When film is transferred using any type of telecine, you will find the speed of the film does not seem proper, due to the fact the film must be run at a speed that mathematically matches the frame rate of you television, and the number of blades that must also match the number of frames of film. This insures you do not end up with flickering of the end result. The problem is, you will find the film seems to run too fast- this must be slowed down in editing through the software .
When film is scanned, the output is addressed totally differently, specified in the frames per second one wishes, any additional adjustment may be then done in editing. Flicker is a non issue in this method of transfer.
Most film will experience jitter- most is from within the cam the film was taken- again, in editing, the software may be able to take care through stabilization. Color correction should be incorporated utilizing a vetorscope and waveform monitor-- this eliminates guess work and will insure proper output results.
The most overlooked issue, and will have a horrible negative effect if not corrected, is the relationship between "interlaced" and "progressive". This is just a little too difficult to explain here, but I did a video, if interested, discussed at the 11minute mark, you may see it here.
Editing allows to trim the bad portions, fix bad splicing, eliminate the "holes" from the leaders, add titles, music, and if desired, narration. You now have your masterpiece ready to publish!
There are problems in transferring film to video associated with speed and scanning that must be overcome to insure a comfortable viewing experience.