Can the format for duration in the code below, be expressed from (fade=t=out:st=4:d=1) to (fade=t=out:st=3.800:d=1.300)
[1:v]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1,fade=t=in:st=0:d=1,fade=t=out:st=4:d=1[v1]; \