[FFmpeg-trac] #1578(undetermined:open): variable FPS incorrect frame length

[FFmpeg]

#1578: variable FPS incorrect frame length
-------------------------------------+-------------------------------------
             Reporter:  kubabrecka   |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:  fps          |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * keywords:  fps,framerate,vfr,qtrle => fps
 * status:  new => open
 * version:  unspecified => git-master
 * reproduced:  0 => 1


Comment:

 For future bug-reports: Please always add complete, uncut console output
 together with the command line.

 Also reproducible with -f mov:
 {{{
 $ ffmpeg -i apple-animation-variable-fps-bug.mov -r 30 out.mov
 ffmpeg version N-44854-gbad603c Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Sep 28 2012 23:13:16 with gcc 4.5.3 (GCC)
   configuration: --cc='/usr/local/gcc-4.5.3/bin/gcc -m32' --enable-gpl
   libavutil      51. 73.101 / 51. 73.101
   libavcodec     54. 61.100 / 54. 61.100
   libavformat    54. 29.105 / 54. 29.105
   libavdevice    54.  3.100 / 54.  3.100
   libavfilter     3. 18.100 /  3. 18.100
   libswscale      2.  1.101 /  2.  1.101
   libswresample   0. 16.100 /  0. 16.100
   libpostproc    52.  1.100 / 52.  1.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'apple-animation-variable-fps-
 bug.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     creation_time   : 1942-06-22 00:41:40
   Duration: 00:00:02.93, start: 0.000000, bitrate: 58 kb/s
     Stream #0:0(eng): Video: qtrle (rle  / 0x20656C72), rgb24, 112x182, 55
 kb/s, 1.69 fps, 30 tbr, 3k tbn, 3k tbc
     Metadata:
       creation_time   : 1942-06-22 00:41:40
       handler_name    : Apple Alias Data Handler
 Output #0, mov, to 'out.mov':
   Metadata:
     major_brand     : qt
     minor_version   : 537199360
     compatible_brands: qt
     encoder         : Lavf54.29.105
     Stream #0:0(eng): Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 112x182,
 q=2-31, 200 kb/s, 30 tbn, 30 tbc
     Metadata:
       creation_time   : 1942-06-22 00:41:40
       handler_name    : Apple Alias Data Handler
 Stream mapping:
   Stream #0:0 -> #0:0 (qtrle -> mpeg4)
 Press [q] to stop, [?] for help
 frame=   82 fps=0.0 q=2.0 Lsize=      42kB time=00:00:02.73 bitrate=
 125.5kbits/s dup=77 drop=0
 video:41kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 2.723810%
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1578#comment:1>
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