In comparison, progressive video is made up of
consecutively displayed video frames. All the horizontal lines consisting of
the image being shown are contained. Therefore, progressive video has some
advantages over interlaced video. For example, images will be smoother,
fast-motion sequences are sharper and artifacts are much less prevalent.
Nonetheless, progressive video has some drawbacks as
well. People have found that progressive video demands higher bandwidth, which
may lead to some problems if this requirement cannot be satisfied. With the
development of science and technology, such problems cannot pose threat to the
application of progressive video for a lot of more advanced technological
products keep emerging. Nowadays, television systems and packaged media such as
DVD are moving away from analog transmission and storage. Instead, the digital
variants are becoming more and more popular. Under such circumstances, people
have the opportunity to apply more efficient video compression most of the
time. As a result, with the same amount of bandwidth, higher resolution images
can be achieved than possible via interlaced analog video.
As a matter of fact, interlaced video will also be
applied for a long time even though progressive video is more convenient and
popular. The reason is that broadcasts in the US
Actually, all digital, non-CRT displays can only display
progressive video. As a result, any interlaced video cannot be displayed on
them before being de-interlaced or converted. Interlaced video signals have to
be deinterlaced or converted to progressive video. With time going on, it is
possible that progressive video will totally take the place of interlaced video
in every type of device since progressive video is more convenient and
beneficial to people.
