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• Reduce compiled ffmpeg library size based on what I need

  20 septembre 2014, par Alin

  I finally managed to build ffmpeg as detailed in here : https://enoent.fr/blog/2014/06/20/compile-ffmpeg-for-android/ and in the end, I have a ffmpeg library which accepts command arguments.

  I am ONLY applying a watermark image over the video so for it I am using this ffmpeg command :

  ffmpeg -i input.avi -i logo.png -filter_complex 'overlay=10:main_h-overlay_h-10' output.avi

  Basic config :

    ./configure \
  
      --prefix=$PREFIX \
  
      --disable-shared \
  
      --enable-static \
  
      --disable-doc \
  
      --disable-ffmpeg \
  
      --disable-ffplay \
  
      --disable-ffprobe \
  
      --disable-ffserver \
  
      --disable-doc \
  
      --disable-symver \
  
      --enable-protocol=concat \
  
      --enable-protocol=file \
  
      --enable-muxer=mp4 \
  
      --enable-demuxer=mpegts \
  
      --enable-memalign-hack \
  
      --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
      --target-os=linux \
  
      --arch=arm \
  
      --enable-cross-compile \
  
      --sysroot=$SYSROOT \
  
      --extra-cflags="-Os -fpic -marm $ADDI_CFLAGS" \
  
      --extra-ldflags="$ADDI_LDFLAGS"

  No other commands needed from ffmpeg.

  When compiling ffmpeg I get these files :

  

  I want to reduce the size of the library to as small as possible, so given the above command, are there any files that I can remove from final build ?

  ALSO which is the most common CPU found in current devices ? arm v7vfpv3, arm v7vfp, arm v7n ? I want to cover as many devices as possible.

  #arm v6
  
  #CPU=armv6
  
  #OPTIMIZE_CFLAGS="-marm -march=$CPU"
  
  #PREFIX=./android/$CPU 
  
  #ADDITIONAL_CONFIGURE_FLAG=
  
  #build_one
  
  
  
  #arm v7vfpv3
  
  CPU=armv7-a
  
  OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
  
  PREFIX=./android/$CPU
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one
  
  
  
  #arm v7vfp
  
  #CPU=armv7-a
  
  #OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU "
  
  #PREFIX=./android/$CPU-vfp
  
  #ADDITIONAL_CONFIGURE_FLAG=
  
  #build_one
  
  
  
  #arm v7n
  
  #CPU=armv7-a
  
  #OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=neon -marm -march=$CPU -mtune=cortex-a8"
  
  #PREFIX=./android/$CPU 
  
  #ADDITIONAL_CONFIGURE_FLAG=--enable-neon
  
  #build_one
  
  
  
  #arm v6+vfp
  
  #CPU=armv6
  
  #OPTIMIZE_CFLAGS="-DCMP_HAVE_VFP -mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU"
  
  #PREFIX=./android/${CPU}_vfp 
  
  #ADDITIONAL_CONFIGURE_FLAG=
  
  #build_one

• compiling ffmpeg 2.3 for android with NDK r10 on windows [duplicate]

  25 août 2014, par L.Grillo

  This question already has an answer here :

  • How to compile ffmpeg-2.2.2 on windows with cygwin and android ndk r9c
    
    1 answer
    

  After a week i’m trying to compile ffmpeg for android.
  I can’t find a static build in the entire web exept for https://github.com/guardianproject/android-ffmpeg-java/tree/master/res/raw but is 0.11 version one.

  This is my build.sh

  #!/usr/bin/env bash
  
  
  
  NDK=C:/Android/android-ndk-r10
  
  SYSROOT=$NDK/platforms/android-18/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/windows-x86_64
  
  
  
  function build_one
  
  {
  
  ./configure \
  
      --arch=arm \
  
      --target-os=linux \
  
      --enable-runtime-cpudetect \
  
      --enable-pic \
  
      --disable-shared \
  
      --enable-static \
  
      --extra-cflags='-march=armv6' \
  
      --extra-ldflags="$ADDI_LDFLAGS" \
  
      --enable-ffmpeg \
  
      --disable-ffplay \
  
      --disable-ffprobe \
  
      --disable-ffserver\
  
      --disable-network \
  
      --enable-cross-compile \
  
      --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
      --sysroot=$SYSROOT \
  
      $ADDITIONAL_CONFIGURE_FLAG
  
  make clean
  
  make -j4
  
  make install
  
  }
  
  
  
  CPU=arm
  
  PREFIX=$(pwd)/android/$CPU
  
  ADDI_CFLAGS="-marm"
  
  
  
  build_one

  It seems everything works good except the compilation stopped after 4 files :

  

  It seems to stay here forever. After 4 hours nothing is moving.
  the process "make.exe (32 bit)" is running with 18% of cpu

  Any help will be precious.
  Thank u

• FFMPEG adding watermark At least one output file has to be specified

  12 juillet 2014, par seshu450

  I am trying to add a watermark at bottom right corner of video using FFMPEG lib in android. I am getting the error as follows.

  Logcat Output :

  ffmpeg version 1.2 Copyright (c) 2000-2013 the FFmpeg developers built on Mar 31 2013 23:44:57 with gcc 4.6 (GCC) 20120106 (prerelease)

  configuration : —arch=arm —target-os=linux —enable-runtime-cpudetect —enable-pic —disable-shared —enable-static —cross-prefix=/opt/android-ndk-r8e/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86_64/bin/arm-linux-androideabi- —sysroot=/opt/android-ndk-r8e/platforms/android-8/arch-arm —extra-cflags=’-march=armv6’ —extra-ldflags= —enable-ffmpeg —disable-ffplay —disable-ffprobe —disable-ffserver —disable-network libavutil

  52.18.100 / 52. 18.100 libavcodec 54. 92.100 / 54. 92.100 libavformat 54. 63.104 / 54. 63.104 libavdevice 54. 3.103 / 54. 3.103 libavfilter 3. 42.103 / 3. 42.103 libswscale 2. 2.100 / 2. 2.100 libswresample 0. 17.102 / 0. 17.102Trailing options were found on the commandline.Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ’/data/data/com.vl.videologotest/cache/700kb.mp4’ :

  Metadata : major_brand : isom minor_version : 0 compatible_brands : isom3gp4 creation_time : 2014-07-09 12:42:10 Duration : 00:00:06.70, start : 0.000000, bitrate : 878 kb/s Stream #0:0(eng) : Video : h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x240, 768 kb/s, 29.65 fps, 59.92 tbr, 90k tbn, 180k tbc

  Metadata : creation_time : 2014-07-09 12:42:10 handler_name : VideoHandle Stream #0:1(eng) : Audio : aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 122 kb/s

  Metadata : creation_time : 2014-07-09 12:42:10 handler_name : SoundHandleInput #1, image2, from ’/data/data/com.vl.videologotest/cache/logo.png’ : Duration : 00:00:00.04, start : 0.000000, bitrate : N/A Stream #1:0 : Video : png, rgba, 72x72, 25 tbr, 25 tbn, 25 tbcAt least one output file must be specified.

  The command I used to add the water mark is

  ffmpeg -i 700kb.mp4 -vf movie=logo.png [wm]; [in][wm] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out] -c:a copy AbcOut.mp4