Axis 2400+ Bedienungsanleitung PDF herunterladen (Seite 36)

NB. Several network video products use low-quality

compression technique (e.g. H.263) packed as MPEG 4.

Study the video quality, and the available MPEG 4

applications carefully before choosing this standard.

Today the MPEG 4 standard gives no beneﬁ t to the user

compared to MPEG 2.

MPEG 7 and 21

Standards for other high-level multimedia (not video).

Proprietary standards

In addition to the recognized ofﬁ cial standards, numerous

other proprietary standards have been developed and

are used by different video equipment manufacturers.

In the interests of future maintenance and integration,

it is highly recommended that you avoid these and use

only documented and widely-used open standards.

I MAGE QUALITY

SO, WHICH VIDEO COMPRESSION

STANDARD IS THE BEST?

Motion JPEG and MPEG 2 are two formats that

are highly recommended. They are well-known,

widely-used, international standards that offer

high-quality video.

ATM

JPEG

MPEG

ATM

All video compression standards, except Motion-JPEG, use the technique of mixing still images with images just containing differences from other images. This

reduces the amount of data when the main part of the scene is constant.

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