Talk:Video processing expansion card

Merging article

The subject at this article and TV tuner card are the same. Both discusses about input video streaming devices. TV Tuner card is simply a subset of those devices, but its articles is more complete than this one and has many pictures. So I propose merging "Video Processing expansion card" into "TV Tuner card" and then renaming it.

This redundancy has already been noticed at the section below

thesis section

Moving this material to discussion. It needs sourcing.

"allows the connection of a digital or analog source of video to a computer for the purpose of importing video into the computer for storage and/or editing."

Ste4k 18:33, 18 July 2006 (UTC)

source leads

• This book can be sourced for DAC material if necessary: Tocci, Ronald J. (1991). Digital systems. Englewood Cliffs, N.J. ; Prentice-Hall. ISBN 0-13-213133-1.
• This site has leads for material in thesis: http://www.aboutvideoediting.com/
• This article is another for leads: http://computer.howstuffworks.com/video-editing.htm

...Ste4k 18:44, 18 July 2006 (UTC)

History

Does anyone know the first capture card available to the public and when it was made available? --Paul Keith 17:52, 10 August 2006 (UTC)

The first video capture card available to the public is thought to be a Sun Microsystems model designed by then-Sun employees in Raleigh, North Carolina about mid-1994. The Sun design team was acquired by Multimedia Access Corporation of Dallas, TX shortly after its introduction, possibly before it was actually marketed by Sun (unknown). The group was incorporated as Osprey Technologies, a wholly owned subsidiary of Multimedia Access Corporation (MMAC). Early capture cards were produced in various models for Sun Sparc-based desktop computers, and marketed exclusively through Sun. One model was adapted for conventional PCs and marked and marketed as the Osprey 1000. The workhorse Osprey 100 followed shortly thereaafter, and it is still produced today.

Osprey cards were included in the early internet streaming starter kits then available from Progressive Networks (later known as Real Networks)and from Microsoft. Some later models were developed in partnerships with Microsoft and others and initially restricted to encoder products from their respective sponsors. One variant of the Osprey 1000 included a hardware-assisted Real Media encoder; this was important when a "fast" PC was clocked at 133 mHz. There was also a version of the Model 1000 that has an on-board videoconference codec. It was the first single-board videoconference codec and was often paired with ISDN interface cards before the Internet was fast or available enough to replace ISDN for many vieo transport applications.

Multimedia Access Corporation was later renamed ViewCast Corporation and the Osprey brand continues as the company's board level capture device brand. Some of the original Sun engineers are still engaged in new Osprey product development. Mhershey 03:57, 30 May 2007 (UTC)

TV Tuner

Is a Video Capture Card the same as a TV Tuner? Because we already have a page for that, and it has nice pictures and everything. --Sean Gray 11:03, 8 November 2006 (UTC)

Content was recently added to the Wiki video processing expansion card section clarifying the difference between a Capture card and a Tuner card. The essential difference is that a capture card accepts baseband analog video (composite, S-video, analog component) or digital (SDI, HDMI, etc) video, vs. off-the-air or analog-cable-provided modulated carrier video which must first be de-modulated (recovered) from the RF carrier. The function of the tuner is to recover the baseband video and audio back into its original baseband form; circuits downstream from the tuner are essentially identical on Capture and Tuner cards. Mhershey 04:05, 30 May 2007 (UTC)