[FFmpeg-trac] #8956(undetermined:new): af1761f causes OOM

[FFmpeg]

#8956: af1761f causes OOM
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             Reporter:  llogan       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  regression   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Cigaes):

 Replying to [ticket:8956 llogan]:
 > {{{
 > $ ./ffmpeg -f lavfi -i testsrc=s=1280x720 -filter_complex
 "[0][0]concat=n=2:v=1:a=0" -f null -
 > }}}
 [[br]]

 There is no way concatenating an infinite stream with itself can work with
 a finite amount of memory.

 [[br]]
 > {{{
 > $ ./ffmpeg -f lavfi -i testsrc=s=1280x720 -f lavfi -i testsrc=s=1280x720
 -filter_complex "[0:v]nullsink;[1:v]nullsink" -map 0 -f null -
 > }}}
 [[br]]

 ffmpeg is not designed for filter graphs without outputs.

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Ticket URL: <https://trac.ffmpeg.org/ticket/8956#comment:1>
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