Recherche avancée

Sur d’autres sites (5849)

• Identifying Audio bit rate using FFMPEG

  28 mai 2013, par user1756535

  I'm using FFMPEG to identify the bit rate of an audio file in my Rails app. I am downloading the file from S3, and storing temporarily in the tmp folder, then running FFMPEG commands against it.

  Locally everything is running absolutely as expected. The problem comes when deploying, and I get nothing returned from FFMPEG.

  s3 = AWS::S3.new(
  
  :access_key_id => ENV["AWS_ACCESS_KEY_ID"],
  
  :secret_access_key => ENV["AWS_SECRET_ACCESS_KEY"])
  
  
  
  object = s3.buckets[ENV["AWS_S3_BUCKET"]].objects[CGI::unescape(self.url)]
  
  
  
  tempname = Digest::MD5.hexdigest(DateTime.now.to_s) + "." + self.file_format
  
  File.open(Rails.root.to_s + '/tmp/' + tempname, 'wb') do |f|
  
      f.write(object.read)
  
  end
  
  
  
  dl = Rails.root.to_s + '/tmp/' + tempname
  
  brcommand = "ffmpeg -i " + dl + " 2>&1 | grep Duration | sed 's/Duration: \(.*\), start/\1/g'"
  
  ffmpeg = %x{#{brcommand}}

  I am using %xffmpeg_command to access the command line, so I'm wandering whether that may be causing the problem where it is not finding the file as if it had been running natively in Rails.

  I have used FFMPEG on the command line on the server, so I know it is working fine.

• FFMPEG compile with x264 support for Android

  10 mars, par Pecana

  I am trying to build ffmpeg extensions for media3 (ExoPlayer) for Android

  


  https://github.com/androidx/media/tree/release/libraries/decoder_ffmpeg

  


  Using the default settings everything is fine but if I try to add support to libx264 the build failed. I compiled x264 for Android locally and it worked so the .so file for arm64 is present, I added it to the pkg-config with :

  


  export PKG_CONFIG_PATH=/build/x264/arm64/lib/pkgconfig:$PKG_CONFIG_PATH

  


  but when I try to build ffmpeg with the following command it fails :

  


  ./configure \
--prefix=/build/ffmpeg \
--enable-gpl \
--enable-libx264 \
--enable-static \
--enable-pic \
--arch=arm64 \
--target-os=android \
--cross-prefix=$TOOLCHAIN/bin/aarch64-linux-android21- \
--sysroot=$SYSROOT


  


  Error : ERROR : x264 not found using pkg-config

  


  But it is not due to pkg-config as the command :

  


  pkg-config --cflags --libs x264


  


  reports : -DX264_API_IMPORTS -I/build/x264/arm64/include -L/build/x264/arm64/lib -lx264

  


  Any idea on how to fix it ?

  


  Thank you :-)

  


• FFMPEG compile with x264 support for Android

  10 mars, par Pecana

  I am trying to build ffmpeg extensions for media3 (ExoPlayer) for Android

  


  https://github.com/androidx/media/tree/release/libraries/decoder_ffmpeg

  


  Using the default settings everything is fine but if I try to add support to libx264 the build failed. I compiled x264 for Android locally and it worked so the .so file for arm64 is present, I added it to the pkg-config with :

  


  export PKG_CONFIG_PATH=/build/x264/arm64/lib/pkgconfig:$PKG_CONFIG_PATH

  


  but when I try to build ffmpeg with the following command it fails :

  


  ./configure \
--prefix=/build/ffmpeg \
--enable-gpl \
--enable-libx264 \
--enable-static \
--enable-pic \
--arch=arm64 \
--target-os=android \
--cross-prefix=$TOOLCHAIN/bin/aarch64-linux-android21- \
--sysroot=$SYSROOT


  


  Error : ERROR : x264 not found using pkg-config

  


  But it is not due to pkg-config as the command :

  


  pkg-config --cflags --libs x264


  


  reports : -DX264_API_IMPORTS -I/build/x264/arm64/include -L/build/x264/arm64/lib -lx264

  


  Any idea on how to fix it ?

  


  Thank you :-)