2018-04-14, 08:48 PM
It also depends on whether the score is a "complete" one. So far I've synced two movies to soundtracks. Armageddon complete and Last Jedi in one or two scenes. In both cases the music on the OST is sometimes cut differently to fit the image better. Sometimes skillfully, sometimes less so. For example in the Last Jedi prologue with the space ships arriving, there is a part of the OST with the drums that is looped, where it isn't in the OST. It actually sounds a bit "off", but I had concluded it's supposed to be that way. Apparently not. Was hacked together by the editor of the movie.
The Armageddon one is more complete, but still is sometimes cut differently in the movie.
To conclude, OSTs aren't really meant to be 1:1 syncable to movies. They are really more of a thing done purely for fans to relive some of the moments in a purely musical way, also often leaving out a lot of parts. In the movie they are sometimes/often cut differently to match the on-screen action, as zoidberg says, even in parts that adhere to the OST relatively well. This is particularly true for Star Wars scores, which are missing a lot of themes typically.
The Armageddon one is more complete, but still is sometimes cut differently in the movie.
To conclude, OSTs aren't really meant to be 1:1 syncable to movies. They are really more of a thing done purely for fans to relive some of the moments in a purely musical way, also often leaving out a lot of parts. In the movie they are sometimes/often cut differently to match the on-screen action, as zoidberg says, even in parts that adhere to the OST relatively well. This is particularly true for Star Wars scores, which are missing a lot of themes typically.