Promos typically run from 15 to 60 seconds, with 30-second spots being the most common, although some occasionally last run as little as five seconds or as long as 90 seconds. Most promos show select video or audio clips of scenes or segments from an upcoming program. Some television promos utilize a monologue format in which a star or host of the programbreaks the fourth wall, which is often done in a humorous and/or parodical manner. Most radio promos utilize this format as well, with a host of the program discussing the show itself, though some feature audio clips from past editions of the radio broadcast. Broadcasttelevision stations promote upcoming newscasts by featuring teases of select story packages to be featured in the broadcast, such as an investigative report or a special-interest feature segment. The airdate and time of the program's broadcast as well as the name and/or logo of the station or network that the program will be broadcast on are displayed either at the end of or throughout the promo. Until the mid-1980s on broadcast television stations, the text showing the date and time, along with the station logo were displayed on the bottom of the screen ; however, stations now posterize graphics over the tail end of a syndicated program promos where the program's logo is shown or show the latter portion of the promo within a box surrounded by the graphic. Premium cable channels and other television networks that do not accept outside advertising traditionally only air promos during pre-determined breaks that start after a program concludes; the length of these breaks can vary depending on the start time of the succeeding program, it is feasible for multiple program promotions to be shown within the break until the start of the next program. Types of promotional media:- 1) television 2) radio 3) internet 4) billboards 5) newspapers, magazines 6) pamphlets 7) SMS 8) brochures 9) word of mouth An ad in the lower third of a TV screen during a show helps to remind people what network they are watching. Called a snipe, this type of promotion targets people, especially younger people, who are used to seeing such items when they look at computer screens or cell phones. Some people have criticized the practice because it is distracting, and in some cases such ads cover up subtitles and prevent information from being seen. In some cases, the additional information can help people understand a story, but in others, too much information can interfere with communication.
