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• Compiling ffmpeg for android on Mac

  6 juillet 2020, par SlaneR

  I tried to compile ffmpeg for android on Mac, but it does not work for me.

  



  #!/bin/bash
NDK=/Users/user/Library/Android/sdk/ndk-bundle
SYSROOT=$NDK/platforms/android-18/arch-arm/
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64

function build_one
{
    ./configure \
    --prefix=$PREFIX \
    --enable-shared \
    --disable-static \
    --disable-doc \
    --disable-ffmpeg \
    --disable-ffplay \
    --disable-ffprobe \
    --disable-network \
    --disable-filters \
    --disable-avdevice \
    --disable-doc \
    --disable-symver \
    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
    --target-os=linux \
    --arch=arm \
    --enable-cross-compile \
    --sysroot=$SYSROOT \
    --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
    --extra-ldflags="$ADDI_LDFLAGS" \
    $ADDITIONAL_CONFIGURE_FLAG

    make clean all
    make
    make install
}

CPU=arm
PREFIX=$(pwd)/android/$CPU 
ADDI_CFLAGS="-marm"

build_one


  



  I also give execute permission via chmod +x build_script.sh

  



  I tried ffmpeg 4.1 and 4.0.3 but both are not work and same error reason.

  



  I also tried on android-21 and android-18

  



  test_cpp_condition stddef.h defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4
test_cpp
BEGIN /tmp/ffconf.bgSdFwkD/test.c
    1   #include 
    2   #if !(defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4)
    3   #error "unsatisfied condition: defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4"
    4   #endif
END /tmp/ffconf.bgSdFwkD/test.c
/Users/user/Library/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/ -Os -fpic -marm -E -o /tmp/ffconf.bgSdFwkD/test.o /tmp/ffconf.bgSdFwkD/test.c
/tmp/ffconf.bgSdFwkD/test.c:3:2: error: "unsatisfied condition: defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4"
#error "unsatisfied condition: defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4"
 ^
1 error generated.
test_cpp_condition stddef.h defined __ARM_ARCH_4T__ || defined __TARGET_ARCH_4T
test_cpp
BEGIN /tmp/ffconf.bgSdFwkD/test.c
    1   #include 
    2   #if !(defined __ARM_ARCH_4T__ || defined __TARGET_ARCH_4T)
    3   #error "unsatisfied condition: defined __ARM_ARCH_4T__ || defined __TARGET_ARCH_4T"
    4   #endif
END /tmp/ffconf.bgSdFwkD/test.c
/Users/user/Library/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/ -Os -fpic -marm -E -o /tmp/ffconf.bgSdFwkD/test.o /tmp/ffconf.bgSdFwkD/test.c
test_ld cc
test_cc
BEGIN /tmp/ffconf.bgSdFwkD/test.c
    1   int main(void){ return 0; }
END /tmp/ffconf.bgSdFwkD/test.c
/Users/user/Library/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/ -Os -fpic -marm -march=armv4t -c -o /tmp/ffconf.bgSdFwkD/test.o /tmp/ffconf.bgSdFwkD/test.c
/Users/user/Library/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/ -march=armv4t -o /tmp/ffconf.bgSdFwkD/test /tmp/ffconf.bgSdFwkD/test.o
ld: unknown option: --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/
clang: error: linker command failed with exit code 1 (use -v to see invocation)
C compiler test failed.


  



  Is there any tools/Applications or libraries I have to additionally install for compiling ? I'm confused.... (THIS QUESTION IS MAY DUPLICATE BUT NONE OF SOLUTION WAS WORKED FOR ME)

  



  EDIT To clarify my system environment.

  



  

  • Mac OS X High Sierra (10.13.6)

  


  • Android NDK (18.1.5063045)

  


  • Android SDK Tools and SDK Build-Tools

  


  • CMake

  


  



  EDIT I also tried ffmpeg version 3.3.9 but it does not work either.

  


• Where is my ffmpeg stream getting saved to ?

  20 mars 2019, par Chris

  I’m just starting to explore ffmpeg (ultimately for use with openCV), and I’m running this command :

  root@beaglebone:/# ffmpeg -f video4linux2 -r 25 -s 640x480 -i /dev/video0 /out.avi

  At which point the camera indicator light turns on and it appears to be capturing. However when I end it with CTRL+C, the file is nowhere to be found.

  Any thoughts ?

  Full output :

  root@beaglebone:/# ffmpeg -f video4linux2 -r 25 -s 640x480 -i /dev/video0 /out.avi
  
  ffmpeg version v0.7.4, Copyright (c) 2000-2011 the Libav developers
  
    built on Oct  9 2012 10:50:57 with gcc 4.5.4 20120305 (prerelease)
  
    configuration: --enable-shared --enable-pthreads --enable-gpl --enable-postproc --enable-avfilter --cross-prefix=arm-angstrom-linux-gnueabi- --prefix=/usr --enable-ffserver --enable-ffplay --enable-x11grab --enable-libtheora --enable-libvorbis --arch=arm --target-os=linux --enable-cross-compile --extra-cflags=' -fexpensive-optimizations -fomit-frame-pointer -O4 -ffast-math -march=armv7-a -fno-tree-vectorize -mthumb-interwork -mfloat-abi=softfp -mfpu=neon -mtune=cortex-a8 --sysroot=/home/koen/setup-scripts/build/tmp-angstrom_v2012_05-eglibc/sysroots/beaglebone' --extra-ldflags='-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed' --sysroot=/home/koen/setup-scripts/build/tmp-angstrom_v2012_05-eglibc/sysroots/beaglebone --enable-hardcoded-tables --cpu=cortex-a8
  
    libavutil    51.  7. 0 / 51.  7. 0
  
    libavcodec   53.  6. 0 / 53.  6. 0
  
    libavformat  53.  3. 0 / 53.  3. 0
  
    libavdevice  53.  0. 0 / 53.  0. 0
  
    libavfilter   2.  4. 0 /  2.  4. 0
  
    libswscale    2.  0. 0 /  2.  0. 0
  
    libpostproc  52.  0. 0 / 52.  0. 0
  
  ^C
  
  root@beaglebone:/# ls
  
  bin   dev  home  lost+found  mnt  proc  sbin  tmp  var
  
  boot  etc  lib   media       opt  run   sys   usr
  
  root@beaglebone:/#

• How to reduce conversion/compression time in FFmpeg and How to merge command ?

  21 novembre 2018, par Patel Pinkal

  I want to reduce time taken to create new video after adding text in original video using FFmpeg
  I had tried to search and I found this code given below for reducing time.

   -y -i /sdcard/videokit/in.mp4 -strict experimental -vcodec libx264 -preset ultrafast -crf 24 -acodec aac -ar 44100 -ac 2 -b 36000k -s 1280x720 -aspect 16:9 -metadata:s:v:0 rotate=0 /sdcard/videokit/out3.mp4

  Now, I want to add text in video and it is done in FFmpeg, by this command and its 100% working.

    String[] addTextCommand = {
  
              "-i",
  
              "" + realFilePath,
  
              "-vf",
  
              "drawtext=fontsize=50:fontfile=/storage/emulated/0/Download/Cerbetica-regular.ttf:fontcolor=red:text='"
  
                      + strText +
  
                      "':x=0:y=0: box=1: boxcolor=black@0.5:boxborderw=10: x=0: y=(h-text_h)/2",
  
              "-strict",
  
              "-2",
  
              outputFilePath};

  Now my problem is how do I merge this two code and make one single command to make an edited video and also take less time to create a new video. In this, I have tried this command but it’s not working.

     String[] addTextCommand = {
  
              "-i",
  
              "" + realVideoPath,
  
              "-vf",
  
              "-c:v", "libx264",
  
              "-preset", "ultrafast",
  
              "-crf", "24",
  
              "-acodec", "aac",
  
              "-ar", "44100",
  
              "-ac", "2",
  
              "-b", "36000k",
  
              "-s", "1280x720",
  
              "-aspect", "16:9",
  
              "-metadata:s:v:0 rotate=0",
  
              "drawtext=fontsize=50:fontfile=/storage/emulated/0/Download/Cerbetica-regular.ttf:fontcolor=red:text='"
  
                      + strText +
  
                      "':x=0:y=0: box=1: boxcolor=black@0.5:boxborderw=10: x=0: y=(h-text_h)/2",
  
              "-strict",
  
              "-2",
  
              outputFilePath};

  If anyone has an idea how to make command of FFmpeg please describe it and explain how to use it.

  Using command of @Mulvya I got this in the console.

       D/MainActivity: FAILED with output : WARNING: linker: /data/user/0/com.inheritx.videoprocessing/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
  
                     ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
                       built with gcc 4.8 (GCC)
  
                       configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/i686-linux-android- --arch=x86 --cpu=i686 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --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/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/x86 --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -march=i686' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
                       libavutil      55. 17.103 / 55. 17.103
  
                       libavcodec     57. 24.102 / 57. 24.102
  
                       libavformat    57. 25.100 / 57. 25.100
  
                       libavdevice    57.  0.101 / 57.  0.101
  
                       libavfilter     6. 31.100 /  6. 31.100
  
                       libswscale      4.  0.100 /  4.  0.100
  
                       libswresample   2.  0.101 /  2.  0.101
  
                       libpostproc    54.  0.100 / 54.  0.100
  
                     Unrecognized option '2'.
  
                     Error splitting the argument list: Option not found
  
     D/MainActivity: Finished command : ffmpeg -i
  
     D/MainActivity: Finished command : ffmpeg /storage/emulated/0/Download/spacetestSMALL_512kb.mp4
  
     D/MainActivity: Finished command : ffmpeg -vf
  
     D/MainActivity: Finished command : ffmpeg drawtext=fontsize=50:fontfile=/system/fonts/DroidSans.ttf:fontcolor=red:text='Hello':x=0:y=0: box=1: boxcolor=black@0.5:boxborderw=10: x=0: y=(h-text_h)/2
  
     D/MainActivity: Finished command : ffmpeg -c:v
  
     D/MainActivity: Finished command : ffmpeg libx264
  
     D/MainActivity: Finished command : ffmpeg -preset
  
     D/MainActivity: Finished command : ffmpeg ultrafast
  
     D/MainActivity: Finished command : ffmpeg -crf
  
     D/MainActivity: Finished command : ffmpeg 24
  
     D/MainActivity: Finished command : ffmpeg -acodec
  
     D/MainActivity: Finished command : ffmpeg aac
  
     D/MainActivity: Finished command : ffmpeg -ar
  
     D/MainActivity: Finished command : ffmpeg 44100
  
     D/MainActivity: Finished command : ffmpeg -s
  
     D/MainActivity: Finished command : ffmpeg 1280x720
  
     D/MainActivity: Finished command : ffmpeg -aspect
  
     D/MainActivity: Finished command : ffmpeg 16:9
  
     D/MainActivity: Finished command : ffmpeg -metadata:s:v:0 rotate=0
  
     D/MainActivity: Finished command : ffmpeg -strict
  
     D/MainActivity: Finished command : ffmpeg -2
  
     D/MainActivity: Finished command : ffmpeg /storage/emulated/0/Movies/add_text25.mp4