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• create short movie from images and save into mp4 or 3gp format android

  6 juin 2014, par new Project

  I want to make short movie clip from several images. I google very much but got only one answer that to use FFMPEG

  I have tried to compile that native library from ndk-r8 using cygwin in windows 7 but nothing happens and shows compile error.

  I have also try to compile and run github projects github.com/guardianproject/android-ffmpeg and github.com/appunite/AndroidFFmpeg but it also unsucessful.

  when i’ve read projects descriptions then someone told that its only working in linux or mac but i think its not the problem beacause i am using cygwin that used for linux on windows.

  In compiling i’ve got errors like prebuild library not found and something files not found.

  Is there any solution by someone or have compiled library that helps me a lot. Please suggest me some working tutorial or example that saves my lots of days.

  Thanks,.

• Revision 33df6d1fc1 : Save NEON registers in VP8 NEON functions The recent compiler can generate opti

  28 avril 2014, par Yunqing Wang

  Changed Paths :
   Modify /vp8/common/arm/neon/buildintrapredictorsmby_neon.asm

  
   Modify /vp8/common/arm/neon/idct_dequant_0_2x_neon.asm

  
   Modify /vp8/common/arm/neon/idct_dequant_full_2x_neon.asm

  
   Modify /vp8/common/arm/neon/loopfilter_neon.asm

  
   Modify /vp8/common/arm/neon/loopfiltersimplehorizontaledge_neon.asm

  
   Modify /vp8/common/arm/neon/loopfiltersimpleverticaledge_neon.asm

  
   Modify /vp8/common/arm/neon/mbloopfilter_neon.asm

  
   Modify /vp8/common/arm/neon/sad16_neon.asm

  
   Modify /vp8/common/arm/neon/sad8_neon.asm

  
   Modify /vp8/common/arm/neon/shortidct4x4llm_neon.asm

  
   Modify /vp8/common/arm/neon/sixtappredict16x16_neon.asm

  
   Modify /vp8/common/arm/neon/sixtappredict4x4_neon.asm

  
   Modify /vp8/common/arm/neon/sixtappredict8x4_neon.asm

  
   Modify /vp8/common/arm/neon/sixtappredict8x8_neon.asm

  
   Modify /vp8/common/arm/neon/variance_neon.asm

  
   Modify /vp8/common/arm/neon/vp8_subpixelvariance16x16_neon.asm

  
   Modify /vp8/common/arm/neon/vp8_subpixelvariance16x16s_neon.asm

  
   Modify /vp8/common/arm/neon/vp8_subpixelvariance8x8_neon.asm

  
   Modify /vp8/encoder/arm/neon/subtract_neon.asm

  
   Modify /vp8/encoder/arm/neon/vp8_memcpy_neon.asm

  
   Modify /vp8/encoder/arm/neon/vp8_mse16x16_neon.asm

  
  
  Save NEON registers in VP8 NEON functions

  The recent compiler can generate optimized code that uses NEON registers
  for various operations besides floating-point operations. Therefore,
  only saving callee-saved registers d8 - d15 at the beginning of the
  encoder/decoder is not enough anymore. This patch added register saving
  code in VP8 NEON functions that use those registers.

  Change-Id : Ie9e44f5188cf410990c8aaaac68faceee9dffd31

• Save RTP vp8 payload packets to .webm file

  3 octobre 2017, par Ibrahim

  I have saved a video call to a .pcap file with Wireshark, and I want to acquire the video from RTP packets. RTP packets payload type is vp8, I could find out the vp8 RTP packets by using libpcap library in C++. Then I saved the contents of all RTP vp8 packets to a file. But i can not convert this raw vp8 data to .mp4 by using ffmpeg. ffmpeg gives error during conversion. ffmpeg conversion error : Invalid data found when processing input

  What are the steps to get .mp4 or .webm video file from vp8 RTP packets ?

  Edit : I could get raw VP8 data excluding VP8 payload descriptor, payload header and keyframe header. Then I added ivf header and frame header for each vp8 raw frame, according to ivf document
  IVF Document

  But When I want to convert my ivf file (output1) to output1.mp4 by using ffmpeg

  ffmpeg -i output1 -c:v vp8 output1.mp4

  I get errors