1, OST is a noun in movies, so it is also called movie soundtrack or movie soundtrack. OST generally refers to the soundtrack or song in the movie. BGM appears in the animation industry and is an indispensable element in animation.

At the same time, ost is widely used, whether it is movies, TV series, animation, or even games. Excellent ost can not only match the plot, render the atmosphere, but also make the audience feel the same.

2.OST is the original soundtrack, that is, the soundtrack that stores background music in all the soundtracks of the movie. BGM is background music, which refers to the music as a background in movies, TV plays and other film and television works, and is usually silent.

3.OST usually includes the credits at the beginning of the film, credits at the end of the film, inserted songs and N BGM. BGM does not include OST.

4. The speed of 4.BGM can be adjusted, and there are many versions and usages. OST speed is fixed, and the version is piano chord, which is only used in conjunction with the plot. Therefore, the difference between OST and BGM is different in source, meaning, scope and usage.