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Comparing the DVRs?

Posted by Cliff on from the digital-line-up dept.

zonker asks: "We are getting hooked up with Dish Network Satellite TV this weekend and opted to go with one of their PVR (personal video recorder) plans. I started wondering if anyone has done any technical reviews or comparisons of the video quality (not just features) of the various digital video recorders out there (TiVo, DishPVR, ReplayTV, etc.). I am curious mostly about recorded video quality compared to the source video. All of them make claims to have various recording 'speeds' like VCR's. VCR's analog output is predictable (fuzzy recording with bits of static here and there, worse when signal quality is bad). However digital recorders have varying levels of pixelization. I was curious which ones fared the best and if anyone has comments on either systems?"

2 of 335 comments (clear)

  1. This highlights the quality issue... by Chasing+Amy · · Score: 5, Insightful

    Basically, when you purchase a PVR/DVR, you're leaving the quality choices up to the makers, as well as most other aspects of the hardware and how it operates.

    That's why I'm just going to build my own, as many others have. When I next upgrade my PC, I'll be cramming the old one into a small set-top case with a 10x DVD-ROM, a 100GB HD (or more, depending on pricing at the time), and an ATI All-in-Wonder Radeon (or Radeon 8500, depending on price at the time), a RealMagic Hollywood+ DVD decoder, an SB Audigy Value, and a NIC.

    Most of those components I already have, and some of them aren't really necessary--like the H+ card, since the ATI card also has iDCT-assisted DVD decoding, or the DVD drive at all if you just want a PVR and not an integrated DVD playback. I included the H+ card on the list just because I already have one, and I prefer its image quality on a standard TV although the ATI decoder looks better on a high-res TV, and because some rare titles have gklitches on one or the other just as some rare titles have glitches on regular set-top DVD players. Back-ups are always good. ;-)

    I can't speak for what Linux software is available, but I plan my device to be based on a stripped-down WinXP kernel once http://www.98lite.net finishes their Windows XP version of their famous installer, which lets you strip away almost any unneeded part of the typical install. As such, there's some great and polished software available that's perfect for this--the ATI card's MultiMedia Center, for instance, which includes an integrated Guide+ feature and DVR capabilities. The A-i-W 8500 card will even come with a remote that looks perfect, with an integrated mouse device and everything, and runs on RF instead of IR so you can even control the thing from another room through thick walls. Tom's Hardware recently gave a great review of a pre-release sample.

    Best of all, when you roll your own there's total control over encoding and NO COPY PROTECTION. Why worry about losing saved shows in case of disaster or hard drive malfunction or hardware burnout requiring a return to a stupid company which reformats the drive? That's what the NIC is for. Transfer them to a back-up HD or when DVD-R drives and media get cheap enough, burn 'em to DVD. Lots of flexibility and expandability. And I know from personal experience that the All-in-Wonder cards encode a beautiful MPEG-2 stream in real-time with a decent Athlon processor.

    The only feature my box won't have that a commercial PVR will is the record-shows-it-thinks-you-may-like feature, which I personally wouldn't find useful anyway. The only feature a DVR integrated with a satellite receiver has that my box won't is digital-to-digital transfer, which isn't such a huge boon when you remember that it doesn't save the digital feed from the satellite, it *re-encodes* it so that there'll be some quality issue anyway. sing high-quality analogue cables shouldn't introduce any more noticeable quality issues.

    It's something to consider, and maybe someone else here can point to Linux software with similar functions?

    --

    Chasing Amy
    (We all chase Amy...)
    "The more corrupt the state, the more numerous the laws"-Tacitus
  2. If you care about digital audio, no choices by jbridges · · Score: 4, Insightful

    Yes you could buy an external TiVo or ReplayTV for your DishNetwork box.

    But once you decide digital audio is important to you, then you MUST go with the integrated PVR since no external PVRs have digital audio input.

    And as others have said, same with zero loss video. Any external PVR is going to have to redigitize the video instead of recording the original data stream.

    You should have considered your PVR options before choosing DishNetwork since the DishPlayer software is not so great.