[FFmpeg-trac] #9600(ffmpeg:new): Fieldmatch ppsrc crashes

FFmpeg trac at avcodec.org
Sun Jan 16 14:44:24 EET 2022


#9600: Fieldmatch ppsrc crashes
-------------------------------------+-------------------------------------
             Reporter:  Viscerous    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  ffmpeg       |                  Version:  git-
             Keywords:  fieldmatch   |  master
  ppsrc                              |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Every attempt to use fieldmatch's ppsrc feature seems to crash ffmpeg
 unless the two input streams are identical (?).

 I've been trying to eliminate residual combing on fade in/outs so I tried:
 {{{
 ffmpeg -i .\source.mp4  -map 0:v -c:v h264_nvenc -tune lossless -vf
 normalize preprocessed.mp4
 ffmpeg -i .\preprocessed.mp4 -i .\source.mp4  -c:v h264_nvenc -tune
 lossless -filter_complex fieldmatch=ppsrc=1 output.mp4
 }}}

 I've tried using -report but the log doesn't really list anything
 interesting.

 Windows' event viewer shows:
 {{{
 Faulting application name: ffmpeg.exe, version: 0.0.0.0, time stamp:
 0x00000000
 Faulting module name: msvcrt.dll, version: 7.0.22000.1, time stamp:
 0x90483ed2
 Exception code: 0xc0000005
 Fault offset: 0x0000000000077e53
 Faulting process ID: 0x2670
 Faulting application start time: 0x01d80ad54d1fe1e7
 Faulting application path: E:\Utilities\ffmpeg\bin\ffmpeg.exe
 Faulting module path: C:\WINDOWS\System32\msvcrt.dll
 Report ID: 32dfca74-d300-4da7-a7c3-c2e655ec7797
 Faulting package full name:
 Faulting package-relative application ID:
 }}}
 Running Windows 11 (22000.434).
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9600>
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