[FFmpeg-trac] #9884(undetermined:open): CRF affects the number of produced frames in VP9

FFmpeg trac at avcodec.org
Sun Aug 21 00:11:15 EEST 2022


#9884: CRF affects the number of produced frames in VP9
-------------------------------------+-------------------------------------
             Reporter:  Athari       |                    Owner:  (none)
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by Balling):

 * status:  new => open

Comment:

 Replying to [comment:2 Athari]:

 > Both `-lossless 1` and `-crf 0` produce the same number of frames, 3 out
 of 12.

 Yes, I was just saying. -c:v av1 -crf 0 is lossless though. But that does
 not preserve alpha yet.

 I will open since it does look like a bug.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9884#comment:3>
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