Discussion Forums > Technology
external HD question
sdedalus83:
--- Quote from: ReyBrujo on November 05, 2009, 02:03:59 AM ---USB 2.0 transfer rate is around 480mbit/s (around 60mb/s). A 1080p video frame is around 2mb, streaming at 23/29 FPS requires between 46 and 60mb/s of transfer rate. This is not counting the sound channels and data information. Knowing that you will not always hit the 60mb/s USB 2 limit, my first guess is that the video will lag from time to time.
--- End quote ---
Please treat the above as lowbrow comedy. You don't stream raw video and audio from storage media.
BD 1X is 36Mb/s. 9MB/s for raw blu-ray playback from optical media. Considering the much higher compression and much lower bitrates of the typical 1080p BD sourced anime file, you probably don't need any more than 2 - 3 MB/s to ensure completely smooth playback.
The best transfer rates you'll get over USB 2.0 will be around 35 - 40 MB/s, an order of magnitude greater than the minimum.
Tatsujin:
--- Quote from: sdedalus83 on November 05, 2009, 02:40:14 AM ---
--- Quote from: ReyBrujo on November 05, 2009, 02:03:59 AM ---USB 2.0 transfer rate is around 480mbit/s (around 60mb/s). A 1080p video frame is around 2mb, streaming at 23/29 FPS requires between 46 and 60mb/s of transfer rate. This is not counting the sound channels and data information. Knowing that you will not always hit the 60mb/s USB 2 limit, my first guess is that the video will lag from time to time.
--- End quote ---
Please treat the above as lowbrow comedy. You don't stream raw video and audio from storage media.
BD 1X is 36Mb/s. 9MB/s for raw blu-ray playback from optical media. Considering the much higher compression and much lower bitrates of the typical 1080p BD sourced anime file, you probably don't need any more than 2 - 3 MB/s to ensure completely smooth playback.
The best transfer rates you'll get over USB 2.0 will be around 35 - 40 MB/s, an order of magnitude greater than the minimum.
--- End quote ---
Makes more sense. +1
ReyBrujo:
I stand corrected then!
kenshin-dono:
ya i have no problem viewing 1080p stuff on my several year old 500mb maxtor so i doubt these would have any problems
ive decided on the WD elements simply because it has none of the stupid BS bloatware the other stuff has. I heard the new WD mybooks actually cant have it removed with a simple format or anything either, which is just lame.
the only thing i cant decide on is the 1tb, or 1.5tb... it looks like the new models dont even make the 1.5's anymore, were they having problems with them?
xshadow i actually considered that sammy for a bit but i think it had a buncha bloatware backup software. Did it come pre-installed or were you able to use it without installing it?
Personally ive had good experiences with sammy products and their HD's are decent from what i hear. The only brand i generally hear really sucks is seagate. Theyve had some serious disasters in the past
--- Quote from: UrbanScythe on November 04, 2009, 08:22:24 PM ---Well i cant buy internal right now :( So first i need to ask How about playing 1080 BD anime on USB external ? Is it ok?
And i need to know is WESTERN DIGITAL My Book Essential 3.0 1000GB, USB2.0, 16MB cache, 7200rpm, WDBAAF0010HBK-EESN better extern hdd WESTERN DIGITAL 3,5" Elements Desktop 1000GB, USB2.0, 7200rpm WDE1UBK10000E and why? (I entering on hdd files very often. I dont care if its noisy or nice looking i just need stable disk to play HD films.)
--- End quote ---
im not sure about that 2nd model number you put up i cant find it, the first ones the new mybook essenstials and it frankly looks crappy to me. They got a buncha bloatware transfer programs on it that i hear you cant really remove. there was an older WDH1U10000N i belive that was reviewed well and didn't have all that crap
Arc-sama:
Personally I have no problems with Seagate. I have found in the past that they have high rpm speed for about the same price of lower rpm of other brands.
My 2TB external is a Seagate, though it's fairly new I have not seen any problem with it so far.
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