Hello all,

I use FFmpeg in three steps, the first concat several videos into one, then 
sync the audio and finally trim the video. Is it possible to combine the 
following three calls into one call instead?

ffmpeg -y -f concat -safe 0 -copyts -i videoList.txt -muxpreload 0 -muxdelay 0 
-c copy -b:a 128K -cpu-used 0 -preset slow -movflags +faststart concat.mp4

ffmpeg -y -i concat.mp4 -itsoffset 1.9 -i concat.mp4 -c:a copy -c:v copy -map 
0:v:0 -map 1:a:0 audioFixed.mp4

ffmpeg -y -ss 35 -i audioFixed.mp4 -t 30 -c copy final.mp4

Many thanks to you all in advance!
Best,
Ram
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