THE VALUE OF SOFTWARE-BASED VIDEO CODECS
S. Ann Earon, Ph.D.
President, Telemanagement Resources International Inc.
With the advent of new video conferencing and collaborative technology products, a discussion has begun to revolve around the value of a software-based architecture versus a hardware based system.
For years, many video conferencing vendors convinced customers that the hardware-based system was the right tool for conferencing and that software-based systems had too many limitations. However, with the:
- proliferation of bandwidth,
- the flexibility of the Internet protocol,
- increased processing capability of general-purpose processors & standard operating systems,
- the introduction of tablets,
- the capability for general-purpose processors to handle video related tasks, and
- an awareness of contemporary conferencing
requirements, vendors have now changed their tune and introduced an open and flexible collaboration platform based on software-based codecs instead of dedicated hardware- based codecs for video conferencing.
The purpose of this paper is to understand the value of software-based codecs as part of today’s collaborative tools.
Meeting Customer Needs
The strongest message received from long-term video conferencing users is that the video conferencing ‘talkingheads’ experience is not a sufficiently compelling reason to justify installation of video conferencing equipment in substantially more than a few select conference rooms. Users state that the value in meetings has as much, or more, to do with the information handled in the meetings as it has to do with seeing people. That information might be in the form of PowerPoint presentations, paper handouts, information from a tablet, video clips and photos, or notes on a whiteboard. While vendors have offered peripheral equipment to meet these applications, users feel these needs are not peripheral to their business, but an integral part of their business. As a result, new video conferencing systems have been developed embracing the sharing of meeting content as an equal partner with the transmission of audio and video. But why develop these new systems on software-based codecs?
The Software-Based Solution
Software-based solutions can be resident on many types of general-purpose devices including PCs, appliances, servers and hand-held devices etc. Software-based video codecs can be used for conference room, desktop and mobile applications.
Historically, general-purpose devices have been quite lame with respect to handling motion video. It is only in the last few years that graphics and CPU processing power has approached the level of sophistication and power to do justice to quality TV images, an evolution that has recently been driven by the emergence of DVD playback on the PC, video gaming devices, handheld communication devices, and a variety of social media offerings.
The PC is not new to video conferencing. In 1989, VTEL offered the first PC-based video conferencing system. In 1993, PictureTel introduced the System 1000, based on personal computer architecture. In 1997, VCON invented the first IP-only desktop videoconferencing system for videoconferencing over large organizational networks. However, historically video vendors have been very reserved about exposing the PC inside to the video conferencing user, in part out of concern to protect customers from some of the pitfalls of having a personal computer in a group environment, and in part because until recently the PC leant itself poorly to the seamless integration of motion video and PC-generated content.
In parallel with the general-purpose devices maturing as a standards-based motion-video platform, the Web has grown to become an indispensable source of information for business. By merging general-purpose processing functionality with video conferencing functionality, and opening the general-purpose device to the conferenceroom use, the resources on a company’s local area network are as accessible in the conference room as when sitting at one’s desk. The result is a much better integrated solution than simply attaching a PC as an afterthought to a ‘talking heads’ video conferencing system.
Web access, access to networked files and databases, and the use of attached devices, such as whiteboards connected with a local or networked printer, provide end users with value from the collaboration system, even for single-room, non-video meetings.
It’s economics that led to the development of Telestream’s original multi-thousand dollar FlipFactory box. Today, they offer video transcoding workflow solutions as software downloads. And, that is precisely what they are, transcoding solutions, which do not perform as well as using the matching codec employed at the origination site.
Incompatibility between codecs is not going to fade away as technology evolves. Instead, codecs will become more prolific and complex to the point where it comes economically impossible to build chip sets that keep up with software development.
When a system is designed with all these aspects in mind, use of these valuable meeting tools in video calls is a seamless and natural extension of their everyday use in a regular meeting room. Apart from the sheer value of getting more use out of the equipment, this has the added benefit of acclimatizing users to the equipment in conditions other than during a video call, since for some novice or occasional users a video call may be a ‘special event’ viewed with some trepidation.
STAY TUNED FOR PART II….