[FFmpeg-trac] #2595(avfilter:new): Last frame of partly deintelacted video stream, not deinterlaced

[FFmpeg]

#2595: Last frame of partly deintelacted video stream, not deinterlaced
------------------------------------+------------------------------------
             Reporter:  khali       |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:  yadif       |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
------------------------------------+------------------------------------

Comment (by khali):

 {{{
 $ ffmpeg -i ffmpeg-bug-2595.mpg -vf "yadif=enable='between(t,0,1.040)'"
 -codec:v libx264 ffmpeg-bug-2595.mp4
 ffmpeg version N-53323-gb8a9876 Copyright (c) 2000-2013 the FFmpeg
 developers
   built on May 21 2013 16:20:56 with gcc 4.7 (SUSE Linux)
   configuration: --prefix=/opt/ffmpeg --enable-shared --enable-libmp3lame
 --enable-libxvid --enable-postproc --enable-gpl --enable-x11grab --enable-
 avfilter --enable-version3 --enable-libx264 --enable-pthreads --enable-
 libvorbis --enable-libtheora
   libavutil      52. 33.100 / 52. 33.100
   libavcodec     55. 10.101 / 55. 10.101
   libavformat    55.  7.100 / 55.  7.100
   libavdevice    55.  1.100 / 55.  1.100
   libavfilter     3. 68.102 /  3. 68.102
   libswscale      2.  3.100 /  2.  3.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, mpeg, from 'ffmpeg-bug-2595.mpg':
   Duration: 00:00:01.96, start: 0.245800, bitrate: 4838 kb/s
     Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR
 64:45 DAR 16:9], 25.25 fps, 25 tbr, 90k tbn, 100 tbc
 [libx264 @ 0x15e6d20] using SAR=64/45
 [libx264 @ 0x15e6d20] using cpu capabilities: MMX2 SSE2Fast SSSE3
 FastShuffle SSE4.2
 [libx264 @ 0x15e6d20] profile High, level 3.0
 [libx264 @ 0x15e6d20] 264 - core 129 - H.264/MPEG-4 AVC codec - Copyleft
 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3
 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00
 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12
 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0
 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25
 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0
 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
 Output #0, mp4, to 'ffmpeg-bug-2595.mp4':
   Metadata:
     encoder         : Lavf55.7.100
     Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p,
 720x576 [SAR 64:45 DAR 16:9], q=-1--1, 12800 tbn, 25 tbc
 Stream mapping:
   Stream #0:0 -> #0:0 (mpeg2video -> libx264)
 Press [q] to stop, [?] for help
 frame=   50 fps=0.0 q=-1.0 Lsize=     251kB time=00:00:01.92
 bitrate=1069.8kbits/s dup=1 drop=0
 video:250kB audio:0kB subtitle:0 global headers:0kB muxing overhead
 0.474299%
 }}}

 If you look at the output video file you'll see that the frame at
 00:01.040 was not deinterlaced. I tried a different container format (avi)
 and a different video codec (libxvid) and the problem is still present. I
 tries using between(n,0,16) and the result is the same. If I use
 between(t,0,1.080) instead then it looks OK.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2595#comment:3>
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