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• FFmpeg cross compile for Android fails with on C compiler test for x86_64

  5 novembre 2018, par nLL

  I am trying to cross compile FFmpeg for Android with NDK r16b
  I have manged to compile without any issues for all platforms but x86_64.

  Here is my compile script

          #!/bin/bash
  
  
  
  
  
  
  
      function build_one
  
      {
  
      ./configure \
  
      --prefix=$PREFIX \
  
      --enable-shared \
  
      --disable-static \
  
      --enable-pic \
  
      --enable-small \
  
      --disable-programs \
  
      --disable-symver \
  
      --target-os=android \
  
      --enable-cross-compile \
  
      --cross-prefix=$CROSS_PREFIX \
  
      --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
  
      --extra-ldflags="$ADDI_LDFLAGS" \
  
      --sysroot=$TOOLCHAIN/sysroot $ADDITIONAL_CONFIG_FLAG \
  
      --disable-all --disable-autodetect --disable-network --enable-pthreads \
  
      --enable-protocol=file --enable-protocol=pipe --enable-protocol=concat \
  
      --disable-all --disable-autodetect --disable-network --enable-pthreads \
  
      --enable-avcodec --enable-avformat --enable-swresample --enable-avfilter --enable-filter=aresample \
  
      --enable-parser=aac --enable-parser=aac_latm --enable-parser=flac --enable-parser=mpegaudio --enable-parser=vorbis \
  
      --enable-muxer=mp3,wav --enable-encoder=pcm*,libmp3lame --enable-nonfree --enable-gpl \
  
      --enable-jni --enable-mediacodec --enable-libmp3lame
  
  
  
  
  
      make -j4
  
      make install
  
      make distclean
  
      }
  
  
  
      HOME_PATH=/home/nll/Desktop
  
      CPU=x86_64
  
      TOOLCHAIN=$HOME_PATH/my_toolchains/x86_64
  
      CROSS_PREFIX=$TOOLCHAIN/bin/x86_64-linux-android-
  
      mkdir -p $(pwd)/android/$CPU
  
      PREFIX=$(pwd)/android/$CPU
  
      ADDI_CFLAGS="-march=x86-64 -I$INCLUDE_PATH"
  
      ADDI_LDFLAGS="-shared -L$LIBS_PATH"
  
      ADDITIONAL_CONFIG_FLAG="--arch=x86_64 --enable-x86asm"
  
      build_one

  Above script fails with

          WARNING: /home/nll/Desktop/my_toolchains/x86_64/bin/x86_64-linux-android-pkg-config not found, library detection may fail.
  
      mktemp -u XXXXXX
  
      5ZpQya
  
      test_ld cc
  
      test_cc
  
      BEGIN /tmp/ffconf.KWqViHoN/test.c
  
          1   int main(void){ return 0; }
  
      END /tmp/ffconf.KWqViHoN/test.c
  
      /home/nll/Desktop/my_toolchains/x86_64/bin/x86_64-linux-android-gcc --sysroot=/home/nll/Desktop/my_toolchains/x86_64/sysroot -Os -fpic -march=x86-64 -I -c -o /tmp/ffconf.KWqViHoN/test.o /tmp/ffconf.KWqViHoN/test.c
  
      /home/nll/Desktop/my_toolchains/x86_64/bin/x86_64-linux-android-gcc -shared -L --sysroot=/home/nll/Desktop/my_toolchains/x86_64/sysroot -o /tmp/ffconf.KWqViHoN/test /tmp/ffconf.KWqViHoN/test.o
  
      /home/nll/Desktop/my_toolchains/x86_64/bin/../lib/gcc/x86_64-linux-android/4.9.x/../../../../x86_64-linux-android/bin/ld: error: /tmp/ffconf.KWqViHoN/test.o: unsupported ELF file type 2
  
      collect2: error: ld returned 1 exit status
  
      C compiler test failed.

  So, error is "unsupported ELF file type 2" which means 64 bit. But, I am trying to build 64 bit library anyway.

  I do not understand what is the issue here. Can anyone give me some direction ?

• Using ffmpeg with MAMP local server

  22 mai 2012, par dirk_22

  In my MAMP local server home folder on Mac OS X (htdocs), I have a bunch of images (labeled image0 through image(n)) which I would like to stitch together into a jpeg using ffmpeg. When I type the following command into terminal, a .mpg file is successfully generated.

  ffmpeg -f image2 -i image%d.jpg videofile.mpg

  However, when I try to execute the same command using the php code pasted below, nothing seems to happen.

  <?php
  
  shell_exec('ffmpeg -f image2 -i image%d.jpg videofile.mpg');
  
  ?>

  I've copied the installed ffmpeg folder on my home directory into htdocs, but ffmpeg doesn't seem to be accessed. I'm very new to PHP, so please feel free to point out any gross errors in my code. I'd just like the php script to accomplish the same task which terminal executes upon input of the aforementioned command. I'd welcome any and all advice. Cheers.

• get metadata and download mp4 video link to server with ffmpeg

  17 mars 2019, par user892134

  I have the following directory in server /home/example.com/videos

  I want to download this video http://example.com/videos/video.mp4 into the directory.

  First how do i get metadata of http://example2.com/videos/video.mp4 ?

  Here is my command to download video, is it correct ?

  ffmpeg -i "http://example2.com/videos/video.mp4" -c copy "/home/example.com/videos/video2.mp4"

  Lastly, how do i determine if video has downloaded or didn’t finish downloading successfully ?