An Understanding of Digital Video Formats by anamaulida

VIEWS: 4 PAGES: 2

									                             Computers are an essential tool for today's
modern successful business. They save time with accounting, writing and
Internet marketing. Many businesses use the first two tools regularly and
overlook the third very important tool, Internet marketing.Internet
marketing is the processes of promoting, selling and distributing a
product or service 24|7 on the Internet. There is no better way to sell
in a global market that makes purchases globally 24 hours a day than with
a well designed website that includes video. Video is also involved in
many litigation cases and is quickly finding its way into court rooms
around the world. In the following paragraphs, my goal is to help you
understand digital video and its many formats. In its simplest terms,
digital video can be defined as a video that has been recorded using a
software program and digitally stored in a computer. That digitized
information can be controlled from a computer and displayed directly on a
computer monitor.All current video file formats, which are listed below,
are PCM or Pulse-code modulation based PCM is a digital representation of
an analog signal where the magnitude of the signal is sampled regularly
at uniform intervals, then quantized to a series of symbols in a numeric
usually binary code based. Here is a brief catalog of video file types so
you better understand how digital video is used. CCIR 601 (or RE 601) is
a digital video file used for broadcast television stations because of
the analogue and digital television conversion. This video file format
converts and encodes interlaced analogue video signals into digital
video.In the old days, television commercials were distributed at first
on analogue then digital tape. Today, TV commercials can be distributed
over wireless networks electronically using digital technology.Services
like SpotMixer allow businesses to create their own commercials on line
and distribute them over a plethora of media including television and the
internet. MPEG-4 good for online distribution of large videos and video
recorded to flash memory. This is a video format used for video IPods,
uploading to YouTube and other social media networks, but keep
reading.MPEG-2 used for DVDs is a digital file format used to make DVD's.
An MPEG-2 digital video file burned onto a DVD will play video on a DVD
player as well as computer provided the computer has the ability to play
DVD's. Some computers with older DVD technology will have difficulty
reading newer DVD technology burned DVD's. MPEG-1 used for video CDs and
was the first video format that was mass marketed. It is rarely used
today but occasionally pops up. Many DVD players will play MPEG-1 but not
all can read this digital file format.H.261 was the first truly practical
digital video coding standard. In fact, all subsequent international
video encoding like MPEG-1, H.262, MPEG-2, H.263, MPEG-4, and H.264
(MPEG-4 Part 10) have been based closely on the H.261 design which is
seldom used any longer.H.263 is a video codec standard originally
designed as a low-bit rate compressed format for videoconferencing. H.263
has since found many applications on the internet: much Flash Video
content (as used on sites such as YouTube, Google Video, MySpace, etc.)
is encoded in this format.The original version of Real Video (which I
recommend you run away from) was based on H.263 up until the release of
Real Video 8. In other words, I tell you about H.263 so you can see the
legacy. H.264 also known as MPEG-4 Part 10, or as AVC is the next
enhanced codec developed for sharing video on the internet. H.264
provides a significant improvement in capability beyond H.263, the H.263
standard is now considered primarily a legacy design (although this is a
recent development). Most new videoconferencing products now include
H.264 as well as H.263 and H.261 capabilities. Primeau Productions uses H
264 video in a Quicktime format to send to webmasters for use encoding
Flash video on our client websites.Here is the bottom line. The above
digital video files are created using in computers including CCTV systems
and can be viewed with video editing software and video file converters.
H.264 technology is an excellent beginning file format for creating Flash
video. Video editing software programs can output various sizes of H.264
and be used several ways:1. A source video files to create a Flash video
for your website.2. A video file that can be emailed 3. A digital video
file that can be uploaded to social media like YouTube, Yahoo and
Viemo.4. To view a converted CCTV video codec in courtFlash video is a
web based digital video player that is cross platform which is why I
recommend its use for digital video content delivery on your
website.Although many digital editing programs like Final Cut, Vegas and
Premiere are capable of exporting finished video productions in Flash
video (.FLV), there is more to creating a complete Flash video than just
the video file.When a digital video file is created like a H.264 (encoded
to specifications of under 10 minutes and 1Gig) and upload to YouTube,
Yahoo, MetaCafe and Viemo, the H.264 file is converted to Flash video
during the upload process.Many services post PR video on their websites
now only accept Flash Video (.FLV) files. HTML 5 is out and nearly taking
over flash but we have a way to go yet.Just in case you are interested in
posting a Flash video on your website, following are the components you
need in addition to the .FLV video file. 1. The.html portion - the html
webpage that loads the flash player2. The .swf portion - the compiled
flash file for web (contains the flash video player). 3. The .flv portion
- the actual video file for the flash player.4. ac_runactivecontent.js -
the javascript file that loads the player into browsers A non video
production based software program made by Adobe called Flash and is used
to create graphics and video for websites. Flash Video is a file format
used to deliver video over the Internet using Adobe Flash Player. The
format has quickly established itself as the format of choice for
embedded video on the web. Notable users of the Flash Video format
include YouTube, Google Video, Yahoo, MetaCafe, Viemo, Reuters.com, and
many other news providers. Flash Video is viewable on most operating
systems, via the widely available Adobe Flash Player.Lastly, Theora
standardized is still in development and not used very often but still
worth mentioning to complete your understanding of the various digital
video file formats available today. What is an important take away is an
understanding of the file formats and multiple uses for digital video.
http://www.VideoForensicExpert.com

								
To top