This eliminates the need for the computer to "look ahead" or "look behind" to render a frame. Consequently, ProRes files are incredibly "light" on the CPU during playback. The processor does not have to perform complex temporal decoding; it simply reads the frame data. This allows for smooth, multi-stream playback on hardware that would otherwise struggle with consumer codecs.
The defining characteristic of ProRes is its reliance entirely on intra-frame compression. Unlike H.264 or H.265, which use inter-frame compression (comparing the current frame to previous and future frames to save space), ProRes treats every single frame as a complete, standalone image (essentially a sequence of compressed still photos). what is prores
The ProRes codec was first introduced by Apple in 2007 as a high-quality, visually lossless video codec for use in professional post-production and broadcasting applications. At the time, the increasing demand for high-definition (HD) video content and the need for efficient compression algorithms drove the development of ProRes. The codec was designed to provide a balance between high image quality, efficient compression, and fast processing speeds, making it suitable for demanding workflows in film, television, and live event production. This eliminates the need for the computer to
At the lowest tier sits . Designed for offline editing, it offers the lowest data rate and smallest file sizes. The image quality is significantly reduced, but the playback performance is near-instantaneous. This is often used in "proxy workflows," where high-resolution camera originals are transcoded to Proxy for editing on lightweight laptops (such as MacBooks) in the field. This allows for smooth, multi-stream playback on hardware