[FFmpeg-trac] #4780(undetermined:new): FFMpeg ignores the logfile of first pass when encoding through libxvid
FFmpeg
trac at avcodec.org
Tue Aug 18 15:22:20 CEST 2015
#4780: FFMpeg ignores the logfile of first pass when encoding through libxvid
-------------------------------------+-------------------------------------
Reporter: academic | Owner:
Type: defect | Status: new
Priority: important | Component:
Version: git-master | undetermined
Keywords: passlogfile | Resolution:
libxvid regression | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by cehoyos):
* keywords: => passlogfile libxvid regression
* priority: normal => important
* component: ffmpeg => undetermined
Comment:
I tested the following:
{{{
$ ffmpeg -f lavfi -i testsrc -vcodec libxvid -vb 80k -pass 1 -passlogfile
log.pass -t 60 -y out1.avi
$ ffmpeg -f lavfi -i testsrc -vcodec libxvid -vb 80k -pass 2 -passlogfile
log.pass -t 60 -y out1.avi
$ ffmpeg -f lavfi -i testsrc -vcodec libxvid -vb 200k -pass 1 -passlogfile
log.pass -t 60 -y out2.avi
$ ffmpeg -f lavfi -i testsrc -vcodec libxvid -vb 200k -pass 2 -passlogfile
log.pass -t 60 -y out2.avi
}}}
The output files have different size, the size changes when I empty the
log file (that is present) between first and second pass, so I don't think
the log file is ignored. What do I miss?
If this is a regression, please point us to the exact change introducing
the issue.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/4780#comment:1>
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