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• Node.js FFMPEG Reporting Progress Architecture

  11 septembre 2018, par munkee

  I’m running a node.js HTTP server which has a video conversion API built using ffmpeg. I am wondering how best to report on the progress of the file conversion to a separate front end. The HTTP server is going to be standalone as its own service, so I would like to be able to render the percentage complete of the conversion to another server with a simple front end. Upon completion of the conversion the file is downloaded automatically.

  My current end point /convert takes a file URL with a .mov extension, downloads the file and runs it through the conversion process to only output Audio. Using response headers I force the browser to download the file once the conversion has ended, I also delete the temporary file once download has completed.

  A full request would look like

  https://www.someurl.com/convert?file=https://www.filetodownload.com/Skating.mov

  I am using the fluent-ffmpeg npm package : https://github.com/fluent-ffmpeg/node-fluent-ffmpeg which serves a "progress" event :

  ffmpeg('/path/to/file.avi')
  
    .on('progress', function(progress) {
  
      console.log('Processing: ' + progress.percent + '% done');
  
    });

  I am thinking of emitting the progress.percent information on to a separate endpoint maybe along the lines of :

  https://www.someurl.com/progress

  Which will simply be my http server sending the percentage back to the browser. I feel as though I am going about the architecture incorrectly and there must be a better way of architecting the final outcome.

• How to build FFMPEG for all architecture of android device ?

  13 juillet 2017, par Prakash U

  I am trying to build ffmpeg for android in windows 8.1 using CYGWIN

  I am following This question & How to compile FFMPEG under Cygwin . I succsessfully compile but it is not generate FFMPEG.so but it generate ffmpeg.exe file

  I don’t want any prebuild ffmpeg library . I want to build it for my requirement.

  I perform this steps In CYGWIN BASE

  1. git clone git ://source.ffmpeg.org/ffmpeg.git ffmpeg
  2. dos2unix configure
  3. dos2unix build_ffmpeg.sh
  4. make distclean
  5. ./configure –enable-static –disable-shared
  6. make
  7. make install

  my build_ffmpeg.sh is

  # !/bin/bash

  NDK=/cygdrive/e/android/sdk/ndk-bundle
  PLATFORM=$NDK/platforms/android-24/arch-arm
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/windows
  CPU=arm
  PREFIX=$(pwd)/android/$CPU
  ADDI_CFLAGS="-marm"

  pushd ffmpeg
  # Configure
  ./configure \
  —target-os=android \
  —prefix=$PREFIX \
  —enable-cross-compile \
  —enable-runtime-cpudetect \
  —disable-asm \
  —arch=arm \
  —cc=$TOOLCHAIN/bin/arm-linux-androideabi-gcc \
  —cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  —disable-stripping \
  —nm=$TOOLCHAIN/bin/arm-linux-androideabi-nm \
  —sysroot=$PLATFORM \
  —disable-programs \
  —disable-doc \
  —enable-protocol=file \
  —disable-avresample \
  —enable-gpl \
  —enable-version3 \
  —enable-nonfree \
  —disable-ffplay \
  —disable-ffserver \
  —disable-ffmpeg \
  —disable-ffprobe \
  —extra-cflags="-fPIC -DANDROID -D__thumb__ -mthumb -Wfatal-errors -Wno-deprecated $ADDI_CFLAGS" \
  —extra-libs="-lgcc" \
  —extra-ldflags="-L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog"
  # Make
  make clean
  make -j5
  make -j5 install

  popd

  My LOG file is here

  My question is how to build ffmpeg for all architecture of android device ?

• avutil/mem : Add DECLARE_ASM_ALIGNED macro for DJGPP architecture.

  14 novembre 2017, par Thomas Köppe

  avutil/mem : Add DECLARE_ASM_ALIGNED macro for DJGPP architecture.
  The macro was added in 43171a2a738f5114768d34a7278e56e5fde714bc, but I forgot to add it to the DJGPP architecture in that change.
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavutil/mem.h