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• ffmpeg minimal requirements configuration for encoding and decoding h264 files

  14 novembre 2013, par TheSquad

  I'm trying to compile ffmpeg with minimal requirements in order to encode/decode with h264.

  So far my command line configuration is :

  ./configure --disable-yasm --disable-everything --enable-encoder=libx264 --enable-encoder=libfaac --enable-decoder=h264 --enable-muxer=h264 --enable-demuxer=h264 --enable-parser=h264 --enable-protocol=file

  once compiled, I try this :

  ./ffmpeg -i ~/Dropbox/TestFile.mov -vcodec libx264 test.mp4

  but I get an error :

    ffmpeg version N-58081-g2925571 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Nov 14 2013 15:49:58 with Apple LLVM version 5.0 (clang-500.2.76) (based on LLVM 3.3svn)
  
    configuration: --disable-yasm --disable-everything --enable-encoder=libx264 --enable-encoder=libfaac --enable-decoder=h264 --enable-muxer=h264 --enable-demuxer=h264 --enable-parser=h264 --enable-protocol=file
  
    libavutil      52. 52.100 / 52. 52.100
  
    libavcodec     55. 43.100 / 55. 43.100
  
    libavformat    55. 21.100 / 55. 21.100
  
    libavdevice    55.  5.100 / 55.  5.100
  
    libavfilter     3. 91.100 /  3. 91.100
  
    libswscale      2.  5.101 /  2.  5.101
  
    libswresample   0. 17.104 /  0. 17.104
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/mGs/Dropbox/TestFile.mov':
  
    Metadata:
  
      major_brand     : qt  
  
      minor_version   : 0
  
      compatible_brands: qt  
  
      creation_time   : 2013-06-23 14:33:09
  
      model           : iPhone 4S
  
      model-fra       : iPhone 4S
  
      encoder         : 6.0
  
      encoder-fra     : 6.0
  
      date            : 2013-06-23T16:33:09+0200
  
      date-fra        : 2013-06-23T16:33:09+0200
  
      make            : Apple
  
      make-fra        : Apple
  
    Duration: 00:00:42.09, start: 0.000000, bitrate: 20960 kb/s
  
      Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 20880 kb/s, 29.97 fps, 29.97 tbr, 600 tbn, 1200 tbc (default)
  
      Metadata:
  
        rotate          : 180
  
        creation_time   : 2013-06-23 14:33:09
  
        handler_name    : Core Media Data Handler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, 63 kb/s (default)
  
      Metadata:
  
        creation_time   : 2013-06-23 14:33:09
  
        handler_name    : Core Media Data Handler
  
  [NULL @ 0x7fd999802e00] Unable to find a suitable output format for 'test.mp4'
  
  test.mp4: Invalid argument

  This is probably coming from the fact that I have forgot something to enable on the ffmpeg configuration... But I can't found out what.

  The test file is a video got from iPhone 4S Camera.

• FFMPEG android very slow converting raw aac to mp3

  24 novembre 2013, par Feras

  I managed to compile ffmpeg for android from this repo :
  https://github.com/aksalj/ffmpeg-android
  So you can see the configuration options in here :
  https://github.com/aksalj/ffmpeg-android/blob/master/config.sh

  The only changes I did were to change the darwin-x86_54 to darwin-x86 since the new r9b NDK only comes with it and also change the androideabi-4.4.3 to androideabi-4.6 again because of the new NDK. I am encoding a raw ADTS aac to mp3, the decoder for aac is libav and encoder for mp3 is libmp3lame. Even though the process works a simple 5 minute aac files (44100, 2ch) is taking about 3 minutes to process. The same file on my mac (with the macports ffmpeg) takes a few seconds.

  I am not sure but are there any optimizations that can be made to the ffmpeg config script or maybe i need to compile ffmpeg with something like libaacplus(even though i think aacplus is used for encoding only, so shouldnt make a difference).Anyways any performance optimizations will be highly appreciated !

  The android device is a US Galaxy S3 (i747m model which has the Snapdragon S4).

• Permission denied when trying to call ffmpeg on heroku

  1er décembre 2013, par chuck w

  I have a rails 3.1 web app on Heroku (cedar) that that allows users to post stories with photo and video attachments using the paperclip gem (3.5.1). Uploads are stored on s3. This has been working 100% for many months.

  I have recently added video transcoding and thumbnailing to my dev machine with the paperclip-ffmpeg gem (1.0.1) and ffmpeg running locally. This is also working.

  I've followed these instructions to build and install ffmpeg on heroku, and I've altered my Heroku app's path so that it reads as follows :

  PATH:   bin:vendor/ffmpeg/bin:vendor/bundle/ruby/1.9.1/bin:/usr/local/bin:/usr/bin:/bin

  and my app's LD_LIBRARY_PATH so that it reads as follows :

  LD_LIBRARY_PATH:             vendor/ffmpeg/lib:/usr/local/lib

  Finally, I've vendored ffmpeg into my app with the following structure :

  

  When I commit and push these changes to Heroku and POST a story that has a video I get the following output on Heroku logs :

  2013-11-30T22:51:46.711010+00:00 app[web.1]: Started POST "/stories" for 71.80.218.93 at        
  
  2013-11-30 22:51:46 +0000
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: Cocaine::ExitStatusError (Command 'ffprobe 
  
  "/tmp/sideways video20131130-2-14w1q4j.mp4" 2>&1' returned 126. Expected 0
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: Here is the command output:
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: 
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]:   app/controllers/stories_controller.rb:11:in     
  
  `create'
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: 
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: 
  
  2013-11-30T22:51:47.019228+00:00 heroku[router]: at=info method=POST path=/stories     
  
  host=myapp.herokuapp.com fwd="71.80.218.93" dyno=web.1 connect=1ms    
  
  service=3130ms status=500 bytes=754
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: 
  
  2013-11-30T22:51:47.023600+00:00 app[web.1]: cache: [POST /stories] invalidate, pass
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: sh: ffprobe: Permission denied
  
  2013-11-30T22:51:47.023119+00:00 app[web.1]: ):

  Also, running the console command : heroku run "ffmpeg -version" -a myapp
  returns :

  Running ffmpeg -version attached to terminal... up, run.6591
  
  bash: vendor/ffmpeg/bin/ffmpeg: Permission denied

  Here is my Post model paperclip set-up :

  class Post < ActiveRecord::Base
  
  
  
    attr_accessible :contents, :photo, :video
  
  
  
    belongs_to    :story, :touch => true
  
    belongs_to    :user, :touch => true
  
  
  
    has_attached_file :photo, 
  
                      :styles => { 
  
                        :thumb => ["100x140>", :jpg],
  
                        :medium => ["400x400>", :jpg],
  
                        :large => ["800x800>", :jpg]
  
                      },
  
                      :processors => [:thumbnail],
  
                      :storage => :s3,
  
                      :s3_credentials => "#{Rails.root.to_s}/config/s3.yml",
  
                      :path => "/:style/:id/:filename"
  
  
  
    has_attached_file :video, 
  
                      :storage => :s3,
  
                      :s3_credentials => "#{Rails.root.to_s}/config/s3.yml",
  
                      :path => "/video/:id/:filename",
  
                      :styles => {
  
                        :thumb => { :geometry => "140x100#", :format => 'jpg', :time => 10 },
  
                        :medium => { :geometry => "480x360", :format => 'mp4' },
  
                      }, :processors => [:ffmpeg]

  Why am I getting these "permission denieds" ? Any help would be greatly appreciated !!!