A huge amount of information comes from the camera sensor, and it would be too much for a typical camcorder to try to record, so the camera compresses the data to make recordable video files. We present a software implementation of a real-time MPEG video codec on the MediaStation 5000 multimedia system. Some main definitions: A codec (e.g., H.264, HEVC, VP9) is only responsible for the video or audio part, and one or more codecs can be merged into a. In short, video encoding is a process of compressing video files to play smoothly like a video recording instead of a quick, laggy, slideshow of individual images. There are several steps in the video process that use codecs.įirst, the camcorder takes the video stream from the camera sensor and compresses it for recording. Video codecs play an integral role in video encoding, which is why almost anyone can create and consume videos nowadays. Codecs are getting better all the time, but the perfect one has yet to be developed. As for the interpretation of those bytes, that depends on the color space used by the codec. When youve processed exactly as many rows as the video is high, youve reached the end of that frame. The holy grail is a codec that gives maximum quality with minimum file size. When youve processed exactly as many values as the video is wide, youve reached the end of that row. But how does it work, and is it enough to get us. Lossless codecs create better video, but don't typically do as good a job of reducing the file size, so most commonly used codecs are lossy. High Efficiency Video Coding (HEVC), also known as H.265, promises twice the compression possible with Blu-ray’s best video compression methods. Other codecs are "lossy", and that means that you loss some of the video information during compression. Some codecs compress the video in a "lossless" manner which means all of the original data is preserved. Audio file formats or file extensions are the containers or wrappers for these codecs. Hardware or software uses the codec to take a raw video stream and compress it into a usable video file. The most common codec for video compression is H.264 or AVC. A codec, or “ coder/decoder,” is a formula or mathematical process for compressing video files so that they require less storage space and can be used more efficiently in playback and non-linear editing systems.