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• Hardware Accelerated H264 Decode using DirectX11 in Unity Plugin for UWP

  8 janvier 2019, par rohit n

  I’ve built an Unity plugin for my UWP app which converts raw h264 packets to RGB data and renders it to a texture. I’ve used FFMPEG to do this and it works fine.

  int framefinished = avcodec_send_packet(m_pCodecCtx, &packet);
  
  framefinished = avcodec_receive_frame(m_pCodecCtx, m_pFrame);
  
  // YUV to RGB conversion and render to texture after this

  Now, I’m trying to shift to hardware based decoding using DirectX11 DXVA2.0.

  Using this : https://docs.microsoft.com/en-us/windows/desktop/medfound/supporting-direct3d-11-video-decoding-in-media-foundation

  I was able to create a decoder(ID3D11VideoDecoder) but I don’t know how to supply it the raw H264 packets and get the YUV or NV12 data as output.
  (Or if its possible to render the output directly to the texture since I can get the ID3D11Texture2D pointer)

  so my question is, How do you send the raw h264 packets to this decoder and get the output from it ?

  Also, this is for real time operation so I’m trying to achieve minimal latency.

  Thanks in advance !

• Use modern avconv syntax for codec selection in documentation and tests

  18 octobre 2012, par Diego Biurrun

  Use modern avconv syntax for codec selection in documentation and tests
  

  • [DBH] doc/encoders.texi
  • [DBH] doc/faq.texi
  • [DBH] doc/filters.texi
  • [DBH] tests/fate-run.sh
  • [DBH] tests/fate/demux.mak
  • [DBH] tests/fate/h264.mak
  • [DBH] tests/fate/microsoft.mak
  • [DBH] tests/fate/mp3.mak
  • [DBH] tests/fate/mpc.mak
  • [DBH] tests/fate/utvideo.mak
  • [DBH] tests/fate/video.mak
  • [DBH] tests/fate/vqf.mak
  • [DBH] tests/lavf-regression.sh

• COMPILATION ISSUES : FFMPEG CODE ON VS2012

  7 novembre 2013, par user2964667

  I have downloaded FFMPEG source code(c code) by the following link

  http://ffmpeg.zeranoe.com/builds/

  After that,I have completed the configuration part then i was generated and linked the library files *[avcodec-54.lib,avdevice-54.lib,avfilter-3.lib,avformat-54.lib,avutil-52.lib,swresample-0.lib,swscale-2.lib ]*on Microsoft Visual Studio C++ by creating a new project by including all .c and header files.

  Referred Links :
  http://www.ffmpeg.org/platform.html#Microsoft-Visual-C_002b_002b-or-Intel-C_002b_002b-Compiler-for-Windows

  When I was compiling on Visual studio 2010... I am getting more than 300 errors under all the files libavcodec,libavdevice,libavfilter,libavformat,libavresample,libavutil,libpostproc,libswresample,libswscale like

  ASM ERRORS :

  error C2400: inline assembler syntax error in 'opcode'; found 'data type'
  
  error C2065: '__asm__' : undeclared identifier
  
  error C2143: syntax error : missing ';' before 'volatile'

  SYNTAX ERRORS :

  error C2143: syntax error : missing '}' before '.'
  
  error C2143: syntax error : missing ';' before '.'
  
  error C2059: syntax error : '.'
  
  error C2143: syntax error : missing ';' before '}'
  
  error C2059: syntax error : '}'
  
  error C2143: syntax error : missing ';' before '{'
  
  error C2447: '{' : missing function header (old-style formal list?)
  
  error C2059: syntax error : ','
  
  error C2143: syntax error : missing ';' before '{'
  
  error C2447: '{' : missing function header (old-style formal list?)

  Please anyone let me know how to compile a ffmpeg c code on vs2010 successfully.