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From: Paul on 17 Jan 2008 02:19
pc wrote:

>
> What about audio/video synch when using a VIVO? Is this often a
> problem?
>
> pc

The only thing I can suggest, is reading reviews for a product,
to see if anyone noticed a problem. I haven't done enough video
capture, to offer a comment on it.

You could also try searching on "lip sync", for more
feedback on the problem.

Paul
From: Phil Weldon on 17 Jan 2008 10:17
'T Shadow' wrote:
| > We need to be able to playback DVDs and VHS tapes (from an external
| > source, so I assume via video capture / passthrough to VGA???), as
| > well as powerpoint, avi, mpg, etc.. files. I would like the interface
| > to appear, on the screen, to be relatively seamless switching between
| > inputs / applications (ie. not having to mess around with windows
| > start menus, explorer etc. too much.)
_____

A turnkey solution is indeed needed. Seamless 'live switching' of video
sources will require some sort of synchronization. Since the system will
presumably be using consumer grade video sources, there will be no way of
synchronizing the video signals ahead of the switcher, so you will need some
sort of frame buffer for each signal to synch up the signals so that the
vertical intervals match up and switching can be done during the vertical
interval rather than between, for example, one frame at the beginning to a
second frame in the middle - not exactly a seamless transition as tearing
and image instability will appear. This CAN be done fairly inexpensively
these days (when this capability first became available, the cost was about
$50,000 US per signal - back when $50,000 US was real money), but a mere
VIVO display adapter will not do the job.

Phil Weldon

"T Shadow" <blackhole(a)nowhere.void.com> wrote in message
news:4788093d$0$9548$4c368faf(a)roadrunner.com...
| "drh" <drhoare(a)gmail.com> wrote in message
| news:0f69812c-af51-495d-a89d-0bf1b00278c9(a)e25g2000prg.googlegroups.com...
| > I am setting up a system for our school's auditorium that will be used
| > to project various forms of media onto our rear-projection screen, and
| > I'm looking for an ideal combination of software & hardware that would
| > accomplish it. (we have the projector permanently mounted, and only 1
| > VGA input on it)
| >
| > We need to be able to playback DVDs and VHS tapes (from an external
| > source, so I assume via video capture / passthrough to VGA???), as
| > well as powerpoint, avi, mpg, etc.. files. I would like the interface
| > to appear, on the screen, to be relatively seamless switching between
| > inputs / applications (ie. not having to mess around with windows
| > start menus, explorer etc. too much.)
| >
| > What video card / software / or even external hardware devices do you
| > think would be best...?
| >
| > Thanks for your advice!
| >
| > David Hoare
|
| Naturally you need a video card with a VGA out. Basically you just need
one
| that will display a resolution your projector can use.Overscan can be an
| issue but no experience with it.
|
| Don't see a need for cable switching. Only the VHS would require one. DVDs
| can be played from the computers drive. If it has to be by cable composite
| and S-video for the image, VHS and DVD respectively, and Y-cables for
| audio.
|
| If you want an all in one card solution you'll need a VIVO (Video In Video
| Out) card. The ATI All-In -Wonder is a VIVO card and also has an analog TV
| tuner. You could also get a separate capture or tuner card. Separate is
best
| IMHO. Or even USB but this means it would be outside the computer and USB
| drivers tend to have problems.
|
| Don't know about VIVO but tuner cards tend to come with remote controls.
The
| Remote Wonders that comes with ATI cards are RF(not infra red) if one is
| needed. Not needing to point at a sensor is a good thing.
|
| I'm not aware of any program that will play all those formats. It easy to
| put Icons on the desktop and go between the programs. You'd probably be
| using 3 or 4. One for displaying the live analog, one for DVD & digital
| files and another for Power Point. Maybe Adobe Acrobat for .PDF. It's also
| possible to associate the programs with keys on the remote. Capturing the
| VHS to a file ahead of time would eliminate one program but you may get
into
| Macrovision copy protection and probably copyright issues. Except for
Power
| Point & Acrobat the software that comes with ATI cards will probably do
| what you want. I don't use it but the ATI software also comes with
Easylook
| which is for using the computer while viewing on a TV(but displays though
| the monitor too) that may be useful to you.
|
| Just trying to help outline things for you. This can be complex. Obviously
| my knowledge is ATIcentric. With the exception of Power Point, I think the
| ATI MMC software would come very close to what you want. Some of the newer
| ATI cards now come with different software CMC and I really can't say
| anything about it.
|
| Seems to me the need for what you want would be great enough someone would
| make a turn key solution. Good Luck.
|


From: Andy on 17 Jan 2008 19:54
<http://www.geniatech.com/pa/v2vpro.htm>
Geniatech V2VPRO is a interlace video to progressive video convertor
with 3:2 pull down film mode and 2:2 pull down graphic mode. NTSC/ PAL
/SECAM or MPEG video signals, and convert it into non-interlace for
direct display on progressive TV, VGA monitor or projectors.
Proprietary interfiled DEINTERLACE provides high quality picture, 50
to 60 HZ frame rate conversion, automatic source mode detection, OSD
(on screen display) adjustment menu. Various output signals format
(VGA, Progressive TV-out) are providing.

On Fri, 11 Jan 2008 06:57:04 -0800 (PST), drh <drhoare(a)gmail.com>
wrote:

>I am setting up a system for our school's auditorium that will be used
>to project various forms of media onto our rear-projection screen, and
>I'm looking for an ideal combination of software & hardware that would
>accomplish it. (we have the projector permanently mounted, and only 1
>VGA input on it)
>
>We need to be able to playback DVDs and VHS tapes (from an external
>source, so I assume via video capture / passthrough to VGA???), as
>well as powerpoint, avi, mpg, etc.. files. I would like the interface
>to appear, on the screen, to be relatively seamless switching between
>inputs / applications (ie. not having to mess around with windows
>start menus, explorer etc. too much.)
>
>What video card / software / or even external hardware devices do you
>think would be best...?
>
>Thanks for your advice!
>
>David Hoare
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