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• #61017 b3Ro senior tag cigam #61016

  Új Válasz 2018-06-28 20:39:41 #61017

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  b3Ro

  senior tag

  válasz cigam #61016 üzenetére

  Az a laptop nyogve nyelos lesz.
  Arch wikin irnak is róla.

  Hardware accelerated H.264 decoding on GMA 4500
  The libva-intel-driver package only provides hardware accelerated MPEG-2 decoding for GMA 4500 series GPUs. The H.264 decoding support is maintained in a separated g45-h264 branch, which can be used by installing libva-intel-driver-g45-h264AUR package. Note however that this support is experimental and its development has been abandoned. Using the VA-API with this driver on a GMA 4500 series GPU will offload the CPU but may not result in as smooth a playback as non-accelerated playback. Tests using mplayer showed that using vaapi to play back an H.264 encoded 1080p video halved the CPU load (compared to the XV overlay) but resulted in very choppy playback, while 720p worked reasonably well [5]. This is echoed by other experiences [6]. Setting the preallocated video ram size higher in bios results in much better hardware decoded playback. Even 1080p h264 works well if this is done. Smooth playback (1080p/720p) works also with mpv-gitAUR in combination with ffmpeg-gitAUR and libva-intel-driver-g45-h264AUR. With MPV and the Firefox plugin "Watch with MPV"[7] it is possible to watch hardware accelerated YouTube videos.

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