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• ffmpeg Decode Hardware Accelerator concept and NVDEC, DXVA

  12 février 2019, par Hun

  I have video player using DX11, FFMPEG but It has so much CPU usage when H.264 4K 60FPS video play.
  So I try to hardware accelerated decode and search about this.
  But All I can get confused.
  According to this page.

  https://trac.ffmpeg.org/wiki/HWAccelIntro

  I can choose between DXVA2, NVENC.
  But I do not know what is different.

  1. Can you explain the advantages and disadvantages of these ? (pros and cons)

  2. Is there a hardware acceleration method other than these ? ex) hardware

  acceleration of ffmpeg itself. Codeccontext->hwaccel//

  Thanks for reply

• Revision 7203 : $GLOBALS[’meta’][’zengarden_theme’] fournit le répertoire complet à la ...

  29 novembre 2012, par kent1 — Log

  $GLOBALSmeta ?zengarden_theme ? fournit le répertoire complet à la racine

• Encoder for FLV ffmpeg

  13 mars 2014, par user2171669

  I need to grab desktop and write it to FLV video using ffmpeg. I need low CPU usage, but also need text to be recognizable.

  Also I see, that many players (f.e. OSFLV) doesnt support H264 FLV.

  1. Which codec should I choose ?

  2. Which encoder should I use ?

  See please (http://en.wikipedia.org/wiki/Flash_Video, 'Support for audio and video compression formats in Flash Player and in Flash Video' TABLE).

  If I am wrong somewhere (I am newbie), forgive me please. Thanks in advance.