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• Android FFMPEG Build with librtmp

  20 décembre 2013, par Dan Turner

  I have been pulling my hair out trying to compile FFMPEG for Android with librtmp enabled. I have successfully built FFMPEG using the Guardian Project here, but it doesn't have librtmp support. The only answer I have found to this issue is on a previous Stack Overflow question (HERE), but it doesn't want to work for me.

  At the moment, I have the cross-compiled librtmp.so.0 file from the official rtmpdump android build in an rtmpdump/librtmp folder sitting in the android-ffmpeg folder. An extract from my configure_ffmpeg.sh file reads as follows :

  ./configure \
  
  $DEBUG_FLAG \
  
  --arch=arm \
  
  --cpu=cortex-a8 \
  
  --target-os=linux \
  
  --enable-runtime-cpudetect \
  
  --prefix=$prefix \
  
  --enable-pic \
  
  --disable-shared \
  
  --enable-static \
  
  --cross-prefix=$NDK_TOOLCHAIN_BASE/bin/$NDK_ABI-linux-androideabi- \
  
  --sysroot="$NDK_SYSROOT" \
  
  --extra-cflags="-I../x264 -mfloat-abi=softfp -mfpu=neon" \
  
  --extra-ldflags="-L../x264" \
  
  --extra-cflags="-I/home/dan/android-ffmpeg/rtmpdump" \
  
  --extra-ldflags="-L/home/dan/android-ffmpeg/rtmpdump -lrtmp"
  
  \
  
  
  
  --enable-version3 \
  
  --enable-gpl \
  
  \
  
  --disable-doc \
  
  --enable-yasm \
  
  \
  
  --enable-decoders \
  
  --enable-encoders \
  
  --enable-muxers \
  
  --enable-demuxers \
  
  --enable-parsers \
  
  --enable-protocols \
  
  --enable-filters \
  
  --enable-avresample \
  
  --enable-libfreetype \
  
  \
  
  --disable-indevs \
  
  --enable-indev=lavfi \
  
  --disable-outdevs \
  
  \
  
  --enable-hwaccels \
  
  \
  
  --enable-ffmpeg \
  
  --disable-ffplay \
  
  --disable-ffprobe \
  
  --enable-ffserver \
  
  --enable-network \
  
  \
  
  --enable-libx264 \
  
  --enable-zlib \
  
  --enable-librtmp \

  When I try to compile this, it eventually displays an error and my FFMPEG config.log file tells me that it can't find -lrtmp. I'm positive I'm directing it to the right directory... does anyone have any ideas ?

  Regards

  Dan

• How to install JavaCV on android and use FFmpegFrameGrabber

  30 janvier 2013, par Muhammad Afzal

  Can someone guide me what am I missing ? I have double checked all the following settings,

  Following steps I followed,

  1. Extract all the *.so files from javacv-android-arm.jar, opencv-2.4.3-android-arm.zip, and ffmpeg-1.0-android-arm.zip directly into the newly created "libs/armeabi" folder
  
  
  
  2. Navigate to Project > Properties > Java Build Path > Libraries and click "Add JARs...".
  
  Select both javacpp.jar and javacv.jar from the newly created "libs" folder. 
  
  
  
  3. Set the environment variable path to C:\opencv\build\x64\vc10\bin;C:\ffmpeg-64\bin;

  Source Code compiles fine but after installing the apk while debugging on HTC wildfire S Device, crashes on following line

  FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(Environment.getExternalStorageDirectory() + "/DCIM/100MEDIA/VIDEO0015.3gp");

  and gives following exception,

  java.lang.UnsatisfiedLinkError: Couldn't load jniavutil: findLibrary returned null

• Get frame rate of a video on Android

  2 novembre 2013, par Gonzalo Solera

  I would like to get the frame-rate of a video on Android. How could I achieve that ?? I´m using ffmpeg statically in my app and I could invoke a command but I don´t know how to get the output... Any idea ? Thanks !