and the script, which is the basis of a movie, is very important. Of course, some great god directors can make a bad story great and turn it into magic. But after all, there are few such ingenious pens and such directors are very expensive.
the actor's performance is very important to the film.
editing is a very important part. Hitchcock said that what really makes him incomparable compared to shooting is his editing magic.
The use of the lens and the scene scheduling should make it smooth all the way. The effect is definitely better.
The use of light and shadow colors and different color matching treatments can further express the mood of the film.
detail handling. Excellent details from the group performance.
dubbing.
costume props, important props are an indispensable link to promote or predict the plot.