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• how to encode mp4 from movie content for wowza streaming ?

  15 juillet 2014, par lng0415

  i want to encode to mp4(h.264 codec) from avi,mpg..... for wowza streaming.

  encode mp4 using ffmpeg, jave.

  encode is success, but wowza streaming is not work on android and iphone OS.
  (it’s play successfully on my PC)

  please help me.

  thank you.

  ps. i’m sorry. i’m poor at english.

  [using jave]

  File source = new File("D://temp/20140704_163504.mp4");
  
  File target = new File("D://temp/jave.mp4");
  
  
  
  AudioAttributes audio = new AudioAttributes();
  
  audio.setCodec("libmp3lame");
  
  audio.setBitRate(new Integer(64000));
  
  audio.setChannels(new Integer(1));
  
  audio.setSamplingRate(new Integer(22050));
  
  
  
  VideoAttributes video = new VideoAttributes();
  
  video.setCodec("h263");
  
  video.setBitRate(new Integer(320000));
  
  video.setFrameRate(new Integer(15));
  
  video.setSize(new VideoSize(400, 300));
  
  
  
  EncodingAttributes attrs = new EncodingAttributes();
  
  attrs.setFormat("mp4");
  
  attrs.setAudioAttributes(audio);
  
  attrs.setVideoAttributes(video);
  
  Encoder encoder = new Encoder();
  
  encoder.encode(source, target, attrs);

• Revision 29e1b1a4b0 : tests : add API_REGISTER_STATE_CHECK used to wrap API functions to ensure full e

  10 juillet 2014, par James Zern

  Changed Paths :
   Modify /test/convolve_test.cc

  
   Modify /test/dct16x16_test.cc

  
   Modify /test/dct32x32_test.cc

  
   Modify /test/decode_test_driver.cc

  
   Modify /test/encode_test_driver.cc

  
   Modify /test/fdct4x4_test.cc

  
   Modify /test/fdct8x8_test.cc

  
   Modify /test/idct_test.cc

  
   Modify /test/intrapred_test.cc

  
   Modify /test/partial_idct_test.cc

  
   Modify /test/pp_filter_test.cc

  
   Modify /test/register_state_check.h

  
   Modify /test/sad_test.cc

  
   Modify /test/sixtap_predict_test.cc

  
   Modify /test/subtract_test.cc

  
   Modify /test/variance_test.cc

  
  
  tests : add API_REGISTER_STATE_CHECK

  used to wrap API functions to ensure full environment consistency as
  opposed to the renamed ASM_REGISTER_STATE_CHECK which is used with
  assembly functions.
  currently checks the FPU tag word in x86/x86_64 gcc builds to ensure
  emms has been called.

  Change-Id : Ie241772dbf903d33d516a1add4c8c6783f2e1490

• Split a movie so that each GIF is under a certain file size

  9 novembre 2014, par Terence Eden

  Problem

  I want to convert a long movie into a series on animated GIFs.

  Each GIF needs to be <5MB.

  Is there any way to determine how large a GIF will be while it is being encoded ?

  Progress So Far

  I can split the movie into individual frames :

  ffmpeg -i movie.ogv -r 25 frameTemp.%05d.gif

  I can then use convert from ImageMagick to create GIFs. However, I can’t find a way to determine the likely file size before running the command.

  Alternatively, I can split the movie into chunks :

  ffmpeg -i movie.ogv -vcodec copy -ss 00:00:00 -t 00:20:00 output1.ogv

  But I’ve no way of knowing if, when I convert the file to a GIF it will be under 5MB.

  A 10 second scene with a lot of action may be over 5MB (bad !) and a static scene could be under 5MB (not a problem, but not very efficient).

  Ideas

  I think that what I want to do is convert the entire movie into a GIF, then find a way to split it by file size.

  Looking at ImageMagick, I can split a GIF into frames, but I don’t see a way to split it into animated GIFs of a certain size / length.

  So, is this possible ?