Digital Video Emerging
Streaming Media Technology

• The digital media video first hit the markets in the early 1980s with the first D-1 format from Sony.

• The early versions recorded an excellent standard video signal in a digital form rather than the earlier analog forms of high band.

• Due to its relatively higher costs, the unit was only used by big television networks.

• This was eventually replaced by a less expensive system which is the most notable Digital Betacam by Sony which used compressed data.

• This digital video is still very much used in the field of recording by television professionals.

• One of the first digital audio video services came from the QuickTime player from Apple.

• This was a computer based architecture for streaming media and time based data formats that had appeared in the year 1990.

• The earlier user level content tools were rather basic which required the analog source to be converted to digital form into a computer readable format and video extension.

• Although available in low quality the user digital video increased in popularity and quality with the release of high playback standards like MPEG and then followed the DV tape format which allowed recording directly to a digital data.

• A video digital camera is comprised of different imaging formats, such as the progressive and interlaced scan.

• The interlaced digital audio video cameras would record the image in an alternating set of lines like the lines with odd numbers are scanned first and then the lines with even number are scanned.

• The progressive scanning in the digital camera would record each frame as a distinctive one, where both the fields are identical.

• So, the interlaced video would capture twice the number of fields every second.

• This is the basic reason why a video has a real look because they draw images 60 times every second which is different to a film which records 25 progressive frames every second.