[FFmpeg-trac] #2348(undetermined:new): Slowmotion when reencoding mpeg stream

[FFmpeg]

#2348: Slowmotion when reencoding mpeg stream
-------------------------------------+-------------------------------------
             Reporter:  cehoyos      |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  dts          |               Resolution:
  mpeg2video mpegps                  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by cehoyos):

 The problem has changed, speed is correct but frames are dropped now:
 {{{
 $ ffmpeg -i rob-test.mpg -qscale 2 out.avi
 ffmpeg version N-59187-g09d6cea Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Dec 18 2013 12:46:12 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --enable-libzvbi
   libavutil      52. 58.101 / 52. 58.101
   libavcodec     55. 45.102 / 55. 45.102
   libavformat    55. 22.100 / 55. 22.100
   libavdevice    55.  5.102 / 55.  5.102
   libavfilter     4.  0.100 /  4.  0.100
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, mpeg, from 'rob-test.mpg':
   Duration: 00:00:11.34, start: 0.360000, bitrate: 7140 kb/s
     Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 720x480
 [SAR 32:27 DAR 16:9], max. 8500 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94
 tbc
 Please use -q:a or -q:v, -qscale is ambiguous
 Output #0, avi, to 'out.avi':
   Metadata:
     ISFT            : Lavf55.22.100
     Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 720x480 [SAR
 32:27 DAR 16:9], q=2-31, 200 kb/s, 29.97 tbn, 29.97 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video -> mpeg4)
 Press [q] to stop, [?] for help
 frame=  228 fps=0.0 q=2.0 Lsize=    7526kB time=00:00:11.37
 bitrate=5418.7kbits/s dup=0 drop=113
 video:7512kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 0.182652%
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/2348#comment:1>
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