Editing ReplayTV (section)

==Hardware and features==
The "4000 Series" and "5000 Series" ReplayTV units have [[Ethernet]] connections that allow the user to stream shows to another similar ReplayTV unit within the same local network, transfer shows to another similar ReplayTV unit (either on the local network or across the Internet) or to a [[personal computer]]. This capability enables users to move recorded programs to PCs using third-party programs. These units also have the capability to automatically skip commercial advertisements during playback (known as "Commercial Advance", which was trademarked by the original company). This commercial advance feature used several heuristics to detect commercials and had an accuracy of about 90 to 95 percent. Recording of television programs could be accomplished either manually, or through use of the program guide using various criteria. Shows to be recorded could also be described via thematic categories. Shows could be recorded or lightly managed through MyReplayTV at my.replaytv.com<ref>{{Cite web |title=ReplayTV Is Back |url=https://www.forbes.com/2001/09/06/0906tentech.html |access-date=2023-08-22 |website=Forbes |language=en}}</ref>

The most recent "5500 Series" ReplayTV units had the ability to stream shows to another similar ReplayTV unit within the same local network, but when loaded with up-to-date system software they can no longer transfer shows to other ReplayTV units across the Internet. The "5500 Series" units have also had the automatic Commercial Advance feature removed in favor of a manual "Show|Nav" feature. The units are otherwise identical to the "5000 Series" units. System software releases prior to version 5.1 build 144 retain the original features even in 5500-series hardware devices, but the software is automatically updated to 5.1 build 144 via through-the-web software updates.

The "4000 Series", "5000 Series" and "5500 Series" ReplayTV units stored the content using MPEG2.
:*Video: [[mpeg2 video|mpeg2video]], yuv420p, 720x480, 29.97 frame/s, 7413&nbsp;kbit/s
:*Audio: mp2, 48000 Hz, stereo, 192&nbsp;kbit/s

The operating system used on the "4000 Series", "5000 Series" and "5500 Series" was [[Vxworks]].<ref>{{cite web|url=http://www.windriver.com/news/press/pr.html?ID=368 |title=Wind River Chosen to Deliver Software and Services to SONICblue's Revolutionary ReplayTV 4000 Digital Video Recorder |publisher=Windriver.com |date=2001-10-15 |access-date=2011-06-23}}</ref> Several versions of the software were released. Some older versions supported Commercial Advance even on newer units.