Small addition: The story at The Register mentioned elsewhere in this thread states that this recorder is targeted at
"digital video editing and archiving in particular"
When capturing video from a hi-8, digital-8 or mini-dv camera, in motion-jpeg or similar format, to retain sufficient quality, you need between 2.5 and 4 Mbyte/sec. For mini-dv, the rate is fixed at 3.5 Mbyte/sec. The format is fixed, it is determined by what you capturing hardware gives you.
Then, 4700 Mbytes at 3.5 Mbyte/sec gives you the 22 minutes I mentioned.
No, either in
- Motion JPEG (the native format my analogue video capture card produces).
Data rate between 2 Mbyte/sec and 3.5Mbyte/sec.
- DV format (This format is spit out by current mini-DV and digital-8 video cameras,
at a fixed rate of 3.5 Mbyte/sec.
These formats do not use inter-frame dependencies, that's why they need this high datarates. In contrast, mpeg1, mpeg2, divx and the like DO use inter frame dependencies, and as a result, use much lower data rates for the same quality, as low as 2 Mbit/sec (or.5 Mbyte/sec, one-seventh of te mini-dv original.
The native dvd-rom format also uses (a form of) mpeg2, at any rate, that format uses inter frame dependencies, and therefore can get away with a lower datarate.
A hobby of mine is to edit home videos on my PC. 4.7 gigs is not a lot for me... It holds 22 minutes of video. So, to hold a 90 minutes tape, I need 4 of these DVDs.
As usual, people find applications for these seemingly huge storage devices at at least the speed at which storage sizes increase... You give me the storage space, and trust me, I will fill it up for you:-)
Dutch news has that some 10% of bigger companies have shut down their email systems as a result of the "I LOVE YOU" virus already. It is on the radio news right now, as the first item.
If you have a chance, take a look at the virus code, and see what some 300 lines of visual basic can cost industry in say a 24 hour period.
In fact, as I write this, a guy from our support department comes in and hands me a printed "Virus Alert" piece of paper! It says the virus sends itself to all addresses in you address book. Having looked at the code, the virus also checks if you run an IRC client, and sends itself to everyone in all channels you are in.
The virus also changes all.MP2.MP3.CSS.HTML and.JPG files, and renames them to.VBS files!
Hmmm... there seems to be some really bored kid out there somewhere... the first line of the virus script reads: rem barok -loveletter(vbe)
I can recommend that book also. It is in full on his webpage, but the paper version reads easier. It also comes with nice pictures, that have nothing to do with the topic of the book whatsoever, but are nice to see anyway. But seriously, lots of the thoughts and experiences in that book are worth while. In any case, Phil is a gifted writer, not afraid to expose stupidity if he encounters it somewhere.
Slashdot Mirror
Small addition: The story at The Register mentioned elsewhere in this thread states that this recorder is targeted at
"digital video editing and archiving in particular"
When capturing video from a hi-8, digital-8 or mini-dv camera, in motion-jpeg or similar format, to retain sufficient quality, you need between 2.5 and 4 Mbyte/sec. For mini-dv, the rate is fixed at 3.5 Mbyte/sec. The format is fixed, it is determined by what you capturing hardware gives you.
Then, 4700 Mbytes at 3.5 Mbyte/sec gives you the 22 minutes I mentioned.
No, either in
.5 Mbyte/sec, one-seventh of te mini-dv original.
- Motion JPEG (the native format my analogue video capture card produces).
Data rate between 2 Mbyte/sec and 3.5Mbyte/sec.
- DV format (This format is spit out by current mini-DV and digital-8 video cameras,
at a fixed rate of 3.5 Mbyte/sec.
These formats do not use inter-frame dependencies, that's why they need this high datarates. In contrast, mpeg1, mpeg2, divx and the like DO use inter frame dependencies, and as a result, use much lower data rates for the same quality, as low as 2 Mbit/sec (or
The native dvd-rom format also uses (a form of) mpeg2, at any rate, that format uses inter frame dependencies, and therefore can get away with a lower datarate.
A hobby of mine is to edit home videos on my PC. 4.7 gigs is not a lot for me... It holds 22 minutes of video. So, to hold a 90 minutes tape, I need 4 of these DVDs.
:-)
As usual, people find applications for these seemingly huge storage devices at at least the speed at which storage sizes increase... You give me the storage space, and trust me, I will fill it up for you
Hi,
Just wondering... anybody any idea what this writer will cost? And, what do you pay for a blank writable 4.7 gig DVD these days?
Dutch news has that some 10% of bigger companies have shut down their email systems as a result of the "I LOVE YOU" virus already. It is on the radio news right now, as the first item.
.MP2 .MP3 .CSS .HTML and .JPG files, and renames them to .VBS files!
If you have a chance, take a look at the virus code, and see what some 300 lines of visual basic can cost industry in say a 24 hour period.
In fact, as I write this, a guy from our support department comes in and hands me a printed "Virus Alert" piece of paper! It says the virus sends itself to all addresses in you address book. Having looked at the code, the virus also checks if you run an IRC client, and sends itself to everyone in all channels you are in.
The virus also changes all
Hmmm... there seems to be some really bored kid out there somewhere... the first line of the virus script reads:
rem barok -loveletter(vbe)
Ron Sprenkels (sprenkel@cs.utwente.nl)
I can recommend that book also. It is in full on his webpage, but the paper version reads easier. It also comes with nice pictures, that have nothing to do with the topic of the book whatsoever, but are nice to see anyway. But seriously, lots of the thoughts and experiences in that book are worth while. In any case, Phil is a gifted writer, not afraid to expose stupidity if he encounters it somewhere.
Nice to see that every system has its weaknesses... :-)