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转码

转码是指直接数位对数位(digital-to-digital)转换一个编码到另一种编码格式。例如,视讯数据转化为音讯数据,通常是因为目标仪器的不支持或者储存量大小有限,或者只是单纯将数据转化为能够更为广泛支持的格式。

目前最流行的转码是将原始编码转到一个中继格式(intermediate format, 如 PCMYUV),在某种程度上仍然包含了原始编码的内容,然后再转到目标格式。

用途

[编辑]

转码技术是广泛使用的家庭影院电脑(Home theatre PC)软件,如MythTV的和Freevo,以减少使用的磁盘空间的视讯档。最常见的转码是MPEG-2文件到的MPEG-4格式。

外部链接

[编辑]
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转码
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