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• How do I set a relative path for an .SO file ?

  1er juillet 2015, par Eran Boudjnah

  This is my error :

  06-29 16:52:37.729 24144-24144/com.my.app E/AndroidRuntime﹕ FATAL
  EXCEPTION : main
  Process : com.my.app, PID : 24144
  java.lang.UnsatisfiedLinkError : dlopen failed : could not load library "build/obj/local/armeabi/libavformat.so" needed by
  "libFFmpegWrapper.so" ; caused by library
  "build/obj/local/armeabi/libavformat.so" not found

  build/obj/local/armeabi/libavformat.so looks wrong to me. The code worked with an earlier build of ffmpeg - so I suspect it’s something to do with the way I build ffmpeg.

  The libavformat.so file is in the APK where I’d expect it to be.

  This is my build script for ffmpeg :

  #!/bin/bash
  
  
  
  NDK=/Users/eran/Downloads/android-ndk-r10e
  
  PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64
  
  PLATFORM=$NDK/platforms/android-12/arch-arm
  
  PREFIX=/usr/local
  
  
  
  function build_one
  
  {
  
    ./configure --target-os=android --prefix=$PREFIX \
  
    --pkg-config=./fake-pkg-config \
  
    --enable-cross-compile \
  
    --cpu=armv7-a \
  
    --enable-shared \
  
    --disable-static \
  
    --disable-asm \
  
    --arch=arm \
  
    --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
  
    --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
  
    --disable-stripping \
  
    --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
  
    --sysroot=$PLATFORM \
  
    --disable-nonfree \
  
    --disable-version3 \
  
    --disable-everything \
  
    --enable-gpl \
  
    --disable-doc \
  
    --enable-avresample \
  
    --disable-demuxer=rtsp \
  
    --disable-muxer=rtsp \
  
    --disable-ffplay \
  
    --disable-ffserver \
  
    --enable-ffmpeg \
  
    --disable-ffprobe \
  
    --enable-libx264 \
  
    --enable-encoder=libx264 \
  
    --enable-decoder=h264 \
  
    --disable-protocol=rtp \
  
    --enable-hwaccels \
  
    --enable-zlib \
  
    --disable-devices \
  
    --disable-avdevice \
  
    --extra-cflags="-I/usr/local/include -fPIC -DANDROID -Wno-deprecated -mfloat-abi=softfp -mfpu=neon -march=armv7-a" \
  
    --extra-ldflags="-L/usr/local/lib -Wl,--fix-cortex-a8" \
  
    --extra-cxxflags='-Wno-multichar -fno-exceptions -fno-rtti'
  
    make -j4 install
  
  }
  
  
  
  build_one

• The HLS segment filename file path not incrementing

  30 mai 2023, par Rakesh L

  const ffmpegProcess = spawn(ffmpeg [
'-y','-i','/home/Documents/videotrans/video-transcoder/api/videoFiles/input/sample2.mp4',
'-s:v','1280x720',
'-b:v','2000000',
'-aspect','16:9',
'-b:a','64000',
'-r', '24',
'-s:v','854x480',
'-b:v','1000000',
'-aspect','16:9',
'-b:a', '112000',
'-r', '24',
'-s:v','640x360',
'-b:v','7000000',
'-aspect','16:9',
'-b:a','80000',
'-r', '24',
'-s:v','420x420',
'-b:v','600000',
'-aspect','16:9',
'-b:a','64000',
'-r', '24',
'-sc_threshold', '0',
'-map','0:0',
'-map','0:1',
'-map','0:0',
'-map','0:1',
'-map','0:0',
'-map','0:1',
'-map','0:0',
'-map','0:1',
'-ac','2',
'-ar','44100',
'-preset','slow',
'-var_stream_map','v:0,a:0 v:1,a:1 v:2,a:2 v:3,a:3',
'-f','hls',
'-hls_list_size','0',
'-master_pl_name','master.m3u8',
'-hls_segment_filename','/home/Documents/videotrans/video-transcoder/api/videoFiles/output/v%v/fileSequence~%03d.ts',
'/home/Documents/videotrans/video-transcoder/api/videoFiles/output/v%v/prog_index.m3u8'
]);


  


  Here I'm using the spawn of a child process of FFMPEG I need to transcode the video input into four different resolutions in m3u8 format. There will be master.m3u8 and folders v0, v1, v2, and v3 ; inside those folders, there should be pro_index.m3u8 file and multiple file-sequence files according to input file size

  


  The HLS segment filename is not incrementing properly So the process is failing

  


  how to increment fileSequence file names ?
fileSequence%d.ts or fileSequence%03d.ts in not work here

  


• Error with LocalAudioFile(file) returns OSError : [Errno 2] No such file or directory

  5 mars 2016, par beriukay

  Much like the question here http://developer.echonest.com/forums/thread/3843#reply, I am having the following error :

  File
  "/usr/local/lib/python2.7/dist-packages/echonest/remix/audio.py", line
  944, in init
  sampleRate=sampleRate, numChannels=numChannels) File "/usr/local/lib/python2.7/dist-packages/echonest/remix/audio.py", line
  403, in init
  self.load() File "/usr/local/lib/python2.7/dist-packages/echonest/remix/audio.py", line
  421, in load
  numChannels=self.numChannels, sampleRate=self.sampleRate, verbose=self.verbose) File
  "/usr/local/lib/python2.7/dist-packages/echonest/remix/support/ffmpeg.py",
  line 91, in ffmpeg
  close_fds=(not win) File "/usr/lib/python2.7/subprocess.py", line 710, in init
  errread, errwrite) File "/usr/lib/python2.7/subprocess.py", line 1327, in _execute_child
  raise child_exception OSError : [Errno 2] No such file or directory

  I checked input and output file permissions, made sure that both files and all related file paths existed, and that I have all the relevant python tools installed. The first clue is that Subprocess.py is having trouble. Looking at ffmpeg.py on line 88, I started playing around with the Popen function call to see how and why it was misbehaving.

  Solution :

  After messing around with the ffmpeg.py file, I piped the input to the shell (shell=True instead of shell=False), which raised the following error :

  check raise Run timeError(ffmpeg_install_instructions) RuntimeError: en-ffmpeg not found! Please make sure ffmpeg is installed and create a link as follows: sudo ln -s which ffmpeg /usr/local/bin/en-ffmpeg Alternatively, import echonest.remix.support.ffmpeg and modify ffmpeg.FFMPEG to name the appropriate binary.

  So, to finalize the solution, you need to get the binary from https://ffmpeg.org/download.html#build-linux, which in Ubuntu 14.04 means you just need to :

  sudo add-apt-repository ppa:mc3man/trusty-media
  
  sudo apt-get update && sudo apt-get upgrade
  
  sudo apt-get install ffmpeg
  
  sudo ln -s `which ffmpeg` /usr/local/bin/en-ffmpeg

  That should clear this problem right up.