-prefix=arm-linux-androideabi- --arch=arm --                        enable-shared --disable-static --disable-doc --disable-ffserver --enable-cross-    compile --cpu=armv7-a"
  
  FLAGS="$FLAGS --sysroot=$SYSROOT"
  
  FLAGS="$FLAGS --disable-avdevice --disable-decoder=h264 --disable-    decoder=h264_vdpau --enable-libstagefright-h264"
  
  
  
  EXTRA_CFLAGS="-I$ANDROID_SOURCE/frameworks/base/include -    I$ANDROID_SOURCE/system/core/include"
  
  EXTRA_CFLAGS="$EXTRA_CFLAGS -    I$ANDROID_SOURCE/frameworks/base/media/libstagefright"
  
  EXTRA_CFLAGS="$EXTRA_CFLAGS -    I$ANDROID_SOURCE/frameworks/base/include/media/stagefright/openmax"
  
  #EXTRA_CFLAGS="$EXTRA_CFLAGS -I$NDK/sources/cxx-stl/gnu-libstdc++/include -    I$NDK/sources/cxx-stl/gnu-libstdc++/libs/$ABI/include"
  
  EXTRA_CFLAGS="$EXTRA_CFLAGS -I$NDK/sources/cxx-stl/gnu-libstdc++/4.8/include -I$NDK/sources/cxx-stl/gnu-libstdc++/4.8/libs/$ABI/include"
  
  
  
  #-march=armv7-a -mfloat-abi=softfp -mfpu=neon

  EXTRA_CFLAGS="$EXTRA_CFLAGS -march=armv7-a -mfloat-abi=softfp -mfpu=neon"

  EXTRA_CFLAGS="$EXTRA_CFLAGS -Os -fpic $ADDI_CFLAGS"
  
  
  
  #EXTRA_LDFLAGS="-Wl,--fix-cortex-a8 -L$ANDROID_LIBS -Wl,-rpath-    link,$ANDROID_LIBS -L$NDK/sources/cxx-stl/gnu-libstdc++/libs/$ABI"
  
  EXTRA_LDFLAGS="-Wl,--fix-cortex-a8 -L$ANDROID_LIBS -Wl,-rpath-    link,$ANDROID_LIBS -L$NDK/sources/cxx-stl/gnu-libstdc++/4.8/libs/$ABI  -    lstagefright -lstdc++ -lutils -lbinder -lgnustl_static -lgnustl_shared     $ADDI_LDFLAGS"
  
  
  
  EXTRA_CXXFLAGS="-Wno-multichar -fno-exceptions -fno-rtti"
  
  DEST="$DEST/$ABI"
  
  FLAGS="$FLAGS --prefix=$DEST"
  
  
  
  mkdir -p $DEST
  
  
  
  echo $FLAGS --extra-cflags="$EXTRA_CFLAGS" --extra-ldflags="$EXTRA_LDFLAGS" --extra-cxxflags="$EXTRA_CXXFLAGS" > $DEST/info.txt
  
  ./configure $FLAGS --extra-cflags="$EXTRA_CFLAGS" --extra-    ldflags="$EXTRA_LDFLAGS" --extra-cxxflags="$EXTRA_CXXFLAGS"         $ADDITIONAL_CONFIGURE_FLAG | tee $DEST/configuration.txt
  
  [ $PIPESTATUS == 0 ] || exit 1
  
  make clean
  
  echo "make -j4"
  
  make -j4 || exit 1`
  
  -------------------------------------------------------------------------------

• how does one loop a video using ffmpeg on android ?

  15 juillet 2015, par Magicomiralles

  I’m using hiteshsondhi88’s "FFmpeg Android Java" library and it works fine for scaling, trans-coding, and overlaying. However, when I try to loop a video I just get the same un-looped video on my output.

  My code :

  String internalPath = getFilesDir().getPath(); //get internal directory
  
  String command = "-y -f concat -i "+internalPath+"/myList.txt -c copy "+internalPath+"/final.mp4";
  
  ffmpeg.execute(command, ffmpegResponseHandler);

  The text in "myList.txt" is generated programmatically but it looks like this :

  file 'final_unlooped.mp4' file 'final_unlooped.mp4' file 'final_unlooped.mp4' file 'final_unlooped.mp4' file 'final_unlooped.mp4'

  Finally, the log :

  ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
  
  built on Oct  7 2014 15:11:41 with gcc 4.8 (GCC)
  
  configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/i686-linux-android- --arch=x86 --cpu=i686 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/x86 --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -march=i686' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
  libavutil      54.  7.100 / 54.  7.100
  
  libavcodec     56.  1.100 / 56.  1.100
  
  libavformat    56.  4.101 / 56.  4.101
  
  libavdevice    56.  0.100 / 56.  0.100
  
  libavfilter     5.  1.100 /  5.  1.100
  
  libswscale      3.  0.100 /  3.  0.100
  
  libswresample   1.  1.100 /  1.  1.100
  
  libpostproc    53.  0.100 / 53.  0.100
  
  Input #0, concat, from '/data/data/com.testApp/files/myList.txt':
  
  Duration: N/A, start: 0.000000, bitrate: 744 kb/s
  
  Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x640, 744 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
  
  Output #0, mp4, to '/data/data/com.testApp/files/final.mp4':
  
  Metadata:
  
  encoder         : Lavf56.4.101
  
  Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x640, q=2-31, 744 kb/s, 25 fps, 12800 tbn, 12800 tbc
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=  115 fps=0.0 q=-1.0 Lsize=     420kB time=00:00:04.48 bitrate= 768.1kbits/s
  
  video:418kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.509634%

  The OnSuccess() method in the response handler launches indicating that the execution was successful but the output is still unlooped.

  This command works fine on Windows but for some reason it wont work on Android. any ideas of what it could be, or what am I doing wrong ?