Recherche avancée

Sur d’autres sites (7125)

• configure : Don’t add -fPIC on windows targets

  5 juin 2013, par Martin Storsjö

  configure : Don’t add -fPIC on windows targets
  This avoids warnings about this option not having any effect on
  
  this platform.
  We still want to enable the pic configure item for these platforms
  
  (if detected via the compiler builtin define __PIC__) to get proper
  
  inline assembly workarounds.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] configure

• Retrieving stdout from subprocess in Windows

  6 août 2017, par Cryptite

  I can call FFmpeg with subprocess.Popen and retrieve the data I need, as it occurs (to get progress), but only in console. I’ve looked around and seen that you can’t get the data "live" when running with pythonw. Yet, waiting until the process finishes to retrieve the data is moot, since I’m trying to wrap a PyQT GUI around FFmpeg so I can have pretty progress bars and whatnot. So the question is, can you retrieve "live" data from a subprocess call when using pythonw ?

  I haven’t tried simply compiling the application with py2exe yet as a windows application, would that fix the problem ?

• FFmpeg libraries on Windows - Undefined References

  26 novembre 2018, par Gomes

  I am trying to use FFmpeg libraries available from here under Windows 10 (64 bits). I downloaded version=20181126-90ac0e5, architecture=Windows-64, Linking=Dev. There are 3 folders inside that FFmpeg folder : examples, lib and include.
  To use these libraries I copied the contents of the "include" folder to the "include" folder of my MinGW installation. I also copied the contents of the "lib" folder to the "lib" folder of MinGW.
  I try to compile the decode_video.c example that comes inside the examples folder with the following way :

   gcc decode_video.c -o decode_video.exe -lavcodec -lavutil -lavformat -lm

  The compiler gives me these undefined references :

   undefined reference to `avcodec_send_packet'
  
   undefined reference to `avcodec_receive_frame'
  
   undefined reference to `av_packet_alloc'
  
   undefined reference to `avcodec_find_decoder'
  
   undefined reference to `av_parser_init'
  
   undefined reference to `avcodec_alloc_context3'
  
   undefined reference to `avcodec_open2'
  
   undefined reference to `av_frame_alloc'
  
   undefined reference to `av_parser_parse2'
  
   undefined reference to `av_parser_close'
  
   undefined reference to `avcodec_free_context'
  
   undefined reference to `av_frame_free'
  
   undefined reference to `av_packet_free'

  I would like to know what I am doing wrong here. Any guidance is very welcome.