mormot2-runredirect-multiprocess

mORMot2 FFmpeg Multi-Process Demo
2.4.14669 4
> FFmpeg detected: \mORMot2\ex\external-process\exe\ffmpeg.exe
ffmpeg version 2026-04-06-git-7fd2be97b9-essentials_build-www.gyan.dev Copyright (c) 2000-2026 the FFmpeg developers

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 Demo 1: Single FFmpeg instance - graceful "q" stdin shutdown
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> Command:
  \mORMot2\ex\external-process\exe\ffmpeg.exe -y -hide_banner -loglevel info -re -f lavfi -i testsrc=size=640x480:rate=30 -t 15 -c:v libx264 -preset ultrafast -f null -

> Started pid=11912 - letting it encode for 2 seconds...
> collected 1200 bytes of stderr output so far:

    Side data:
      CPB properties: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame=   45 fps= 29 q=15.0 size=N/A time=00:00:01.50 bitrate=N/A speed=0.974x elapsed=0:00:01.54

> Sending "q"#10 to FFmpeg stdin for graceful shutdown...
264 @ 00000249fcb785c0] frame I:1     Avg QP:20.00  size: 13202
[libx264 @ 00000249fcb785c0] frame P:76    Avg QP:15.34  size:   814
[libx264 @ 00000249fcb785c0] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 00000249fcb785c0] mb P  I16..4:  2.5%  0.0%  0.0%  P16..4:  6.8%  0.0%  0.0%  0.0%  0.0%    skip:90.7%
[libx264 @ 00000249fcb785c0] coded y,u,v intra: 3.6% 2.4% 2.0% inter: 1.1% 1.1% 0.9%
[libx264 @ 00000249fcb785c0] i16 v,h,dc,p: 82%  4%  1% 12%
[libx264 @ 00000249fcb785c0] kb/s:234.06

> Result:
  exit code: 0 (0 = clean graceful exit)
  total time: 2250 ms

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 Demo 2: THREE concurrent FFmpeg instances, stopped one by one
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  [Deck1-testsrc pid=11660 started]
  [Deck2-smptebars pid=28068 started]
  [Deck3-mandelbrot pid=6800 started]

> Letting all 3 decks encode for 2 seconds...

> Stopping Deck2 gracefully (q#10)...
  [Deck2 exited with code=0]
  Deck1 running=1  Deck3 running=1

> Remaining decks keep running for 1 more second...

> Stopping Deck1 gracefully (q#10)...
  [Deck1 exited with code=0]
  Deck3 running=1

> Stopping Deck3 gracefully (q#10)...
  [Deck3 exited with code=0]

> All 3 decks stopped independently - sibling isolation confirmed

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 Demo 3: Graceful "q" vs hard Terminate()
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> Run A: graceful "q" shutdown...
  exit code = 0  (expect 0)
  OK: FFmpeg printed final encoding summary (clean flush)

> Run B: hard Terminate() without "q"...
  exit code = 255  (usually non-zero: hard kill)
  no final summary - encoder did not flush (expected for hard kill)

=== All FFmpeg demos complete ===
Press Enter to exit...