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• Compiling FFmpeg : libx264 not found

  17 mars 2016, par SaidTagnit

  I hope some one helps me the solve this problems. I was trying to compile FFmpeg 2.2.3 library under ubuntu 12.04LTS for android using android ndk r10e by following this tutorials :

  Tutorial1

  Tutorial2

  here is my build_android.sh file :

  #!/bin/bash
  
  NDK=/home/rango/Desktop/android-ndk-r10e
  
  SYSROOT=$NDK/platforms/android-19/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86
  
  
  
  #ADDI_LDFLAGS="-L /usr/local/lib"
  
  #ADDI_CFLAGS="-I /usr/include"
  
  
  
  function build_one
  
  {
  
  ./configure \
  
  --prefix=$PREFIX \
  
  --enable-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 \
  
  --enable-gpl \
  
  --enable-libx264 \
  
  --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" \
  
  
  
  make clean
  
  make -j4
  
  make install
  
  }
  
  
  
  CPU=arm
  
  PREFIX=$(pwd)/android/$CPU
  
  
  
  build_one

  when i execute buid_android.sh script without —enable-libx264 \ line everything is going well and i can get .a files on android/arm/ folder. but with this line it fails and show the following error in the console :

  ERROR : libx264 not found

  If you think configure made a mistake, make sure you are using the
  latest version from Git. If the latest version fails, report the
  problem to the ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on
  irc.freenode.net. Include the log file "config.log" produced by
  configure as this will help

  it seems like it can’t find where the libraries are, as i get a lot of the following errors in config.log file :

  "LIBNAME".h : No such file or directory
  newlib.h : No such file or
  directory mingw.h : No such file or directory
  x264.h : No such file or
  directory

  Here is the tail of config.log file :

  check_mathfunc truncf 1
  
  check_ld cc
  
  check_cc
  
  BEGIN /tmp/ffconf.zGKqGin6.c
  
      1   #include 
  
      2   float foo(float f, float g) { return truncf(f); }
  
      3   int main(void){ return (int) foo; }
  
  END /tmp/ffconf.zGKqGin6.c
  
  /home/rango/Desktop/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86/bin/arm-linux-androideabi-gcc --sysroot=/home/rango/Desktop/android-ndk-r10e/platforms/android-19/arch-arm/ -isysroot /home/rango/Desktop/android-ndk-r10e/platforms/android-19/arch-arm/ -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -Os -fpic -marm -march=armv5te -std=c99 -fomit-frame-pointer -fPIC -marm -pthread -c -o /tmp/ffconf.8Q9ke3aO.o /tmp/ffconf.zGKqGin6.c
  
  /home/rango/Desktop/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86/bin/arm-linux-androideabi-gcc --sysroot=/home/rango/Desktop/android-ndk-r10e/platforms/android-19/arch-arm/ -isysroot /home/rango/Desktop/android-ndk-r10e/platforms/android-19/arch-arm/ -Wl,--as-needed -o /tmp/ffconf.3sjTkc5z /tmp/ffconf.8Q9ke3aO.o -lm -lz -pthread
  
  check_lib x264.h x264_encoder_encode -lx264
  
  check_header x264.h
  
  check_cpp
  
  BEGIN /tmp/ffconf.zGKqGin6.c
  
      1   #include 
  
      2   int x;
  
  END /tmp/ffconf.zGKqGin6.c
  
  /home/rango/Desktop/android-ndk-r10e/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86/bin/arm-linux-androideabi-gcc --sysroot=/home/rango/Desktop/android-ndk-r10e/platforms/android-19/arch-arm/ -isysroot /home/rango/Desktop/android-ndk-r10e/platforms/android-19/arch-arm/ -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -Os -fpic -marm -march=armv5te -std=c99 -fomit-frame-pointer -fPIC -marm -pthread -E -o /tmp/ffconf.8Q9ke3aO.o /tmp/ffconf.zGKqGin6.c
  
  /tmp/ffconf.zGKqGin6.c:1:18: fatal error: x264.h: No such file or directory
  
   #include 
  
                    ^
  
  compilation terminated.
  
  ERROR: libx264 not found

• Audio decoding stopped working ffmpeg

  17 juin 2016, par Steva

  I wrote little program for extracting raw audio date a little while ago. I was busy and in meanwhile I changed OS from Kubuntu 15.04 to 16.04. Libraries are dynamically linked in cmakelists.txt

  target_link_libraries(
  
      ffmpeg 
  
  #[[ Linking ffmpeg libraries - START ------------------]]
  
              "${CMAKE_SOURCE_DIR}/extern_libs/libffmpeg/lib/libavcodec.so"
  
              "${CMAKE_SOURCE_DIR}/extern_libs/libffmpeg/lib/libavdevice.so"
  
              "${CMAKE_SOURCE_DIR}/extern_libs/libffmpeg/lib/libavutil.so"
  
              "${CMAKE_SOURCE_DIR}/extern_libs/libffmpeg/lib/libavfilter.so"
  
              "${CMAKE_SOURCE_DIR}/extern_libs/libffmpeg/lib/libavformat.so"
  
              "${CMAKE_SOURCE_DIR}/extern_libs/libffmpeg/lib/libswresample.so"
  
              "${CMAKE_SOURCE_DIR}/extern_libs/libffmpeg/lib/libswscale.so" 
  
  #[[ Linking ffmpeg libraries - END --------------------]]
  
  )

  I started working again on my code but code doesn’t work anymore.

  if(av_read_frame(m_ctx, &avpkt) >= 0){
  
          got_frame = 0;
  
          avcodec_decode_audio4(c, decoded_frame, &got_frame, &avpkt);
  
  
  
          detectSampleFormat((AVSampleFormat)decoded_frame->format);
  
          m_data->allocateMemory(m_duration, decoded_frame->channels);
  
          m_resampler->initResampler(m_fmt, decoded_frame->channel_layout, decoded_frame->sample_rate, decoded_frame->nb_samples);
  
          m_resampler->resampleAudioFrame(decoded_frame, m_data);     
  
      }
  
  
  
      while(av_read_frame(m_ctx, &avpkt) >= 0){
  
          got_frame = 0;
  
          avcodec_decode_audio4(c, decoded_frame, &got_frame, &avpkt);
  
          m_resampler->resampleAudioFrame(decoded_frame, m_data);     
  
  
  
      }

  Decoded frame should contain information as channel_layout, number of channels and so on... But during execution of program those are 0 or nulls.

  Can anyone help me with this ? I am unclear why this was working some while ago (I last worked on this code in March) and same code doesn’t work anymore.

  EDIT :
  I found problem. First frame which is read from file is damaged or something, so I just waited for first correct frame to initialize my components.

  This question can be closed.

• FFMpeg - add background music

  20 mars 2016, par jacky brown

  here is what i have :
  input1.avi - video that contain sounds.
  input2.avi - video that doesn’t contain sounds.
  music.mp3 - audio file.

  i want to add background music(music.mp3 file) to the video.

  C:\input1.avi -i C:\music.mp3 -shortest -c:v copy -c:a copy C:\output1.avi

  then output1.avi is the same as input1 - movie with sounds but without the background music (music.mp3)

  when i try to use the other file (video without sounds) :

  C:\input2.avi -i C:\music.mp3 -shortest -c:v copy -c:a copy C:\output2.avi

  then output2.avi is the same as input2 + it have the background music.

  so why input1 does not contain the background music ???
  and how can i decrease or increase the volume of music.mp3 file ?

  thanks.

  ---

  console output :

  C:\motionbee\ffmpeg\bin>ffmpeg -i C:\input.avi
  
  -i C:\music.mp3 -shortest -c:v copy -filter_
  
  complex "[0:a]aformat=fltp:44100:stereo[0a];[1]aformat=fltp:44100:stereo,volume=
  
  1.5[1a];[0a][1a]amix[a]" -map 0:v -map "[a]" -ac 2 C:\output1.avi
  
  ffmpeg version N-78949-g6f5048f Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 5.3.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
  
  enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
  
  ibilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopenc
  
  ore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --ena
  
  ble-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable
  
  -libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --ena
  
  ble-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx
  
  264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable
  
  -lzma --enable-decklink --enable-zlib
  
    libavutil      55. 19.100 / 55. 19.100
  
    libavcodec     57. 27.101 / 57. 27.101
  
    libavformat    57. 28.100 / 57. 28.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 39.100 /  6. 39.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, avi, from 'C:\input.avi':
  
    Metadata:
  
      encoder         : Lavf57.28.100
  
    Duration: 00:02:05.76, start: 0.000000, bitrate: 450 kb/s
  
      Stream #0:0: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 720
  
  x480 [SAR 1:1 DAR 3:2], 440 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
      Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 44100 Hz, stereo, s16p, 128 k
  
  b/s
  
  [mp3 @ 00000000005c8020] Skipping 0 bytes of junk at 32370.
  
  Input #1, mp3, from 'C:\music.mp3':
  
    Metadata:
  
      title           : Broadcast News Package - News Intro
  
      artist          : After Effects News Template
  
    Duration: 00:01:57.89, start: 0.025057, bitrate: 194 kb/s
  
      Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
  
      Metadata:
  
        encoder         : Lavc56.26
  
  File 'C:\output1.avi' already exists. Overwrite
  
  ? [y/N] y
  
  Output #0, avi, to 'C:\output1.avi':
  
    Metadata:
  
      ISFT            : Lavf57.28.100
  
      Stream #0:0: Video: mpeg4 (XVID / 0x44495658), yuv420p, 720x480 [SAR 1:1 DAR
  
   3:2], q=2-31, 440 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
      Stream #0:1: Audio: mp3 (libmp3lame) (U[0][0][0] / 0x0055), 44100 Hz, stereo
  
  , fltp (default)
  
      Metadata:
  
        encoder         : Lavc57.27.101 libmp3lame
  
  Stream mapping:
  
    Stream #0:1 (mp3) -> aformat
  
    Stream #1:0 (mp3) -> aformat
  
    Stream #0:0 -> #0:0 (copy)
  
    amix -> Stream #0:1 (libmp3lame)
  
  Press [q] to stop, [?] for help
  
  frame= 3118 fps=0.0 q=-1.0 Lsize=    6917kB time=00:02:05.76 bitrate= 450.6kbits
  
  /s speed= 867x
  
  video:6754kB audio:74kB subtitle:0kB other streams:0kB global headers:0kB muxing
  
   overhead: 1.307944%