[FFmpeg-trac] #9728(undetermined:new): speed not displayed when encoding 2 pass with no audio

[FFmpeg]

#9728: speed not displayed when encoding 2 pass with no audio
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             Reporter:  xamarin      |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by xamarin):

 Running the 2pass command setting some audio output, does display progress
 at the bottom:

 {{{
 % ffmpeg -i input.mp4 -c:a libopus -b:a 96k -c:v libvpx-vp9 -b:v 1000k -r
 25 -pass 1 -f null NUL && ffmpeg -i input.mp4 -c:a libopus -b:a 96k -c:v
 libvpx-vp9 -b:v 1000k -r 25 -pass 2 video.webm
 ...
 frame=  797 fps=112 q=0.0 Lsize=N/A time=00:00:16.70 bitrate=N/A
 speed=2.34x
 }}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/9728#comment:1>
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