Billedsekvens

Billedsekvens is a term used to describe a sequence of images or frames that, when shown in rapid succession, creates the perception of motion. The concept is central to film, television, animation, and many imaging workflows, where moving pictures are built from individual still frames rather than a single continuous video file in the capture or production stage. Billedsekvenser can be stored as a series of image files named in sequence (for example frame001.png, frame002.png) or rendered as a frame sequence from a computer graphics pipeline.

In film and video production, a billedsekvens represents the raw material captured by cameras or generated during animation or effects work. The speed of playback is determined by the frame rate, measured in frames per second (fps). Common rates include around 24 fps for cinema, 25 or 30 fps for television, and higher rates such as 60 fps for smooth motion or slow-motion effects. Time-lapse and stop-motion techniques rely on intentionally capturing frames at intervals to produce the desired motion when played back at normal or accelerated speeds. After shooting, frames are edited and then conformed to the final delivery format.

In computer graphics and visual effects, image sequences are widely used because they preserve image quality and color information for each frame, enabling precise color grading and compositing. Common formats for image sequences include PNG, TIFF, and EXR. This approach contrasts with compressing the entire sequence into a single video file, which can introduce compression artifacts and limit post-production flexibility.

Applications of billedsekvenser span from cinematic production and animation to scientific imaging and time-lapse documentation, where individual frames serve as the building blocks of motion.