[FFmpeg-trac] #4785(avfilter:closed): Decimate filter doesn't work when used directly with fieldmatch

[FFmpeg]

#4785: Decimate filter doesn't work when used directly with fieldmatch
-------------------------------------+-------------------------------------
             Reporter:  Detergent    |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:  avfilter
              Version:  git-master   |               Resolution:  invalid
             Keywords:  fieldmatch   |               Blocked By:
  decimate pullup                    |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  new => closed
 * resolution:   => invalid


Comment:

 The sample you uploaded has progressive content, it cannot be processed by
 an inverse telecine filter.
 {{{
 $ ffmpeg -i sample.ts -vf idet -an -f null -
 ffmpeg version N-74483-gb807f7e Copyright (c) 2000-2015 the FFmpeg
 developers
   built with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl
   libavutil      54. 30.100 / 54. 30.100
   libavcodec     56. 57.100 / 56. 57.100
   libavformat    56. 40.101 / 56. 40.101
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 34.100 /  5. 34.100
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  2.101 /  1.  2.101
   libpostproc    53.  3.100 / 53.  3.100
 Input #0, mpegts, from 'sample.ts':
   Duration: 00:00:20.59, start: 1.400000, bitrate: 13685 kb/s
   Program 1
     Metadata:
       service_name    : Service01
       service_provider: FFmpeg
     Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
 yuv420p(tv), 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, max. 38800
 kb/s, 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
     Stream #0:1[0x101](eng): Audio: ac3 ([129][0][0][0] / 0x0081), 48000
 Hz, 5.1(side), fltp, 384 kb/s
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf56.40.101
     Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1920x1080
 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn, 29.97 tbc
     Metadata:
       encoder         : Lavc56.57.100 rawvideo
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video (native) -> rawvideo (native))
 Press [q] to stop, [?] for help
 [null @ 0x3767540] Encoder did not produce proper pts, making some up.
 frame=  464 fps=380 q=-0.0 Lsize=N/A time=00:00:19.28 bitrate=N/A
 video:44kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
 muxing overhead: unknown
 [Parsed_idet_0 @ 0x3769a40] Repeated Fields: Neither:   462 Top:     1
 Bottom:     1
 [Parsed_idet_0 @ 0x3769a40] Single frame detection: TFF:     0 BFF:     8
 Progressive:   363 Undetermined:    93
 [Parsed_idet_0 @ 0x3769a40] Multi frame detection: TFF:     0 BFF:     4
 Progressive:   460 Undetermined:     0
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/4785#comment:10>
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