This comparison is aligned (using trim()) and stacked; each is resized 1212x540 to keep approx. AR (the reason is so it can be stacked and viewed on a 1080 height screen).
They are not labelled on purpose - Which one is the YT video, which one is the jm_fps manolito mod (with blend=true, masking disabled) using your test1.mkv ? It's easy to tell from a compression standpoint (the YT version will have more compression artifacts)
http://www.mediafire.com/file/vmi3pm...mpare.mp4/file
Some frames slightly better, some slightly worse, but in terms of overall "smoothness" , I'd argue it's fairly close. I'm sure you can tweak the settings a bit to make it even better in some scenes, but the main differences between typical scripts is the blend=true . (Most of the time people don't want blending for general use scenarios)
I understand you're mainly interested in "smoothness" only here, less so about artifacts . But artifacts can contribute to the
perception of reduced smoothness; so don't automatically discount artifacts either. But clearly both have ugly artifacts, some better some worse
OR - if you still think one is more smooth, then identify which one and why, or what about it is more smooth ?