[FFmpeg-trac] #3170(swscale:new): Support large scaling

[FFmpeg]

#3170: Support large scaling
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               Reporter:  ubitux       |                  Owner:
                   Type:  enhancement  |                 Status:  new
               Priority:  normal       |              Component:  swscale
                Version:  unspecified  |               Keywords:
             Blocked By:               |               Blocking:
Reproduced by developer:  0            |  Analyzed by developer:  0
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 {{{
 ./ffmpeg -f lavfi -i testsrc=s=1920x1080 -vf scale=30:30 -f null -
 ffmpeg version N-58440-g841c0aa Copyright (c) 2000-2013 the FFmpeg
 developers
   built on Nov 25 2013 10:23:58 with gcc 4.8.2 (GCC)
   configuration: --enable-gpl --enable-libx264 --enable-libmp3lame
 --enable-x11grab --enable-libvorbis --samples=/home/ux/fate-samples
 --enable-libfreetype --enable-libvpx --cpu=native --cc='ccache cc'
   libavutil      52. 54.100 / 52. 54.100
   libavcodec     55. 44.100 / 55. 44.100
   libavformat    55. 21.101 / 55. 21.101
   libavdevice    55.  5.100 / 55.  5.100
   libavfilter     3. 91.100 /  3. 91.100
   libswscale      2.  5.101 /  2.  5.101
   libswresample   0. 17.104 /  0. 17.104
   libpostproc    52.  3.100 / 52.  3.100
 Input #0, lavfi, from 'testsrc=s=1920x1080':
   Duration: N/A, start: 0.000000, bitrate: N/A
     Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1920x1080
 [SAR 1:1 DAR 16:9], 25 tbr, 25 tbn, 25 tbc
 sws: filterSize 256 is too large, try less extreme scaling or increase
 MAX_FILTER_SIZE and recompile
 sws: initFilter failed
 [Parsed_scale_0 @ 0x1d018c0] Failed to configure output pad on
 Parsed_scale_0
 Error opening filters!
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/3170>
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