Tandberg - Now a unit of Ericsson, Tandberg Television enables video transcoding at IPTV headend. The company announced its iPlex transcoding solution at TelcoTV 2007, and demonstrated transcoding at IBC 2008 in September.
Texas Instruments - The chip giant has been a major early supporter of video transcoding technology with its DaVinci chip, which provides real-time transcoding capability on a single chip.
thePlatform - Owned by Comcast Interactive Media, this company offers transcoding, among other solutions. It's customers include Comcast (no surprise) and Verizon.
ViewCast - ViewCast just announced a new eight-channel system for network operators, governments and other large clients that transcodes to multiple video formats.
- read this blog post by Dan Rayburn of StreamingMedia.com and Frost & Sullivan