[FFmpeg-trac] #4151(swscale:open): Crash the ffmpeg then convert YV12 (yuv420p) to NV12 if width is less than 32

[FFmpeg]

#4151: Crash the ffmpeg then convert YV12 (yuv420p) to NV12 if width is less than
32
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             Reporter:  v0lt           |                    Owner:
                 Type:  defect         |                   Status:  open
             Priority:  important      |                Component:  swscale
              Version:  git-master     |               Resolution:
             Keywords:  crash SIGSEGV  |               Blocked By:
             Blocking:                 |  Reproduced by developer:  1
Analyzed by developer:  0              |
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Comment (by cehoyos):

 Workaround is to compile with {{{--disable-asm}}} or {{{--disable-mmx}}},
 {{{--cpuflags 0}}} does not help.

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Ticket URL: <https://trac.ffmpeg.org/ticket/4151#comment:2>
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