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• Compiling FFmpeg on OSX - "speex not found using pkg-config"

  19 septembre 2016, par n4zArh

  I recently had few problems with FFmpeg and compiling it to get library. I managed to get through all of them, however recently I found out I need to add Speex decoder (and possibly encoder) to my project. I got Speex by sources, ./configure and make;make install (later - as I had problems - I also used Brew to download Speex). I added --enable-libspeex to my configure script and every time I try to use it I get "Speex not found using pkg-config" error.

  I am sure that there’s Speex files at /usr/local/include and lib directories, I also added those two as CFLAGS and LDFLAGS, I tried building Speex with or without using --prefix (both pointing to /usr/ and /usr/local/), I tried modifying FFmpeg’s configure file (require_pkg_config with Speex call), but no matter what I try to do I fail to build it - every time with same error.

  Long story short - how to build FFmpeg with Speex decoder on OSX ? I read somewhere that libspeex-dev might be needed, but it’s available through apt-get and not Brew (unless I screwed something up).

  My build script :

  #!/bin/bash
  
  
  
  if [ "$NDK" = "" ]; then
  
      echo NDK variable not set, assuming ${HOME}/android-ndk
  
      export NDK=${HOME}/Library/Android/sdk/ndk-bundle
  
  fi
  
  
  
  SYSROOT=$NDK/platforms/android-16/arch-arm
  
  # Expand the prebuilt/* path into the correct one
  
  TOOLCHAIN=`echo $NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64`
  
  export PATH=$TOOLCHAIN/bin:$PATH
  
  
  
  rm -rf build/ffmpeg
  
  mkdir -p build/ffmpeg
  
  cd ffmpeg
  
  
  
  # Don't build any neon version for now
  
  for version in armv5te armv7a; do
  
  
  
  DEST=../build/ffmpeg
  
  FLAGS="--target-os=linux --cross-prefix=arm-linux-androideabi- --arch=arm"
  
  FLAGS="$FLAGS --sysroot=$SYSROOT"
  
  FLAGS="$FLAGS --enable-shared --disable-symver"
  
  FLAGS="$FLAGS --enable-small"
  
  FLAGS="$FLAGS --disable-everything"
  
  FLAGS="$FLAGS --enable-decoder=h264 --enable-decoder=adpcm_ima_oki --enable-decoder=adpcm_ima_ws"
  
  FLAGS="$FLAGS --enable-encoder=adpcm_ima_qt --enable-encoder=adpcm_ima_wav --enable-encoder=adpcm_g726"
  
  FLAGS="$FLAGS --enable-encoder=adpcm_g722 --enable-libspeex"
  
  
  
  case "$version" in
  
      neon)
  
          EXTRA_CFLAGS="-march=armv7-a -mfloat-abi=softfp -mfpu=neon"
  
          EXTRA_LDFLAGS="-Wl,--fix-cortex-a8"
  
          # Runtime choosing neon vs non-neon requires
  
          # renamed files
  
          ABI="armeabi-v7a"
  
          ;;
  
      armv7a)
  
          EXTRA_CFLAGS="-march=armv7-a -mfloat-abi=softfp"
  
          EXTRA_LDFLAGS=""
  
          ABI="armeabi-v7a"
  
          ;;
  
      *)
  
          EXTRA_CFLAGS=""
  
          EXTRA_LDFLAGS=""
  
          ABI="armeabi"
  
          ;;
  
  esac
  
  DEST="$DEST/$ABI"
  
  FLAGS="$FLAGS --prefix=$DEST"
  
  EXTRA_CFLAGS="$EXTRA_CFLAGS -I/usr/local/include/"
  
  EXTRA_LDFLAGS="$EXTRA_LDFLAGS -L/usr/local/lib"
  
  PKT_CONFIG_PATH="/usr/lib/pkgconfig/"
  
  mkdir -p $DEST
  
  echo $FLAGS --extra-cflags="$EXTRA_CFLAGS" --extra-ldflags="$EXTRA_LDFLAGS" > $DEST/info.txt
  
  ./configure $FLAGS --extra-cflags="$EXTRA_CFLAGS" --extra-ldflags="$EXTRA_LDFLAGS" | tee $DEST/configuration.txt
  
  [ $PIPESTATUS == 0 ] || exit 1
  
  rm compat/strtod.o
  
  rm compat/strtod.d
  
  make clean
  
  make -j4 || exit 1
  
  make install || exit 1
  
  
  
  done

  Tail of config.log :

  BEGIN /tmp/ffconf.QcYgKHFW.c
  
      1   #include 
  
      2   #include 
  
      3   float foo(complex float f, complex float g) { return cabs(f * I); }
  
      4   int main(void){ return (int) foo; }
  
  END /tmp/ffconf.QcYgKHFW.c
  
  arm-linux-androideabi-gcc --sysroot=/Users/mgriszbacher/Library/Android/sdk/ndk-bundle/platforms/android-16/arch-arm -isysroot /Users/mgriszbacher/Library/Android/sdk/ndk-bundle/platforms/android-16/arch-arm -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -I/usr/local/include/ -march=armv5te -std=c99 -fomit-frame-pointer -fPIC -marm -pthread -c -o /tmp/ffconf.vfjjuG7b.o /tmp/ffconf.QcYgKHFW.c
  
  /tmp/ffconf.QcYgKHFW.c:1:21: fatal error: complex.h: No such file or directory
  
   #include 
  
                   ^
  
  compilation terminated.
  
  check_complexfunc cexp 1
  
  check_ld cc
  
  check_cc
  
  BEGIN /tmp/ffconf.QcYgKHFW.c
  
      1   #include 
  
      2   #include 
  
      3   float foo(complex float f, complex float g) { return cexp(f * I); }
  
      4   int main(void){ return (int) foo; }
  
  END /tmp/ffconf.QcYgKHFW.c
  
  arm-linux-androideabi-gcc --sysroot=/Users/mgriszbacher/Library/Android/sdk/ndk-bundle/platforms/android-16/arch-arm -isysroot /Users/mgriszbacher/Library/Android/sdk/ndk-bundle/platforms/android-16/arch-arm -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Dstrtod=avpriv_strtod -DPIC -I/usr/local/include/ -march=armv5te -std=c99 -fomit-frame-pointer -fPIC -marm -pthread -c -o /tmp/ffconf.vfjjuG7b.o /tmp/ffconf.QcYgKHFW.c
  
  /tmp/ffconf.QcYgKHFW.c:1:21: fatal error: complex.h: No such file or directory
  
   #include 
  
                   ^
  
  compilation terminated.
  
  check_pkg_config speex speex/speex.h speex_decoder_init -lspeex
  
  false --exists --print-errors speex
  
  ERROR: speex not found using pkg-config

• Compile ffmpeg and x264 with —enable-shared

  20 août 2016, par John Allard

  I am trying to compile ffmpeg with shared-library support, because when I compiled it statically it ended up making huge libraries, like libavcodec.a with 75MB in size. Any programs that I compiled against libavcodec was at least 50MB in size. This only happens on my RaspberryPi though, if I do

  ls -lsth $(which ffmpeg)

  on my RPI3 I get

  15M -rwxr-xr-x 1 pi pi 15M Jul 29 21:49 /home/pi/camiocam/cam/binaries/bin//ffmpeg

  While if I do the same on my macbook I get this output

  488 -r-xr-xr-x  1 john  admin   242K Jul 26 19:34 /usr/local/Cellar/ffmpeg/3.1.1/bin/ffmpeg

  To get shared library support I did the following

  # download and install libx264
  
  cd ~/ffmpeg_build
  
  git clone git://git.videolan.org/x264.git
  
  cd x264
  
  PATH="$HOME/bin:$PATH" ./configure --host=arm-unknown-linux-gnueabi  --prefix="$HOME/ffmpeg_build" --bindir="$HOME/bin" --enable-shared --disable-opencl
  
  # PATH="$HOME/bin:$PATH" make -j 8
  
  # PATH="$HOME/bin:$PATH" make install
  
  # ldconfig

  and ...

  # to install ffmpeg
  
  
  
  cd ~/ffmpeg_sources
  
  wget http://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2
  
  tar xjvf ffmpeg-snapshot.tar.bz2
  
  cd ffmpeg
  
  PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig" ./configure --prefix="$HOME/ffmpeg_build" --arch=armel --target-os=linux --extra-cflags="-I$HOME/ffmpeg_build/include" --enable-pic  --extra-ldflags="-L$HOME/ffmpeg_build/lib" --bindir="$HOME/bin" --enable-gpl --enable-libx264 --enable-nonfree --enable-shared
  
  PATH="$HOME/bin:$PATH" make -j 8

  Which gives this output

  License: nonfree and unredistributable
  
  Creating config.mak, config.h, and doc/config.texi...
  
  config.h is unchanged
  
  libavutil/avconfig.h is unchanged
  
  libavcodec/bsf_list.c is unchanged
  
  libavformat/protocol_list.c is unchanged
  
  CC      libavcodec/libx264.o
  
  POD     doc/ffprobe.pod
  
  POD     doc/ffmpeg-all.pod
  
  POD     doc/ffserver-all.pod
  
  POD     doc/ffmpeg.pod
  
  POD     doc/ffprobe-all.pod
  
  POD     doc/ffserver.pod
  
  MAN     doc/ffprobe.1
  
  MAN     doc/ffmpeg.1
  
  MAN     doc/ffserver.1
  
  MAN     doc/ffmpeg-all.1
  
  MAN     doc/ffprobe-all.1
  
  MAN     doc/ffserver-all.1
  
  GEN     libavcodec/libavcodec.ver
  
  LD      libavcodec/libavcodec.so.57
  
  AR      libavcodec/libavcodec.a
  
  LD      libavformat/libavformat.so.57
  
  LD      libavfilter/libavfilter.so.6
  
  LD      libavdevice/libavdevice.so.57
  
  library.mak:102: recipe for target 'libavdevice/libavdevice.so.57' failed
  
  make: *** [libavdevice/libavdevice.so.57] Killed
  
  make: *** Deleting file 'libavdevice/libavdevice.so.57'

  I’ve tried to add the --enable-pic flag to the ffmpeg configure command but that made no difference.

• FFMPEG : Video file to YUV conversion by binary ffmpeg and by code C++ give different results

  30 juin 2016, par Anny G

  Disclaimer : I have looked at the following question,
  FFMPEG : RGB to YUV conversion by binary ffmpeg and by code C++ give different results
  but it didn’t help and it is not applicable to me because I am not using SwsContext or anything.

  Following first few tutorials by http://dranger.com/ffmpeg/, I have created a simple program that reads a video, decodes it and then when the frame is decoded, it writes the raw yuv values to a file (no padding), using the data provided by AVFrame after we successfully decoded a frame. To be more specific, I write out arrays AVFrame->data[0], AVFrame->data[1] and AVFrame->data[2] to a file, i.e. I simply append Y values, then U values, then V values to a file. The file turns out to be of yuv422p format.

  When I convert the same original video to a raw yuv format using the ffmpeg(same version of ffmpeg) command line tool, the two yuv files are the same in size, but differ in content.

  FYI, I am able to play both of the yuv files using the yuv player, and they look identical as well.

  Here is the exact command I run to convert the original video to a yuv video using ffmpeg command line tool

   ~/bin/ffmpeg -i super-short-video.h264 -c:v rawvideo -pix_fmt yuv422p  "super-short-video-yuv422p.yuv"

  What causes this difference in bytes and can it be fixed ? Is there perhaps another way of converting the original video to a yuv using the ffmpeg tool but maybe I need to use different settings ?

  Ffmpeg output when I convert to a yuv format :

  ffmpeg version N-80002-g5afecff Copyright (c) 2000-2016 the FFmpeg developers
  
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
  
    configuration: --prefix=/home/me/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/me/ffmpeg_build/include --extra-ldflags=-L/home/me/ffmpeg_build/lib --bindir=/home/me/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --extra-cflags=-pg --extra-ldflags=-pg --disable-stripping
  
    libavutil      55. 24.100 / 55. 24.100
  
    libavcodec     57. 42.100 / 57. 42.100
  
    libavformat    57. 36.100 / 57. 36.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 45.100 /  6. 45.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, h264, from 'super-short-video.h264':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0:0: Video: h264 (High), yuv420p, 1280x720, 25 fps, 25 tbr, 1200k tbn
  
  [rawvideo @ 0x24f6fc0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
  Output #0, rawvideo, to 'super-short-video-yuv422p.yuv':
  
    Metadata:
  
      encoder         : Lavf57.36.100
  
      Stream #0:0: Video: rawvideo (Y42B / 0x42323459), yuv422p, 1280x720, q=2-31, 200 kb/s, 25 fps, 25 tbn
  
      Metadata:
  
        encoder         : Lavc57.42.100 rawvideo
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> rawvideo (native))
  
  Press [q] to stop, [?] for help
  
  frame=   50 fps=0.0 q=-0.0 Lsize=   90000kB time=00:00:02.00 bitrate=368640.0kbits/s speed=11.3x    
  
  video:90000kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%