A codec is the technology being used for data files compression/decompression processes. In the broadcasting sector the term reffers to a device being capable of turning analog audio and video into digital form. It is also capable of doing the turn back process: digital to analog.
Proper codecs installed avoids the situation when you encounter the unknown file format message trying to play specific video files.
MP4 or MPEG-4 Part14, is a standard (part of MPEG-4) for storing digital audio-video streams and also subtitles and images. MPEG-4 Part 14 files have the .mp4 extension.
The MP3 file format was a big hit with its compressing features, becoming the universal format of audio. The MP4 file format is the new revolutionary way to distribute and view videos. The MP4 can be viewed similarly, but for video files instead.
A high amount of bandwidth is needed to push a video stream and here comes the MP4 standard. With it’s compression quality this codec reduces the waiting time when you download a video file. Here is how it works: the intial video is encoded into a compressed file then this file is pushed to the video player.
Advantages of an MP4 Codec
– Audio / Video file compression and encoding from large files into small file formats with high quality results
– The long time needed for downloading the video file is reduced to a minimum.
– Raw video files are encoded into compressed data
– Keeps the file’s size very low even if it offers DVD video quality.
You need to make sure you have th proper codecs installed in order to access a compressed video.
Here are the most frequently used MP4 codecs
– MPEG-4 Part 2. This MPEG version is suitable when you need to store information or perform a live or on demand broadcast as for Internet surfing. Options like progressive scanning and interlacing are supported
– Advanced Video Coding (AVC) – H.264 or MPEG-4 Part 10. This is a video compression standard being capable of returning a better than MP3 audio quality.
– Advanced Audio Coding (AAC). Was created as being the MP3 successor being able to achieve better sound quality at the same bitrates. It is the standard audio format for the iPod, HD DVD/Blu-ray Disc, XBOX 360, iPhone.
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