Opened 6 years ago

Closed 6 years ago

Last modified 4 years ago

#3396 closed enhancement (invalid)

Intel DXVA2 H.264 Improvements for SNB GPUs

Reported by: afedchin Owned by:
Priority: normal Component: avcodec
Version: git-master Keywords: dxva2 h264
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

There are a set of patches for add some improvements for SandyBridge/IvyBridge? Intel GPUs. This still actual for SNB GPU. The latest drivers for IVB/Haswell doesn't include the old DXVADDI_Intel_ModeH264_E device and doesn't experience the issue but SNB still.

http://patches.libav.org/patch/35320/
http://patches.libav.org/patch/35321/

See discussion https://lists.libav.org/pipermail/libav-devel/2013-March/043945.html for more info.

The main issue is h264 with refs > 11 decoded on DXVADDI_Intel_ModeH264_E device with artifacts. And solution is use standard Microsoft H264 device DXVA2_ModeH264_E but decoding with Microsoft H264 on SNB will no work without this improvements.

This still actual for lastest git-master.

Change History (2)

comment:1 Changed 6 years ago by cehoyos

  • Keywords Intel removed
  • Resolution set to invalid
  • Status changed from new to closed

Please either send the patches to the ffmpeg-devel mailing list for a proper review or ask Hendrik to commit them himself.

comment:2 Changed 4 years ago by cehoyos

  • Keywords dxva2 added; dxva removed
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