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• Compile FFmpeg with librtmp ERROR : librtmp not found

  10 juin 2014, par 谢小进

  Environment : Mac OS X 10.9.2, Xcode 5.1.

  I have compiled librtmp, libogg and libspeex successfully, they are in the directories named fat-librtmp, fat-libogg and fat-libspeex , then I run the shell script as below to coompile them into FFmpeg :

  #!/bin/sh
  
  
  
  # OS X Mavericks, Xcode 5.1
  
  
  
  set -ex
  
  
  
  VERSION="2.2.2"
  
  CURRPATH=`pwd`
  
  DSTDIR="ffmpeg-built"
  
  SCRATCH="scratch"
  
  LIBRTMP=$CURRPATH/librtmp
  
  ARCHS="i386 x86_64 armv7 armv7s arm64"
  
  
  
  CONFIGURE_FLAGS="--enable-shared \
  
                  --disable-doc \
  
                  --disable-stripping \
  
                  --disable-ffmpeg \
  
                  --disable-ffplay \
  
                  --disable-ffserver \
  
                  --disable-ffprobe \
  
                  --disable-decoders \
  
                  --disable-encoders \
  
                  --disable-protocols \
  
                  --enable-protocol=file \
  
                  --enable-protocol=rtmp \
  
                  --enable-librtmp \
  
                  --enable-encoder=flv \
  
                  --enable-decoder=flv \
  
                  --disable-symver \
  
                  --disable-asm \
  
                  --enable-cross-compile"
  
  
  
  rm -rf $DSTDIR
  
  mkdir $DSTDIR
  
  
  
  if [ ! `which yasm` ]; then
  
      if [ ! `which brew` ]; then
  
          ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
  
      fi
  
      brew install yasm
  
  fi
  
  
  
  if [ ! `which gas-preprocessor.pl` ]; then
  
      curl -3L https://github.com/libav/gas-preprocessor/raw/master/gas-preprocessor.pl -o /usr/local/bin/gas-preprocessor.pl
  
      chmod +x /usr/local/bin/gas-preprocessor.pl
  
  fi
  
  
  
  if [ ! -e ffmpeg-$VERSION.tar.bz2 ]; then
  
      curl -O http://www.ffmpeg.org/releases/ffmpeg-$VERSION.tar.bz2
  
  fi
  
  
  
  tar jxf ffmpeg-$VERSION.tar.bz2
  
  
  
  
  
  export PKG_CONFIG_PATH="/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH"
  
  export LD_LIBRARY_PATH="/usr/local/lib:$LD_LIBRARY_PATH"
  
  
  
  for ARCH in $ARCHS; do
  
      mkdir -p $DSTDIR/$SCRATCH/$ARCH
  
      cd $DSTDIR/$SCRATCH/$ARCH
  
  
  
      CFLAGS="-arch $ARCH"
  
      if [ $ARCH == "i386" -o $ARCH == "x86_64" ]; then
  
          PLATFORM="iPhoneSimulator"
  
          CFLAGS="$CFLAGS -mios-simulator-version-min=6.0"
  
      else
  
          PLATFORM="iPhoneOS"
  
          CFLAGS="$CFLAGS -mios-version-min=6.0"
  
          if [ $ARCH == "arm64" ]; then
  
              EXPORT="GASPP_FIX_XCODE5=1"
  
          fi
  
      fi
  
  
  
      XCRUN_SDK=`echo $PLATFORM | tr '[:upper:]' '[:lower:]'`
  
      CC="xcrun -sdk $XCRUN_SDK clang"
  
      CFLAGS="$CFLAGS -I$LIBRTMP/include"
  
      CXXFLAGS="$CFLAGS"
  
      LDFLAGS="$CFLAGS -L$LIBRTMP/lib"
  
  
  
      $CURRPATH/ffmpeg-$VERSION/configure \
  
      --target-os=darwin \
  
      --arch=$ARCH \
  
      --cc="$CC" \
  
      $CONFIGURE_FLAGS \
  
      --extra-cflags="$CFLAGS" \
  
      --extra-cxxflags="$CXXFLAGS" \
  
      --extra-ldflags="$LDFLAGS" \
  
      --prefix=$CURRPATH/$DSTDIR/$ARCH
  
  
  
      make -j3 install $EXPORT
  
  
  
      cd $CURRPATH
  
  done
  
  
  
  rm -rf $DSTDIR/$SCRATCH
  
  mkdir -p $DSTDIR/lib
  
  cd $DSTDIR/$ARCH/lib
  
  LIBS=`ls *.a`
  
  cd $CURRPATH
  
  
  
  for LIB in $LIBS; do
  
      lipo -create `find $DSTDIR -name $LIB` -output $DSTDIR/lib/$LIB
  
  done
  
  
  
  cp -rf $DSTDIR/$ARCH/include $DSTDIR
  
  
  
  for ARCH in $ARCHS; do
  
      rm -rf $DSTDIR/$ARCH
  
  done

  Unluckily, the config.log shows :

  check_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
  
  pkg-config --exists --print-errors librtmp
  
  Package librtmp was not found in the pkg-config search path.
  
  Perhaps you should add the directory containing `librtmp.pc'
  
  to the PKG_CONFIG_PATH environment variable
  
  No package 'librtmp' found
  
  ERROR: librtmp not found

  I have googled and knew that configure contains a line enabled librtmp  && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket, which maybe be wrong. Right ? Can somebody help me to solve it ?

  UPDATE at 2014/06/10

  I think it’s about pkgconfig or something, so I have create a file named librtmp.pc at /usr/local/lib/pkgconfig, which contains below text :

  prefix=/usr/local/librtmp
  
  exec_prefix=${prefix}
  
  libdir=${prefix}/lib
  
  includedir=${prefix}/include
  
  
  
  Name: librtmp
  
  Description: RTMP implementation
  
  Version: v2.3
  
  Requires:
  
  URL: http://rtmpdump.mplayerhq.hu
  
  Libs: -L${libdir} -lrtmp -lz
  
  Cflags: -I${includedir}

  Also I have moved built librtmp to /usr/local. After above being done, I run the shell script again, but still same error ! Can somebody told me why and how to solve it ?

• Command work, but have a error when used by sh [on hold]

  6 mai 2014, par DrakaSAN

  I have this script :

  extract.sh :

  ffmpeg –i $1 –ss $2 –t $3 –c:v copy –c:a copy $4

  If I type

  ffmpeg –i full.mp4 –ss 114 –t 30 –c:v copy –c:a copy out.mp4

  All go well. But if I try

  sh extract.sh full.mp4 114 30 out.mp4

  I get :

  ffmpeg version 2.1 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on May  5 2014 11:41:48 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)
  
    configuration: --enable-gpl
  
    libavutil      52. 48.100 / 52. 48.100
  
    libavcodec     55. 39.100 / 55. 39.100
  
    libavformat    55. 19.104 / 55. 19.104
  
    libavdevice    55.  5.100 / 55.  5.100
  
    libavfilter     3. 90.100 /  3. 90.100
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
    libpostproc    52.  3.100 / 52.  3.100
  
  [NULL @ 0x2a20b00] Unable to find a suitable output format for '–i'
  
  –i: Invalid argument

  What does sh do to the argument to make it unreadable in the script ?

  EDIT :

  user@domain:~/test$ sh extract.sh cdr.mp4 0 7 generique.mp4
  
  ffmpeg –i cdr.mp4 –ss 0 –t 7 –c:v copy –c:a copy generique.mp4

• Revision 81ad047ee5 : VP8 for ARMv8 by using NEON intrinsics 06 Add idct_dequant_full_2x_neon.c - idc

  17 décembre 2013, par James Yu

  Changed Paths :
   Delete /vp8/common/arm/neon/idct_dequant_full_2x_neon.asm

  
   Add /vp8/common/arm/neon/idct_dequant_full_2x_neon.c

  
   Modify /vp8/vp8_common.mk

  
  
  VP8 for ARMv8 by using NEON intrinsics 06

  Add idct_dequant_full_2x_neon.c
   idct_dequant_full_2x_neon

  ==== Summary of apply VP8 decode patch series ====
  Benchmark on Samsung Chromebook, Cortex-A15, 1.7GHz, Dual core
  Toolchain : linaro-1.13.1-4.8-2014.01
  Compile argument : CROSS=arm-linux-gnueabihf- ../libvpx/configure
  —target=armv7-linux-gcc —prefix=$HOME/out
  —enable-shared —cpu=cortex-a7
  Test argument : vpxdec —summary —noblit ./tears_of_steel_1080p.webm

  NEON assembly 46.68 (fps)
  Apply patch 06 46.65, -0.03
  Apply patch 07 46.86, +0.21
  Apply patch 08 46.58, -0.28
  Apply patch 09 46.57, -0.01
  Apply patch 10 46.51, -0.06
  Apply patch 11 46.13, -0.38
  Apply patch 12 45.42, -0.71
  Apply patch 13 46.06, +0.64
  Apply patch 14 45.19, -0.87
  Apply patch 15 45.93, +0.74
  Apply patch 16 45.48, -0.45
  Apply patch 17 45.84, +0.36
  Apply patch 18 45.91, +0.07 <= With all NEON intrinsics patches
  Total -0.77 fps, 1.65% performance regression

  Change-Id : I77bfc9eaccfb97b8d401e949ceff8795e26ca6b7
  Signed-off-by : James Yu <james.yu@linaro.org>