[FFmpeg-trac] #4780(ffmpeg:new): FFMpeg ignores the logfile of first pass when encoding through libxvid

[FFmpeg]

#4780: FFMpeg ignores the logfile of first pass when encoding through libxvid
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             Reporter:  academic  |                     Type:  defect
               Status:  new       |                 Priority:  normal
            Component:  ffmpeg    |                  Version:  git-master
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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 Summary of the bug: FFMpeg ignores the logfile of first pass when encoding
 through libxvid. As a result, FFMpeg uses lower quants and bitrate is
 higher, than it was set.
 How to reproduce: The structure of my command line has been around the
 following:

 "ffmpeg.exe" -i "VTS_01_1" -vf
 pp=l5,crop=700:460:10:58,hqdn3d,scale=720:448 -tag:v XVID -c:v libxvid
 -b:v 1700k -g 250 -mbd rd -me_method full -flags +mv4+aic+cgop -trellis 2
 -bf 1 -ssim avg -passlogfile "log.pass" -pass 1 -c:a copy "test.avi"

 "ffmpeg.exe" -i "VTS_01_1" -vf
 pp=l5,crop=700:460:10:58,hqdn3d,scale=720:448 -tag:v XVID -c:v libxvid
 -b:v 1700k -g 250 -mbd rd -me_method full -flags +mv4+aic+cgop -trellis 2
 -bf 1 -ssim avg -passlogfile "log.pass" -pass 2 -c:a copy "test.avi"

 for sample you can add -t 00:01:01

 The specified version or higher had such an anomaly that became
 established file type xvidff.iG2Kb7, which is the version where everything
 is working correctly (ffmpeg version N-74131-g9ec17e4), not created. Logs
 of FFMpeg in attachment.

 {{{
 ffmpeg version: ffmpeg version N-74179-g9dcaae7 or higher
 built on: built with gcc 4.9.3 (GCC)
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4780>
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