[FFmpeg-trac] #8119(avcodec:reopened): mpeg2_vaapi encoder "QP" parameter for CQP

FFmpeg trac at avcodec.org
Thu Sep 5 22:49:13 EEST 2019

#8119: mpeg2_vaapi encoder "QP" parameter for CQP
             Reporter:  ahakon       |                    Owner:
                 Type:  enhancement  |                   Status:  reopened
             Priority:  normal       |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:               |               Blocked By:
  vaapi_encode_mpeg2, cqp            |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
Changes (by ahakon):

 * status:  closed => reopened
 * resolution:  invalid =>


 Replying to [comment:1 jkqxz]:
 > `-global_quality:v`


 I writed it in my report: `-global_quality:v` not uses the common range

 And for this reason h264_vaapi and others have `-qp`. Futhermore, the
 GENERIC implementation of the VAAPI encoder has the `explicit_qp`
 variable. And all vaapi encoders, EXCEPT the mpeg2 uses it. The request
 it's to copy&paste the four lines of code from `vaapi_encode_h264.c` to

 So I reopen the ticket as it's valid.

Ticket URL: <https://trac.ffmpeg.org/ticket/8119#comment:2>
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