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• FFmpeg compile for Android (configure, make)

  11 août 2013, par manutd

  I want to compile ffmpeg for Android ver.
  But everytime I try, I can't compile the source of ffmpeg.
  I think my configuration option may be invalid.

  I used this script for configure.

  #!/bin/sh
  
  NDK_PATH=$HOME/android-ndk-r8
  
  PREBUILT=$NDK_PATH/toolchains/arm-linux-androideabi-4.4.3/prebuilt/darwin-x86
  
  
  
  LDFLAGS="-Wl,-T,$PREBUILT/armelf_linux_eabi.x -Wl,-rpath-link=$NDK_PATH/platforms/android-8/arch-arm/usr/lib \
  
       -L$NDK_PATH/platforms/android-8/arch-arm/usr/lib -nostdlib $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/crtbegin.o \
  
       $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/crtend.o -lc -lm -ldl"
  
  COMMON_CONFIG="\
  
            ./configure --target-os=linux \
  
            --arch=arm \
  
            --enable-cross-compile \
  
            --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
  
            --as=$PREBUILT/bin/arm-linux-androideabi-gcc \
  
            --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
  
            --sysinclude=$NDK_PATH/platforms/android-8/arch-arm/usr/include \
  
            --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
  
            --extra-ldflags=\"$LDFLAGS\" \
  
            --extra-cflags=-I$NDK_PATH/platforms/android-8/arch-arm/usr/include \
  
  
  
  eval "$COMMON_CONFIG"
  
  if [ $? -ne 0 ]; then
  
    exit 1
  
  fi

  I have to give compiler a new header file path (by —extra-cflags) because when I typed 'make', compiler didn't know where are header files (like math.h, ctime.h)

  After configure using this scripts and type 'make', I got these error.

  CC  libavdevice/alldevices.o
  
  In file included from /Users/gyeongmingim/android-ndk-r8/platforms/android-8/arch-arm/usr/include/stdlib.h:42,
  
               from ./libavutil/common.h:35,
  
               from ./libavutil/avutil.h:126,
  
               from libavdevice/avdevice.h:22,
  
               from libavdevice/alldevices.c:22:
  
  /Users/gyeongmingim/android-ndk-r8/platforms/android-8/arch-arm/usr/include/strings.h:49: warning: redundant redeclaration of 'index'
  
  /Users/gyeongmingim/android-ndk-r8/platforms/android-8/arch-arm/usr/include/string.h:47: note: previous declaration of 'index' was here
  
  /Users/gyeongmingim/android-ndk-r8/platforms/android-8/arch-arm/usr/include/strings.h:50: warning: redundant redeclaration of 'strcasecmp'
  
  /Users/gyeongmingim/android-ndk-r8/platforms/android-8/arch-arm/usr/include/string.h:57: note: previous declaration of 'strcasecmp' was here
  
  /Users/gyeongmingim/android-ndk-r8/platforms/android-8/arch-arm/usr/include/strings.h:51: warning: redundant redeclaration of 'strncasecmp'
  
  /Users/gyeongmingim/android-ndk-r8/platforms/android-8/arch-arm/usr/include/string.h:58: note: previous declaration of 'strncasecmp' was here
  
  In file included from ./libavutil/internal.h:178,
  
               from ./libavutil/common.h:342,
  
               from ./libavutil/avutil.h:126,
  
               from libavdevice/avdevice.h:22,
  
               from libavdevice/alldevices.c:22:
  
  ./libavutil/libm.h:62: error: static declaration of 'lrint' follows non-static declaration
  
  ./libavutil/libm.h:69: error: static declaration of 'lrintf' follows non-static declaration
  
  ./libavutil/libm.h:76: error: static declaration of 'round' follows non-static declaration
  
  ./libavutil/libm.h:90: error: static declaration of 'trunc' follows non-static declaration
  
  make: *** [libavdevice/alldevices.o] Error 1

  What is the wrong ?
  Does my configuration have wrong info ? or any missing flag ?

  OS : Mac Lion
  Android-ndk ver : android-ndk-r8

• Revision 30118 : protéger des erreurs si pas configuré

  23 juillet 2009, par kent1@… — Log

  protéger des erreurs si pas configuré

• FFmpeg does not encode chapter titles [closed]

  15 octobre 2023, par Shironats

  I am trying to add chapters to a .mp4 file.
When I tried extracting the metadata using the following command :

  


  ffmpeg -i INPUT.mp4 -f ffmetadata FFMETADATAFILE.txt

  


  I got an output file as follows :

  


  ;FFMETADATA1
major_brand=mp42
minor_version=0
compatible_brands=isommp42
encoder=Lavf60.15.100


  


  So now I try to add some chapters as such

  


  [CHAPTER]
TIMEBASE=1/1000
START=0
END=424510
title=mytitle1

[CHAPTER]
TIMEBASE=1/1000
START=424511
END=941600
title=mytitle2

[CHAPTER]
TIMEBASE=1/1000
START=941601
END=1227260
title=mytitle3


  


  I use the ffmpeg -i INPUT.mp4 -i FFMETADATAFILE.txt -map_metadata 1 -codec copy OUTPUT.mp4 command to encode the metadata to my video file, and for some reason I only ever get 'Chapter 0', 'Chapter 1', and 'Chapter 2'.

  


  I tried using the -map_chapters 1 argument as well but results have been unchanged.

  


  I am using the Latest Auto-Build (2023-10-14 13:02) Windows build by BtbN. Thanks in advance for the help.