SDTI stands for Serial Digital Transport Interface. It lets you send
data other than baseband video through SDI routers and other equipment.
The data will only be understood by another device that uses the same
SDTI format. In the case of HDCAM decks, the SDTI carries the
compressed video (plus audio, timeocde etc) so you can clone tapes over
SDTI without decompressing and re-compressing on the second VTR, which
does skip the generation loss - it is essentially just transferring
encoded digital data, much like a file copy. Of course, it will only
work between HDCAM VTRs, as nothing else will understand the SDTI, which
means it is no help if you need to insert captions or do any other
processing.
Ross
On 12/01/2011 12:41, ripvanmarlowe2000 wrote:
>
> This brings up something i've been interested in but have never been
> able to find out any solid information on, even from Sony. There is an
> SDTi interface card for HDW2000 HDCAM machines which supposedly
> circumvents the HDCAM compression and just takes a data stream or some
> such from one deck to the other without any generational loss. Does
> anyone know about or use this card for dubs or it's proper usage? Any
> source of information would be lovely. Maybe that might help you out
> too John?
>
> Cheers,
>
> Andi
>
> --- In Avid-L2@yahoogroups.com <mailto:Avid-L2%40yahoogroups.com>,
> "johnrobmoore" <bigfish@...> wrote:
> >
> > 5 generations sounds like the number I've seen bantered around but
> I've never dealt with it first hand. It's a moot point now I'm going
> to output to SR and we will keep that master in house for future re
> purposing. Since it's a comedy special I figure the lack of generation
> loss will make it even funnier. I've always felt bandwidth and comic
> impact are directly proportional. ;-)
> > I suppose I could always dub it to digibeta and avoid all generation
> loss (inside joke from a past life.)
> >
> > --- In Avid-L2@yahoogroups.com <mailto:Avid-L2%40yahoogroups.com>,
> "Terence Curren" <tcurren@> wrote:
> > >
> > >
> > > Try that again... You'll never seen the generation loss of 5
> passes on HDCAM once the video has ben mangled through the whole
> distribution process. And certainly not when viewing off the
> internet.... or on your iPhone... etc.
> > >
> > >
> > >
> > > --- In Avid-L2@yahoogroups.com <mailto:Avid-L2%40yahoogroups.com>,
> "Terence Curren" <tcurren@> wrote:
> > > >
> > > >
> > > > I've seen detectable noise in 5 generations. On the other hand
> you'll never
> > > > --- In Avid-L2@yahoogroups.com
> <mailto:Avid-L2%40yahoogroups.com>, John Moore <bigfish@> wrote:
> > > > >
> > > > > I know HDCam doesn't hold up well for multiple generations
> hence the SR format for better dubbing and extra audio channels. I've
> got a show shot on HDCam that will be closed captioned adding an extra
> generation. I prefer to output the edit master to HDCamSr and send
> that off as the source for the closed captioning dub to HDCam. Just
> curious if I'm being to anal about this. Anybody got any opinion on
> 3rd generation HDCam which would be the air master if I output to
> HDCam for the edit master before captioning?
> > > > >
> > > > > John Moore
> > > > >
> > > > > Barking Trout Productions
> > > > >
> > > > > Studio City, CA
> > > > >
> > > > > bigfish@
> > > > >
> > > > > [Non-text portions of this message have been removed]
> > > > >
> > > >
> > >
> >
>
>
[Non-text portions of this message have been removed]
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