FFMPEG - Scroll filter on filter_complex applies on under layer I apply filter_complex to put objects on coordinates using overlay. Sometime, I need to use the scroll filter.

Here is the code 

ffmpeg -vsync 0 -i /tmp/2SN92agDIG.png -i /tmp/TogmpB9etD.png -i /tmp/lxiQXCxhaZ-1.png -filter_complex "color=size=312x312:c=0xffffff,loop=-1[color];\
[0:v]setpts=PTS-STARTPTS,setsar=1,scale=480x320,rotate=0:c=none:ow=rotw(0):oh=roth(0),format=argb,colorchannelmixer=aa=1[0];\
[1:v]setpts=PTS-STARTPTS,setsar=1,scale=298x301,rotate=0:c=none:ow=rotw(0):oh=roth(0),format=argb,colorchannelmixer=aa=0.8[1];\
[2:v]setpts=PTS-STARTPTS,setsar=1,scale=288x614,rotate=0:c=none:ow=rotw(0):oh=roth(0),format=argb,colorchannelmixer=aa=1[2];\
[color][0]overlay=x=-76.18:y=-4[-1+0];\
[-1+0][1]overlay=x=8.043499999999995:y=5.044000000000011[0+1];\
[0+1][2]overlay=x=8.021000000000015:y=0,scroll=vertical=0.02857142857142857" -map 0:a? -c:v h264_nvenc -c:a copy -t 35 -y


It works great but when this filter is applied on an object which is on top of other objects (Ex. third object in the filter complex chain), the scroll is applied to all under layer.

Do you have an idea how can I "isolate" the scroll to be applies only on one object ?

Thanks.
The image to be scrolled has to be looped first and then scrolled.

ffmpeg -vsync 0 -i /tmp/2SN92agDIG.png -i /tmp/TogmpB9etD.png -i /tmp/lxiQXCxhaZ-1.png -filter_complex "color=size=312x312:c=0xffffff[color];\
[0:v]setpts=PTS-STARTPTS,setsar=1,scale=480x320,rotate=0:c=none:ow=rotw(0):oh=roth(0),format=argb,colorchannelmixer=aa=1[0v];\
[1:v]setpts=PTS-STARTPTS,setsar=1,scale=298x301,rotate=0:c=none:ow=rotw(0):oh=roth(0),format=argb,colorchannelmixer=aa=0.8[1v];\
[2:v]setpts=PTS-STARTPTS,setsar=1,scale=288x614,rotate=0:c=none:ow=rotw(0):oh=roth(0),format=argb,colorchannelmixer=aa=1,loop=1:1,scroll=vertical=0.02857142857142857[2v];\
[color][0v]overlay=x=-76.18:y=-4[-1+0];\
[-1+0][1v]overlay=x=8.043499999999995:y=5.044000000000011[0+1];\
[0+1][2v]overlay=x=8.021000000000015:y=0" -c:v h264_nvenc -t 35 -y out.mp4


(there are quite a few unnecessary or inert elements in this command, but I haven't removed them, such as the rotate filters which don't perform any rotation)