30-second spot
From DigitalJargonBuster
The iconic advertising slot and duration for television commercials.
The take off of online TV has created new opportunities for running traditional broadcast commercials through new platforms. These might reach a new audience, or the same audience that has switched from traditional television viewing to online. The durations of web commercials are still evolving, but the standard formats for broadcast will certainly continue online. For pre-roll commercials, thirty seconds may feel quite long for some content and some audiences, so marketers are suggested to talk with media owners about the current best practice in their sector.
See also: Pre-roll, Mid-roll, End-roll, 15-second spot