Linux Journal: Approaches to a Linux PVR
Mar 07, 2003, 04:00 (0 Talkback[s])
(Other stories by Steve R. Hastings)
"I have been looking into how to set up a Linux personal video
recorder, or PVR. I don't have one working yet, but I have learned
a few things. Here are notes on the two approaches that look best
for a Linux PVR.
"My goal is to have the option of full-quality capture. Thus, I
am not interested in any solution based on USB; no USB solution can
capture full-size frames at full speed. USB 1.1 simply doesn't have
the bandwidth for real-time video capture, even with compression.
USB 2.0 does have the required bandwidth, but I haven't seen any
USB 2.0 TV capture devices. Also, I am not interested in any
solution that cannot capture stereo sound.
"However, the capture does not necessarily have to be highly
compressed. A two-step capture process would be perfectly adequate.
It could, for example, capture in some easy, low-compression format
and then automatically (in the middle of the night) re-encode the
video to something more space-efficient for long-term