[FFmpeg-trac] #5035(avfilter:new): fps filter does not duplicate input frame #0

[FFmpeg]

#5035: fps filter does not duplicate input frame #0
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             Reporter:  ryanwilliams  |                    Owner:
                 Type:  defect        |                   Status:  new
             Priority:  normal        |                Component:  avfilter
              Version:  git-master    |               Resolution:
             Keywords:  fps           |               Blocked By:
             Blocking:                |  Reproduced by developer:  0
Analyzed by developer:  0             |
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Comment (by ryanwilliams):

 I have no explanation for the -r parameter it is an error on my part.
 I have tested using latest head, vcodec mpeg4 and without the -r 25
 parameter and the problem persists.

 [root at ryan ffmpeg]# pwd
 /root/ffmpeg

 [root at ryan ffmpeg]# git remote --verbose
 origin  git://source.ffmpeg.org/ffmpeg.git (fetch)
 origin  git://source.ffmpeg.org/ffmpeg.git (push)

 [root at ryan ffmpeg]# git pull
 Already up-to-date.

 [root at ryan ffmpeg]# make -j 20

 [root at ryan ffmpeg]# cd /root/tmp/

 [root at ryan tmp]# ls
 calibri.ttf  Slideshow.MOV

 [root at ryan tmp]# /root/ffmpeg/ffmpeg -threads 0 -y -i Slideshow.MOV
 -filter_complex "[0:v] fps='fps=25',
 drawtext='fontfile=calibri.ttf:fontsize=32:text=%{n}:x=20:y=20:fontcolor=white:box=1:boxcolor=0x00000099'"
 -an -vcodec mpeg4 Slideshow.mp4

 ffmpeg version N-76829-g839eb1c Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.8.3 (GCC) 20140911 (Red Hat 4.8.3-9)
   configuration: --enable-libfreetype
   libavutil      55.  9.100 / 55.  9.100
   libavcodec     57. 16.100 / 57. 16.100
   libavformat    57. 19.100 / 57. 19.100
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 15.100 /  6. 15.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Slideshow.MOV':
   Metadata:
     major_brand     : qt
     minor_version   : 0
     compatible_brands: qt
     creation_time   : 2013-01-13 08:26:52
   Duration: 00:00:55.00, start: 0.000000, bitrate: 206 kb/s
     Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz,
 stereo, fltp, 126 kb/s (default)
     Metadata:
       creation_time   : 2013-01-13 08:26:52
       handler_name    : Core Media Data Handler
     Stream #0:1(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p,
 320x460, 78 kb/s, 0.20 fps, 0.20 tbr, 600 tbn, 1200 tbc (default)
     Metadata:
       creation_time   : 2013-01-13 08:26:52
       handler_name    : Core Media Data Handler
       encoder         : H.264
 Output #0, mp4, to 'Slideshow.mp4':
   Metadata:
     major_brand     : qt
     minor_version   : 0
     compatible_brands: qt
     encoder         : Lavf57.19.100
     Stream #0:0: Video: mpeg4 ( [0][0][0] / 0x0020), yuv420p, 320x460,
 q=2-31, 200 kb/s, 25 fps, 12800 tbn, 25 tbc (default)
     Metadata:
       encoder         : Lavc57.16.100 mpeg4
 Stream mapping:
   Stream #0:1 (h264) -> fps
   drawtext -> Stream #0:0 (mpeg4)
 Press [q] to stop, [?] for help
 [output stream 0:0 @ 0x20ba060] 100 buffers queued in output stream 0:0,
 something may be wrong.
 Past duration 123.999992 too large
     Last message repeated 623 times
 Past duration 123.999992 too large  1077kB time=00:00:29.96 bitrate=
 294.6kbits/s dup=124 drop=0
     Last message repeated 624 times
 Past duration 123.999992 too large   1683kB time=00:00:54.96 bitrate=
 250.9kbits/s dup=124 drop=0
 frame= 1375 fps=1163 q=10.5 Lsize=    1697kB time=00:00:55.00 bitrate=
 252.8kbits/s dup=124 drop=0
 video:1691kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: 0.395626%
 [root at ryan tmp]#

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Ticket URL: <https://trac.ffmpeg.org/ticket/5035#comment:5>
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