[FFmpeg-trac] #3399(undetermined:open): Bad output framerate decision for mp4 from camera (was: Scaling MP4 Video results in bad output MP4)

[FFmpeg]

#3399: Bad output framerate decision for mp4 from camera
-------------------------------------+-------------------------------------
             Reporter:  mressler     |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  new => open
 * version:  2.1.3 => git-master
 * reproduced:  0 => 1


Comment:

 Unrelated to scaling, work-around is to use {{{-r 30000/1001}}}
 {{{
 $ ffmpeg -i VID_20130619_161750_449.mp4 -qscale 2 -strict -2 -vcodec mpeg4
 out.mov
 ffmpeg version N-60713-g1355caf Copyright (c) 2000-2014 the FFmpeg
 developers
   built on Feb 18 2014 16:50:43 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --enable-gray
   libavutil      52. 64.100 / 52. 64.100
   libavcodec     55. 52.102 / 55. 52.102
   libavformat    55. 33.100 / 55. 33.100
   libavdevice    55. 10.100 / 55. 10.100
   libavfilter     4.  1.102 /  4.  1.102
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'VID_20130619_161750_449.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 0
     compatible_brands: isom3gp4
     creation_time   : 2013-06-19 20:18:49
   Duration: 00:00:58.05, start: 0.000000, bitrate: 15706 kb/s
     Stream #0:0(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
 fltp, 128 kb/s (default)
     Metadata:
       creation_time   : 2013-06-19 20:18:49
       handler_name    : SoundHandle
     Stream #0:1(eng): Video: h264 (Constrained Baseline) (avc1 /
 0x31637661), yuv420p, 1920x1080, 15469 kb/s, SAR 65536:65536 DAR 16:9,
 29.89 fps, 1k tbr, 1k tbn, 2k tbc (default)
     Metadata:
       creation_time   : 2013-06-19 20:18:49
       handler_name    : VideoHandle
 Please use -q:a or -q:v, -qscale is ambiguous
 Output #0, mov, to 'out.mov':
   Metadata:
     major_brand     : isom
     minor_version   : 0
     compatible_brands: isom3gp4
     encoder         : Lavf55.33.100
     Stream #0:0(eng): Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 1920x1080
 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 16k tbn, 1k tbc (default)
     Metadata:
       creation_time   : 2013-06-19 20:18:49
       handler_name    : VideoHandle
     Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
 fltp, 128 kb/s (default)
     Metadata:
       creation_time   : 2013-06-19 20:18:49
       handler_name    : SoundHandle
 Stream mapping:
   Stream #0:1 -> #0:0 (h264 -> mpeg4)
   Stream #0:0 -> #0:1 (aac -> aac)
 Press [q] to stop, [?] for help
 frame=58016 fps=330 q=2.0 Lsize= 1132027kB time=00:00:58.01
 bitrate=159845.0kbits/s dup=56281 drop=0
 video:1130841kB audio:894kB subtitle:0 data:0 global headers:0kB muxing
 overhead 0.025849%
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3399#comment:4>
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