To reduce the size of audio or video data through the use of a compression scheme. Also called encode.
Audio compression is the compression keeps the vocals at the right level throughout the melody or makes them jump out of the mix a little better without getting louder.
Video compression is the reduction of the amount of data and the flow rate of the resulting video. Video compression is a process for reducing the amount of data and the flow rate, and is used in direct proportion to the term bandwidth. There are 2 different compression methods: Lossless Compression and Lossy Compression. “Lossy Compression” method is generally used in CCTV security camera systems.
The compression process of videos or recorded images can be examined under 2 main headings. The first of these is Intraframe and the second is Interframe. If any video frame is compressed in itself, it is "Intra-Frame Compression", if the consecutive video/image frames are systematically analyzed and the still regions are compressed separately, it is "Interframe Compression".
The main compression ratios and forms used all over the world are listed below;
Prores: It is a method developed by Apple. It can support up to 4K. Since it was developed by Apple, it can only be used on Apple brand PCs.
Mpeg2: It is the compression system used in DVDs. It can perform both intra-frame and inter-frame compression.
H.264 / MPEG-4 AVC : It is a compression method that has been used since 2003 to compress videos in HD (High Definition) format. Almost all new cameras use this codec system. This codec, commonly known as AVCHD (Advanced Video Codec High Definition), is essentially a derivative of the H.264 system. It can perform both intra-frame and inter-frame compression.
H.265/HEVC : It is one of the newest compression methods that can compress approximately 2 times more than the H.264 system and still does not cause any decrease in image quality. Due to its increasing use, it is expected that it will soon be accepted as a general standard.