Why Use Hardware MPEG Encoding?
(1).Encoded video is guaranteed to be smooth at playback, while capture cards using PC host based software to compress video cannot achieve this, in particular when video has camera panning and zooming contents (2).Audio-Video can be guaranteed to be synchronized in the captured video file, regardless the sound card situation in the host PC, while software compression based capture cards rely heavily on PCs sound card to sync audio and video (3).Minimum host PC resources (CPU, Memory) are used for video capture & encoding, even when multiple-cards / multiple-channels are capturing and encoding video, while software compression based capture devices consume large amount of host PC resources, even on single channel encoding. (4).Video capture and compression will not be affected by other activities on the host PC, while software compression based capture is always badly influenced by other software running on the host PC.
