[FFmpeg-trac] #3091(undetermined:new): High Bitrate I-frame CBR MPEG encoding causes error

[FFmpeg]

#3091: High Bitrate I-frame CBR MPEG encoding causes error
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             Reporter:  ortoni       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  unspecified  |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by cehoyos):

 Replying to [comment:4 ortoni]:
 > The difficulty with adding a -bt flag (10M seems to work) is that the
 stream is then marked as VBR instead of CBR,

 How can I reproduce this?

 > and the encoded frames are no longer the expected constant size.

 While CBR != constant frame size, I see constant frame size for {{{-b:v
 150M -minrate 150M -bt 6M}}}, please elaborate.

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3091#comment:5>
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