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• swresample : allow double precision beta value for the Kaiser window

  7 novembre 2015, par Ganesh Ajjanagadde

  swresample : allow double precision beta value for the Kaiser window
  Kaiser windows inherently don’t require beta to be an integer. This was
  
  an arbitrary restriction. Moreover, soxr does not require it, and in
  
  fact often estimates beta to a non-integral value.
  Thus, this patch allows greater flexibility for swresample clients.
  
  Micro version is updated.
  Reviewed-by : Derek Buitenhuis <derek.buitenhuis@gmail.com>
  
  Reviewed-by : Michael Niedermayer <michael@niedermayer.cc>
  
  Signed-off-by : Ganesh Ajjanagadde <gajjanagadde@gmail.com>
  

  • [DH] doc/resampler.texi
  • [DH] libswresample/options.c
  • [DH] libswresample/resample.c
  • [DH] libswresample/resample.h
  • [DH] libswresample/soxr_resample.c
  • [DH] libswresample/swresample_internal.h
  • [DH] libswresample/version.h

• How To Stream Video File Cross Browser On Same URL

  18 novembre 2015, par Qasim Khokhar

  I am trying to make Video Streaming Application, I have a controller which can stream mp4 video which is not working with Firefox.

  def get(self, request):
  
  
  
          filename = 'uploads/SampleVideo_1080x720_1mb.mp4' # Select your file here.
  
          wrapper = FileWrapper(file(filename))
  
          response = StreamingHttpResponse(wrapper, content_type='video/ogg; multipart/x-mixed-replace; boundary=frame')
  
          response['Content-Length'] = os.path.getsize(filename)
  
  
  
          return response

  if anyone can guide me to make it for different browsers ll be appreciated.

  actually i want to send stream encoding according to browser or client. dynamically. i am new in python.

  which technique is used by Youtube : how youtube serves videos on blob:https%3A//www.youtube.com/456e268f-bdfe-4ce7-8368-6b646a3ec5e8 what is blob :

• Android cross compiling FFmpeg 2.8.2 with NDK r10e on a mac

  24 novembre 2015, par LostPuppy

  I am trying to compile the latest FFmpeg version 2.8.2 on a mac with NDK r10e and I keep getting the following error.

  ./libavutil/arm/bswap.h:42:13: error: instruction requires: armv6
  
  __asm__("rev16 %0, %0" : "+r"(x));

  I link to the config file is : config.log and the following is my build file. Any help is much appreciated

  #!/bin/bash
  
  
  
  NDK=/Users/Test/Documents/FFmpeg/android-ndk-r10e
  
  TOOL_DIR_ARM=$NDK/sources/ffmpeg-2.8.2/my-android-toolchain
  
  #TOOL_DIR_ARM=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64
  
  SYSROOT=$NDK/platforms/android-21/arch-arm
  
  
  
  if [ -d $TOOL_DIR_ARM ]; then
  
      echo "removing tool chain directory"
  
      rm -r $TOOL_DIR_ARM
  
  fi
  
  
  
  $NDK/build/tools/make-standalone-toolchain.sh \
  
      --platform=android-21 \
  
      --arch=arm \
  
      --install-dir=$TOOL_DIR_ARM \
  
      --toolchain=arm-linux-androideabi-clang3.6\
  
      --llvm-version=3.6 \
  
      --system=darwin-x86_64
  
  
  
  if [ -d $SYSROOT ]; then
  
      echo "$SYSROOT is a valid directory"
  
  fi
  
  
  
  function build_x264
  
  {
  
  cd x264
  
  
  
  # another build for phone
  
  
  
  ./configure \
  
  --cross-prefix=$NDK/sources/ffmpeg-2.8.2/my-android-toolchain/bin/arm-linux-androideabi- \
  
  --sysroot=$SYSROOT \
  
  --host=arm-linux \
  
  --enable-static \
  
  --enable-pic \
  
  --disable-cli 
  
  make clean
  
  make -j4
  
  make install
  
  
  
  cd ../
  
  }
  
  
  
  
  
  function build_one
  
  {
  
  cd android-ndk-r10e/sources/ffmpeg-2.8.2/
  
  
  
  # another build for phone
  
  ./configure \
  
  --sysroot=$SYSROOT \
  
  --target-os=linux \
  
  --arch=arm \
  
  --cross-prefix=$TOOL_DIR_ARM/bin/arm-linux-androideabi- \
  
  --cc=$TOOL_DIR_ARM/bin/clang \
  
  --enable-cross-compile \
  
  --enable-encoder=mpeg4 \
  
  --enable-pthreads \
  
  --enable-gpl \
  
  --enable-libx264 \
  
  --enable-pic \
  
  --extra-cflags='-I/usr/local/include' \
  
  --extra-ldflags='-L/usr/local/lib'
  
  
  
  make clean
  
  make -j4
  
  make install
  
  
  
  }
  
  echo "Building x_264 library"
  
  build_x264
  
  echo "Building FFmpeg"
  
  build_one

  one additional compile warning that I see is

  WARNING: /Users/Test/Documents/FFmpeg/android-ndk-r10e/sources/ffmpeg-2.8.2/my-andr`enter code here`oid-toolchain/bin/arm-linux-androideabi-pkg-config not found, library detection may fail.
  
  WARNING: using libx264 without pkg-config