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• cross compiling ffmpeg with conan fails : x86_64-w64-mingw32-ld : unrecognised emulation mode : 64

  6 février, par ovni jeroqui

  I'm trying to install ffmpeg (and some other libraries, but ffmpeg alone fails too) with conan to cross compile from linux (ubuntu) to windows.

  


  Conan throws an error on Running configure, inside build(). It says that x86_64-w64-mingw32-gcc is unable to create an executable file..

  


  On the config log I discovered it's because of a flag when running tests for x86_64-w64-mingw32-ld.

  


  x86_64-w64-mingw32-ld -m64 -L/home/jeroqui/.conan2/p/b/freetd8d522cfe5ed9/p/lib -L/home/jeroqui/.conan2/p/b/libsv9862cce477f3c/p/lib -L/home/jeroqui/.conan2/p/b/opensf32bb84148b27/p/lib -L/home/jeroqui/.conan2/p/b/vorbib2efb2d738443/p/lib -L/home/jeroqui/.conan2/p/b/libpn1c271e119251a/p/lib -L/home/jeroqui/.conan2/p/b/dav1d0798c06f2d7c3/p/lib -L/home/jeroqui/.conan2/p/b/libaoec0c6ff69236b/p/lib -L/home/jeroqui/.conan2/p/b/cpuin94c00ccfd6939/p/lib -L/home/jeroqui/.conan2/p/b/zlib09a824ccbeb0e/p/lib -L/home/jeroqui/.conan2/p/b/libwedcd84ab019a17/p/lib -L/home/jeroqui/.conan2/p/b/libfdbad6e447d67d4/p/lib -L/home/jeroqui/.conan2/p/b/libmpeb5a9a1a779c7/p/lib -L/home/jeroqui/.conan2/p/b/libvp0218afdff461c/p/lib -L/home/jeroqui/.conan2/p/b/libx2ec0d07d4a0565/p/lib -L/home/jeroqui/.conan2/p/b/libx23198ed0a549b9/p/lib -L/home/jeroqui/.conan2/p/b/opus8d5d63e1681f3/p/lib -L/home/jeroqui/.conan2/p/b/ogg813050272864b/p/lib -L/home/jeroqui/.conan2/p/b/openh3680a2c5cc945/p/lib -L/home/jeroqui/.conan2/p/b/openj09e5e15be595a/p/lib -L/home/jeroqui/.conan2/p/b/brotl58bc227a041f8/p/lib -L/home/jeroqui/.conan2/p/b/bzip2e67b6fd4c7720/p/lib -L/home/jeroqui/.conan2/p/b/libic229c7a1dc80e2/p/lib -L/home/jeroqui/.conan2/p/b/xz_ut8375de634122a/p/lib -m64 -o /tmp/ffconf.eAkkSIml/test.exe /tmp/ffconf.eAkkSIml/test.o
x86_64-w64-mingw32-ld: unrecognised emulation mode: 64
Supported emulations: i386pep i386pe
C compiler test failed.


  


  I've tried to get conan to not add the -m64 flag, but I haven't been able to get it working. Setting env variables like LDFLAGS= doesn't seam to work either on the conan profile, on the conanfile.py or directly on my terminal. Any suggestions ?

  


• How To Stream Video File Cross Browser On Same URL

  18 novembre 2015, par Qasim Khokhar

  I am trying to make Video Streaming Application, I have a controller which can stream mp4 video which is not working with Firefox.

  def get(self, request):
  
  
  
          filename = 'uploads/SampleVideo_1080x720_1mb.mp4' # Select your file here.
  
          wrapper = FileWrapper(file(filename))
  
          response = StreamingHttpResponse(wrapper, content_type='video/ogg; multipart/x-mixed-replace; boundary=frame')
  
          response['Content-Length'] = os.path.getsize(filename)
  
  
  
          return response

  if anyone can guide me to make it for different browsers ll be appreciated.

  actually i want to send stream encoding according to browser or client. dynamically. i am new in python.

  which technique is used by Youtube : how youtube serves videos on blob:https%3A//www.youtube.com/456e268f-bdfe-4ce7-8368-6b646a3ec5e8 what is blob :

• webp : validate the distance prefix code

  2 mars 2015, par Andreas Cadhalpun

  webp : validate the distance prefix code
  According to the WebP Lossless Bitstream Specification the highest
  
  allowed value for a prefix code is 39.
  If prefix_code is too large, the calculated extra_bits has an invalid
  
  value and triggers an assertion in get_bits.
  Signed-off-by : Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
  
  Signed-off-by : Anton Khirnov <anton@khirnov.net>
  

  • [DBH] libavcodec/webp.c