[FFmpeg-trac] #1766(undetermined:new): Can't encode MPEG-2 at more than ~3Mb/s

FFmpeg trac at avcodec.org
Thu Sep 27 01:21:36 CEST 2012

#1766: Can't encode MPEG-2 at more than ~3Mb/s
             Reporter:               |                     Type:  defect
  agusdallalba                       |                 Priority:  normal
               Status:  new          |                  Version:
            Component:               |  unspecified
  undetermined                       |               Blocked By:
             Keywords:  mpeg2video,  |  Reproduced by developer:  0
  dvd                                |
             Blocking:               |
Analyzed by developer:  0            |
 Summary of the bug: I'm trying to convert a 720p25 video to DVD-spec
 6500kbps MPEG2, but the output is <3Mb/s instead. The subjective quality
 is not that good, there are blocks in the background and the picture lacks
 sharpness. I'm using ffmpeg version git-2012-09-26-299c0b3.

 The source video is a remuxed Sherlock.S01E01.720p.BluRay.x264-AVCHD, that
 can be easily found in P2P sites. With some guidance I can try encoding
 the original BluRay, but ripping it on linux has proven itself way too
 difficult for me and I figured it would be the same.

 I originally used a much more complicated command line, but the issue is
 still there with the stripped-down {{{ ffmpeg -i "$1" -target pal-dvd -b:v
 6450k -an -pass 1/2 "$1".mpg -report }}}

 I've attached ffmpeg's reports and the two-pass log, please tell me if you
 need anything else, I'll try to reply as soon as I can. Thanks!

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1766>
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