In video editing, a "trann" (short for transition) is a post-production technique used to connect two separate clips.

HD refers to video resolutions that provide significantly more detail than standard definition (SD). The most common standards include:

1920 x 1080 pixels, the industry standard for high-quality digital video playback.

Transitions are used to signify a change in time or location or to maintain the visual flow of a story.

1280 x 720 pixels, often used for live streaming due to its lower bandwidth requirements.