[FFmpeg-user] 3D depth in output

[xbmcgotham2014]

Hi,

I was successful in converting a 3D SBS to 3D TAB using the following
string:

ffmpeg -i input.mp4 -vf stereo3d=sbsl:abl,scale=1920x1080 -aspect 16:9
-c:a copy output.mp4


However when playing the output file, I noticed that the depth of the 3D
in the input file is better/more than the output file.

Why is the depth different? Anything I need to add to the command line
to keep the original depth?

Thanks