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• The system cannot find the file specified with ffmpeg

  15 mai 2024, par Samhita vempatti

  In the process of using the ffmpeg module to edit video files i used the subprocess module

  



  The code is as follows :

  



  #trim bit

import subprocess
import os
seconds = "4"
mypath=os.path.abspath('trial.mp4')
subprocess.call(['ffmpeg', '-i',mypath, '-ss', seconds, 'trimmed.mp4'])


  



  Error message :

  



  Traceback (most recent call last):&#xA;  File "C:\moviepy-master\resizer.py", line 29, in <module>&#xA;    subprocess.call([&#x27;ffmpeg&#x27;, &#x27;-i&#x27;,mypath, &#x27;-ss&#x27;, seconds, &#x27;trimmed.mp4&#x27;])&#xA;  File "C:\Python27\lib\subprocess.py", line 168, in call&#xA;    return Popen(*popenargs, **kwargs).wait()&#xA;  File "C:\Python27\lib\subprocess.py", line 390, in __init__&#xA;    errread, errwrite)&#xA;  File "C:\Python27\lib\subprocess.py", line 640, in _execute_child&#xA;    startupinfo)&#xA;WindowsError: [Error 2] The system cannot find the file specified&#xA;</module>

  



  After looking up similar problems i understood that the module is unable to pick the video file because it needs its path, so i took the absolute path. But in spite of that the error still shows up.
The module where this code was saved and the video file trial.mp4 are in the same folder.

  


• run build.sh file not generating so files

  11 décembre 2017, par Shivani Vasundhara

  I am using this example of FFMpegExample for making Live wallpaper using mp4, I am using Windows 10, cygwin,16.0 NDK version and client version 1.3.7 to 1.3.10 of ffmpeg, I have successfully extracted it using extract.sh.

  Now my problem is when I run the build.sh command I am getting the error message below (see end of the question), but not making .so files.

  My build.sh file is :

  #!/bin/bash
  
  
  
  if [ "$NDK" = "" ]; then
  
  echo NDK variable not set, assuming $ANDROID_HOME
  
  export NDK=$ANDROID_HOME
  
  fi
  
  
  
  SYSROOT=$ANDROID_SYSROOT
  
  # Expand the prebuilt/* path into the correct one
  
  TOOLCHAIN=`echo $ANDROID_TOOLCHAIN`
  
  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 --arch=arm"
  
  FLAGS="$FLAGS --cross-prefix=arm-linux-androideabi- --arch=arm"
  
  FLAGS="$FLAGS --sysroot=$SYSROOT"
  
  #FLAGS="$FLAGS --soname-prefix=/data/data/ffvideolivewallpaper.frankandrobot.com/lib/"
  
  #FLAGS="$FLAGS --enable-version3 --enable-gpl"
  
  #FLAGS="$FLAGS --enable-version3 --enable-gpl --enable-nonfree"
  
  FLAGS="$FLAGS --disable-ffmpeg --disable-ffplay"
  
  FLAGS="$FLAGS --disable-ffserver --disable-ffprobe --disable-encoders"
  
  FLAGS="$FLAGS --disable-muxers --disable-devices --disable-protocols"
  
  FLAGS="$FLAGS --enable-protocol=file --enable-avfilter"
  
  FLAGS="$FLAGS --disable-network"
  
  FLAGS="$FLAGS --disable-avdevice --disable-asm"
  
  FLAGS="$FLAGS --enable-shared --disable-symver"
  
  FLAGS="$FLAGS --enable-small"
  
  FLAGS="$FLAGS --disable-doc"
  
  #FLAGS="$FLAGS --optimization-flags=-O2"
  
  
  
  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"
  
  
  
  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
  
  make clean
  
  make -j4 || exit 1
  
  make install || exit 1
  
  
  
  done

  In $ANDROID_HOME is system environment variable defined to ndk-bundle path,
  $ANDROID_SYSROOT points : $ANDROID_HOME\platforms\android-27\arch-arm
  $ANDROID_TOOLCHAIN points : $ANDROID_HOME\toolchains\arm-linux-androideabi-4.9\prebuilt\windows-x86_64

  And when i run ./build.sh file in Cygwin I am getting this message :

  NDK variable not set, assuming D :\sdk\ndk-bundle
  arm-linux-androideabi-gcc is unable to create an executable file.
  C compiler test failed.

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

  See screenshot of error message.

  Any kind of help is appreciated.

• System.load() is not loading the .so files though they are there

  22 février 2018, par Anuran Barman

  I am trying to load FFMPEG .so files from the /files folder of the application but System.load() is not loading them. My code look like this below :

  static {
  
          try {
  
              String[] libs={
  
                      App.getInstance().getFilesDir().getAbsolutePath()+"/sharedLibs/libavfilter.so",
  
                      App.getInstance().getFilesDir().getAbsolutePath()+"/sharedLibs/libswscale.so",
  
                      App.getInstance().getFilesDir().getAbsolutePath()+"/sharedLibs/libavformat.so",
  
                      App.getInstance().getFilesDir().getAbsolutePath()+"/sharedLibs/libffmpeg-jni.so",
  
                      App.getInstance().getFilesDir().getAbsolutePath()+"/sharedLibs/libswresample.so",
  
                      App.getInstance().getFilesDir().getAbsolutePath()+"/sharedLibs/libavutil.so",
  
                      App.getInstance().getFilesDir().getAbsolutePath()+"/sharedLibs/libavcodec.so"
  
              };
  
              for(int i=0;icode>

  If I remove them android studio logcat says library file not found specifying the exact location like /data/0/emulated/myPKGName/files/sharedLibs/.so so it is loading the so files but if I provide them it still shows UnsatisfiedLinkError error, like below :

  java.lang.UnsatisfiedLinkError: dlopen failed: library "libswscale.so" not found

  Why is it in turn searching for libswrescale.so file though that is already loaded from files folder ?