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Discussion in 'DIRECTV HD DVR/Receiver Discussion' started by JustinBrown, Sep 2, 2007.
Between Seagate and WD, which tends to be a quieter internal drive?
Use that one what support AAM and setup it as "quiet".
Either the Seagate DB35 or Western Digital drives with the part number ending in JB ( such as WD2500AAJB ) are designed for DVR's. Hope this answers your question.
Sure ? I saw SATA WD 320/500 GB AAJS and AAKS in D* and E* DVRs.
It's probably more correct to say that drives ending in JB are marketed for DVR's.
1) Are the external drives plug and play or do I have to perform any sw hacking to get the system to use the external drive instead of the internal drive?
2) Does the external drive have to be pre-formatted with SW?
I am hoping its as simple as powering down the unit, plugging in the external drive and the rebooting the system and reentering season passes and favorites and be done with it but that may be too hopeful..
Your hopes are right.
One more question about the compession issue. Am I correct in assuming that MPEG4 is more compressed than MPEG2?
In the context of DirecTV, it is safe to assume that an MPEG4 channel will be broadcast at a lower bitrate than an MPEG2 channel. So yes, it would be "more compressed."
OK, so what's next? MPEG6 or is it exponential? What has the "bitrate" to do with compression? And PQ?
MPEG5 is next in the numbering sequence, but it doesn't exist yet. The reason it goes from MPEG2 to MPEG4 is because MPEG3 was abandoned.
The higher the bitrate, the less compression is applied to the video, and the higher the PQ. The bitrate is the amount of data sent down for the channel in a given amount of time, usually measured in megabits per second (Mbps).
Sorry for the dumb question, what are season passes? Is that the season-long recording of a series?
Yes season passes are when you record the series of a show.
Season passes are actually TiVo.
Series links are the HR20 and R15.
You know, in theory MPEG-4 not only offers better compression but better quality than MPEG-2....win/win. It has more precsion in dealing with intra-frame artifacts and other items...however, this is all dependent on how the encoders are setup to capture the source. I can't say for sure but since bandwidth is the name of the game it has been told to me the use of MPEG-4 is for the better compression primarily by the MSOs.
Not just in theory, it's a fact. At the same bitrate, MPEG-4 will win every time. A lower bitrate MPEG-4 feed can even look better than a higher bitrate MPEG-2 feed.
Agreed....the theory was it depends on how they have the bit rate and also one of the other advantages MPEG-4 supports in coding of video objects with spatial and temporal scalability. MPEG-2 as you mentioned is more bit rate scalable, MPEG-4 lets them play/tweek at another level. I'm sure D* has worked out for them the best combo of bandwidth and improved quality over cable but my only point was that in trying to understand how much you can store on any given HDD size you would have to know alot about how D* and the MSOs are setting up the encoders.....with MPEG-4 there is many more variables to guess at. At the end of the day....I'm happy with the quality.
Anyway, HDDs are getting cheap.
Not really. The only thing that matters is the bitrate that the encoder is pumping out. All of the other options make no difference in the storage space.
I'm looking for quiet 750gb internal drive options for the HR-20 but can't find anything like this at newegg...is there no such thing yet at this capacity?
I guess it depends on your room, where you house them, etc., but I have bought two of the Seagate Free Agent 750 GB drives at NewEgg:
with this cable:
and they seem very quiet to me - I have no complaints at all!