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Linux Journal: Approaches to a Linux PVR

Mar 07, 2003, 04:00 (0 Talkback[s])
(Other stories by Steve R. Hastings)


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"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 storage..."

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