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• Revision 6eec73a747 : Remove asm offset dependencies The obj_int_extract code is no longer worth main

  31 juillet 2014, par Johann

  Changed Paths :
   Delete /build/arm-msvs/obj_int_extract.bat

  
   Modify /build/make/Android.mk

  
   Modify /build/make/Makefile

  
   Modify /build/make/configure.sh

  
   Modify /build/make/gen_msvs_proj.sh

  
   Modify /build/make/gen_msvs_vcxproj.sh

  
   Modify /build/make/rtcd.pl

  
   Delete /build/x86-msvs/obj_int_extract.bat

  
   Modify /configure

  
   Modify /libs.mk

  
   Modify /solution.mk

  
   Modify /test/quantize_test.cc

  
   Modify /vp8/common/rtcd_defs.pl

  
   Delete /vp8/encoder/arm/armv5te/boolhuff_armv5te.asm

  
   Delete /vp8/encoder/arm/armv5te/vp8_packtokens_armv5.asm

  
   Delete /vp8/encoder/arm/armv5te/vp8_packtokens_mbrow_armv5.asm

  
   Delete /vp8/encoder/arm/armv5te/vp8_packtokens_partitions_armv5.asm

  
   Delete /vp8/encoder/arm/armv6/vp8_fast_quantize_b_armv6.asm

  
   Delete /vp8/encoder/arm/armv6/vp8_subtract_armv6.asm

  
   Delete /vp8/encoder/arm/boolhuff_arm.c

  
   Modify /vp8/encoder/bitstream.c

  
   Modify /vp8/encoder/bitstream.h

  
   Modify /vp8/encoder/encodeframe.c

  
   Modify /vp8/encoder/ethreading.c

  
   Modify /vp8/encoder/vp8_asm_enc_offsets.c

  
   Modify /vp8/vp8cx.mk

  
   Modify /vp8/vp8cx_arm.mk

  
   Modify /vpx_ports/arm_cpudetect.c

  
   Modify /vpx_scale/vpx_scale.mk

  
   Modify /vpx_scale/vpx_scale_asm_offsets.c

  
  
  Remove asm offset dependencies

  The obj_int_extract code is no longer worth maintaining. It creates
  significant issues when adapting for different build systems and no
  longer offers as significant of a performance benefit due to
  improvements in intrinsics.

  Source files will remain until the various third-party builds are updated.

  The neon fast quantizer has been moved to intrinsics. The armv6 version
  has been removed because so few remaining targets require it.

  Compilers and processors have improved significantly since the
  pack_tokens code was written. The assembly is no longer faster than the
  C code.

  pack_tokens were the only optimizations for the armv5te targets so the targets
  will be removed after the test infrastructure has been updated.

  BUG=710

  Change-Id : Ic785b167cd9f95eeff31c7c76b7b736c07fb30eb

• ffmpeg movies won't play in windows media player

  10 janvier 2015, par kjgregory

  I am trying to save some fairly simple matplotlib animations as movies in python. I’ve installed ffmpeg, but I don’t really know much about movie encoding and all of the other threads are way over my level of understanding. I’ve tried several different codecs and they all have the same problem.

  My problem is that my movies save and I can view them with VLC player, but not with windows media player. My friend seems to be able to play them too, but I’m not sure what hes using. Anyway, I was hoping someone could break it down for me in a simple way and tell me how to encode my movies so that they are playable on the broadest number of systems.

  Since I know someone is going to ask, here is my setup :
  Windows 7,
  matplotlib v1.4.2,
  python 2.7.9 32-bit,
  ffmpeg v. N-68625-g1728659

  Below is my code :
  the output of the print statements is :

  (7,30,3)

  96

          fig = plt.figure()
  
          ims = []
  
          metadata=dict(artist="SeaWizard",title=(self.codename.capitalize()+" "+self.typename.lower()+" sequence"))
  
          Writer = animation.writers['ffmpeg']
  
          writer = Writer(fps=60,metadata=metadata)
  
          dims = (np.shape(self.__baseimg)[0],np.shape(self.__baseimg)[1],3)
  
          prevdata = np.zeros(dims,np.uint8)
  
  
  
          for i in range(len(self.bright1)):
  
              data = self.__getimg(i)
  
              steps = int(self.speed[i]/5)
  
              for n in range(steps):
  
                  combdata = np.log((n*(data/steps) + (steps-n)*(prevdata/steps))+1)/np.log(self.__imgmax)
  
                  im = plt.imshow(combdata)
  
                  ims.append([im])
  
              prevdata = data
  
  
  
          print np.shape(combdata)
  
          print len(ims)
  
  
  
          anim = animation.ArtistAnimation(fig,ims,interval=16)
  
          anim.save('SeaWizardSimulation.mp4',writer=writer, extra_args=['-vcodec', 'lib264'])
  
          plt.show()

• Video generated with Jcodec does not work in IOS device

  6 avril 2023, par Fagun Thakkar

  I have developed application which generates video with the help of Jcodec. But generated videos does not play in ios.Anyone know reason behind it ?
Also anyone know any good alter native for genrating video which works fine in al systems.

  


  I have tried jcodec and ffmpeg.
fmpeg takes lot of time while generating videos.
So i need solution in either jcodec or good new library.