[FFmpeg-trac] #9299(undetermined:new): ffmpeg xfade eating too much memory(killed by kernel)

[FFmpeg]

#9299: ffmpeg xfade eating too much memory(killed by kernel)
-------------------------------------+-------------------------------------
             Reporter:  Richard W    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  memory       |               Blocked By:
  xfade killed                       |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 I am using ffmpeg to concatenate some clips with transitions, but it's
 using up to 15G memory in my machine and it gets killed by the kernel.
 there are 15 clips (1080P) and total time around 2.5 minutes.

 The exact command I am using is:
  /data/ffmpeg-git-20210611-amd64-static/ffmpeg -i cut_result0.mp4 -i
 cut_result1.mp4 -i cut_result2.mp4 -i cut_result3.mp4 -i cut_result4.mp4
 -i cut_result5.mp4 -i cut_result6.mp4 -i cut_result7.mp4 -i
 cut_result8.mp4 -i cut_result9.mp4 -i cut_result10.mp4 -i cut_result11.mp4
 -i cut_result12.mp4 -i cut_result13.mp4 -i cut_result14.mp4
 -filter_complex
 "[0:v][1:v]xfade=transition=fadeblack:duration=1.000:offset=8.960[v01];[v01][2:v]xfade=transition=fadeblack:duration=1.000:offset=16.120[v02];[v02][3:v]xfade=transition=fadeblack:duration=1.000:offset=25.760[v03];[v03][4:v]xfade=transition=fadeblack:duration=1.000:offset=34.000[v04];[v04][5:v]xfade=transition=fadeblack:duration=1.000:offset=46.800[v05];[v05][6:v]xfade=transition=fadeblack:duration=1.000:offset=62.440[v06];[v06][7:v]xfade=transition=fadeblack:duration=1.000:offset=70.840[v07];[v07][8:v]xfade=transition=fadeblack:duration=1.000:offset=80.440[v08];[v08][9:v]xfade=transition=fadeblack:duration=1.000:offset=85.360[v09];[v09][10:v]xfade=transition=fadeblack:duration=1.000:offset=114.080[v10];[v10][11:v]xfade=transition=fadeblack:duration=1.000:offset=122.080[v11];[v11][12:v]xfade=transition=fadeblack:duration=1.000:offset=127.400[v12];[v12][13:v]xfade=transition=fadeblack:duration=1.000:offset=132.600[v13];[v13][14:v]xfade=transition=fadeblack:duration=1.000:offset=137.68
 0,format=yuv420p[video];[0:a][1:a]acrossfade=d=1.000:c1=tri:c2=tri[a01];[a01][2:a]acrossfade=d=1.000:c1=tri:c2=tri[a02];[a02][3:a]acrossfade=d=1.000:c1=tri:c2=tri[a03];[a03][4:a]acrossfade=d=1.000:c1=tri:c2=tri[a04];[a04][5:a]acrossfade=d=1.000:c1=tri:c2=tri[a05];[a05][6:a]acrossfade=d=1.000:c1=tri:c2=tri[a06];[a06][7:a]acrossfade=d=1.000:c1=tri:c2=tri[a07];[a07][8:a]acrossfade=d=1.000:c1=tri:c2=tri[a08];[a08][9:a]acrossfade=d=1.000:c1=tri:c2=tri[a09];[a09][10:a]acrossfade=d=1.000:c1=tri:c2=tri[a10];[a10][11:a]acrossfade=d=1.000:c1=tri:c2=tri[a11];[a11][12:a]acrossfade=d=1.000:c1=tri:c2=tri[a12];[a12][13:a]acrossfade=d=1.000:c1=tri:c2=tri[a13];[a13][14:a]acrossfade=d=1.000:c1=tri:c2=tri[audio]"
 -map [video] -map [audio] -movflags +faststart my_output.mp4

 The full log at https://pastebin.com/AszkJh6E
 The original samples are uploaded to office one drive: https
 ://dutaotbsteduau-
 my.sharepoint.com/:f:/g/personal/i_edu365_site/EoeBxKbg0xBIv2-Ky54dxdEBgw8wUY6ZgEsp2dCNk93LzA?e=tbHyXe
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Ticket URL: <https://trac.ffmpeg.org/ticket/9299>
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