Basically. Twixtor has a set amout of motion it can follow, but beyond a certain point the difference between frames is too great, it doesn't have enough data to recognise what pixels are moving where. For something like that and twixtor, you'll need a higher FPS camera(120FPS might do it). The key to the twixtor effect is to use it in spots well, so that it doesn't stand out that it's frame interpolation. For instance, twixtor cannot follow the rubber balloon as it collapses, but it can follow the water as it looses it's shape. Like this: http://vimeo.com/27897513