MPEG encoding is the process of capturing (digitizing) or converting (re-encoding) video and/or audio to one of several MPEG video and/or audio standards (codecs) for distribution (Internet, LAN) or for archiving to optical disc (CD, DVD). MPEG encoding can be done purely in software, or by using an MPEG capture card or a video editing card with in-built MPEG encoding capabilities, or via a dedicated hardware encoder like those built-into DVD-Video recorders.
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