midroll

is that online is describes a system which is connected (generally electrically) to a larger network while midroll is in the middle of a roll of film.

As an adverb online

is describes actions performed over the Internet.

As a noun midroll is

a spot ad in the middle of an online video. It is often 15 or 30 seconds long.

Film vs Midroll - What's the difference?

film | midroll |

As nouns the difference between film and midroll

is that film is a thin layer of some substance; a pellicle; a membranous covering, causing opacity while midroll is a spot ad in the middle of an online video. It is often 15 or 30 seconds long.

As a verb film

is to record a motion picture on photographic film.

As an adjective midroll is

in the middle of a roll of film.

Roll vs Midroll - What's the difference?

roll | midroll |

As nouns the difference between roll and midroll

is that roll is role while midroll is (advertising) a spot ad in the middle of an online video it is often 15 or 30 seconds long.

As an adjective midroll is

(photography|film) in the middle of a roll of film.

Middle vs Midroll - What's the difference?

middle | midroll |

As nouns the difference between middle and midroll

is that middle is a centre, midpoint while midroll is (advertising) a spot ad in the middle of an online video it is often 15 or 30 seconds long.

As adjectives the difference between middle and midroll

is that middle is located in the middle; in between while midroll is (photography|film) in the middle of a roll of film.