-vf "[0:v]split[a][b];[a]crop=w=iw:h=400:x=0:y=0[top];[b]crop=w=iw:h=300:x=0:y=(400+100)[bottom];[top][bottom]vstack"
-f mp4
-c:v libx264 -profile:v high -level auto -preset medium -tune:v none -crf 22.0
-c:a libfdk_aac -ac 2 -b:a 128k
-sn -map_metadata -1 -map_chapters -1
-metadata:s:v:0 language=eng -metadata:s:a:0 language=eng
deblock=-1,-1:cabac:bframes=3:b-adapt=2:weightb:weightp=2:ref=3:scenecut=40:ipratio=1.4:pbratio=1.3:qcomp=0.60:rc-lookahead=40:mbtree:aq-mode=2:aq-strength=1:chroma-me:merange=24:me=umh:subme=7:direct=auto:trellis=1:psy-rd=1,0:psy:dct-decimate:fast-pskip:mixed-refs
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: Default,,22,&H00FFFFFF,&H0000FFFF,&H00000000,&H80000000,-1,0,0,0,100,100,0,0,1,1.5,2.0,2,10,10,20,1
False
7
5
5
0
0
1
1
9
1
True
True