ffconcat version 1.0
 
 stream    0
 exact_stream_id 257
 stream    1
 exact_stream_id 256
 
 file      %SRCFILE%
 
 file      %SRCFILE%
 duration  0.5
 
 file      %SRCFILE%
 inpoint   00:02.20
 
 file      %SRCFILE%
 inpoint   00:01.80
 outpoint  00:02.00