[FFmpeg-trac] #4831(avcodec:reopened): Can't initialize h264_qsv encoder post Aug 29 2015 - Ivy Bridge CPU

FFmpeg trac at avcodec.org
Mon Sep 21 15:29:42 CEST 2015


#4831: Can't initialize h264_qsv encoder post Aug 29 2015 - Ivy Bridge CPU
-------------------------------------+-------------------------------------
             Reporter:  babgvant     |                    Owner:  IvUs
                 Type:  defect       |                   Status:  reopened
             Priority:  important    |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  qsv          |               Blocked By:
  regression                         |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  1            |
-------------------------------------+-------------------------------------

Comment (by IvUs):

 Replying to [comment:9 heleppkes]:
 > The commit that increased the value from 1 does not explain why it needs
 to be increased, in fact, it seems unrelated to me?
 >
 > See db89f45535aa3e99bceb5f6bf957c90e7ca39841
 The Intel MFX SDK 1.1 (i.e. with MINOR=1) is VERY old. It was announced
 with Sandy Bridge and does not have many current features like h265
 processing etc. Latest Intel SDK has version 1.16. So using 1.9 is some
 kind of compromise to all necessary features.
 In general it is not comfortable to change MINOR depending by hardware and
 installed driver, I believe here some smart tuning necessary.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4831#comment:13>
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