|
|
Posted by Jan Panteltje on 02/22/07 13:12
On a sunny day (Wed, 21 Feb 2007 10:02:45 -0500) it happened "Smarty"
<nobody@nobody.com> wrote in <sZydnTCBCcaIwkHYnZ2dnUVZ_rmdnZ2d@adelphia.com>:
>Blackmagic has introduced a very novel capture card called Intensity for
>$249 which has an HDMI input and an HDMI output connector. It makes the
>impressive claim of eliminating HDV compression penalties by directly
>capturing uncompressed 1920 X 1080 HD video directly from HDV camcorders (at
>least those which have an HDMI output port) as well as from other HD and SD
>video sources. It offers a number of other impressive features as well, in
>particular real-time down-conversion from HD into SD and the ability to sync
>and switch 2 HDV camcorders with 2 cards in a studio setting. It provides
>HDMI output to drive monitors, projectors, etc. Macs and PCs are supported,
>but do require one newer PCI Express slot. It would appear to allow
>off-the-air HD capture external to set-top boxes equipped with HDMI (and
>DVI) outputs.
>
>Since copyright materials could be captured and digitized, the advertising
>plainly excludes protected content, and says the board will not be useful
>for those purposes.
>
>More info at: http://www.blackmagic-design.com/products/intensity/
Hi, thank you for the interesting posting.
For 1920x1080 @ 25fps I was thinking about the transfer rate for the disk
system that is required.
Let's see:
1920 x 1080 x 25 x 24 (bit per pixel) / 8 = 155 520 000 bytes / second,
is about 155 MB /s (1 244 160 000 bps, or 1.24 Gbits / s)
It seems the disk system will have to be able to do about 200 MB/s sustained.
Not every harddisk will sustain this, I just looked around at the seagate
site for a usable disk...
It is not an interface issue (SATA or SCSI), SATA goes to 3Gb/s, but more
a drive issue.
Any comments?
Navigation:
[Reply to this message]
|