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View Full Version : MovieBeam Problem With DirecTivo


chackett
03-28-2006, 05:18 PM
I have a very interesting problem. I did a quick search, and didn't see this exact problem described. It's kind of obscure, so maybe I didn't use the right search terms.

Anyway, here's the setup. I have a Phillips DirecTV, dual tuner. I don't remember the model number, but it's a couple years old, and it's silver.

My wife and I picked up a MovieBeam from the Atlanta Home Show the other day for $99.00, no subscription, no set up. Just $99. Figure I'll give it a go.

So the MovieBeam has only a single set of composite inputs, and when the moviebeam is in standby, it passes the signal through.

My TV has an s-video input, a single set of composite inputs, and an RF input.

The only way to hook everything up is to take the composite video out of the tivo and plug that into the moviebeam, and plug the composite out of the moviebeam into the tv.

Seems all well and good enough. However, there's this really strange scrolling pattern on the screen. It's not random, or static, or interference or "noise." It's very intentional, and I don't know if this pattern is coming from the Tivo or the MovieBeam.

The strange pattern is present when the moviebeam is on, and I'm viewing a picture or movie from the moviebeam. However, if I disconnect the video cable at the input (from the Tivo) at the back of the moviebeam box, the strange scrolling bar dissappears, and I can watch the moviebeam video without interference.

However, when the moviebeam is in standby mode, and the video signal is simply being passed through the moviebeam box, the strange scroling bar is gone.

Here is a link to a short video clip of my tv that shows the scrolling bar. Notice toward the top of the screen training from the top of the scrolling bar, is a thin, horizontal bar that is almost long enough to reach the next scrolling bar. And that it's followed by a fat part of the next thin line. It almost looks like it's supposed to represent a plug or something.

Has anyone seen anything like this before? I've called MovieBeam, and so far haven't been able to get in to the level 2 or three or whatever level tech that might be able to figure this out.

Here's the link:
.. well... ok it won't let me post a url until I make more posts ..

Thanks!
Chris Hackett

litzdog911
03-28-2006, 05:33 PM
Rather than pass the Tivo's video through your MovieBeam, try using a video switcher instead ....
http://www.radioshack.com/search/index.jsp?kwCatId=&kw=video%20switch

I'm guessing the scrolling bars are caused by a ground loop when your Tivo, MovieBeam and TV connected as you've described. A video switch box should provide better isolation, and it won't matter if your MovieBeam is on or off. Some of the nicer switches can even memorize your remote commands so that they automatically switch to the desired device.

chackett
03-28-2006, 05:51 PM
Maybe by the time this thread is done, I'll have made enough posts that I can enter the URl for the short video.

Does a ground loop, like your suggesting, manifest it's self in a totally non-random, obviously intentional, and machine generated way?

As I mentioned, where ever this scrolling bar is coming from, it's not by accident. I could believe that it's caused by a ground loop, if one of these devices has the ability to detect a ground loop, and these scrolling bars is a method of indicating that there's a detected ground loop. While I certianly don't know anything about ground loops, I have a hard time believing that this is just the product of a ground loop....

Thanks for the suggestion about the switcher. I think if I have to get another device, I'll probably just send the MovieBeam back.

Thanks again for the reply litzdog911. I appreciate it.

Chris Hackett

Gunnyman
03-28-2006, 05:59 PM
I bet it's not a groundloop but macrovision.
I bet you would see the same thing thru a VCR.

chackett
03-28-2006, 06:01 PM
That's intersting. I guess I'll have to do a google search to see what the heck "macrovision" is and if there's anything that can be done to correct or avoid "Macrovision" whatever the heck that is.

Thanks!
Chris Hackett

Gunnyman
03-28-2006, 06:04 PM
macrovision is copy protection similar to what is on dvd's to prevent you from dumping them to video tape. A switch like another poster mentioned SHOULD make the "interference" go away

chackett
03-28-2006, 06:16 PM
Is Macrovision copy protection something that Tivo implements? Or is it something that's present in video signals that the Tivo recieves (and passes along to any device it's connected to?). I guess I'm trying to figure out which device is producing these visible "macrovision" images .. the Tivo or the MovieBeam.

If I'm watching the moviebeam signal, and I see the "macrovision" images, and while I'm watching a moviebeam signal (with Macrovision), I disconnect the composit video input, that's coming from the Tivo, the Macrovision goes away. This would lead me to believe the "macrovision" is coming from my Tivo.

If however, I leave everything all set up as orignally described, and the moviebeam device is off (or in "standby"), and the Tivo signal is passed through the moviebeam, the "macrovision" images are NOT present. This would lead me to believe the macrovision is coming from the MovieBeam.

Strange.

Chris Hackett

Gunnyman
03-28-2006, 06:28 PM
it's probably movie beam's copy protection
it can "detect" that it is plugged into something besides a television.

chackett
03-28-2006, 07:30 PM
Huh. That would be interesting. The only output that is connected to the MovieBeam is the output (composite) to the TV. The TiVo is connected to the MovieBeam input. I don't see how the MovieBeam device could detect and figure that to be a copy protection issue. Oh well, I'm sure I don't know .. that's for sure. Hopefully someone at MovieBeam will figure this out .. or they'll be getting the box back.

Thanks!
Chris Hackett

Gunnyman
03-28-2006, 07:58 PM
ok why is tivo connected to the moviebeam input?

chackett
03-28-2006, 08:15 PM
Well, how else would you recommend that I connect these two devices to my TV? The MovieBeam has composite video-in inputs, and the Tivo has composite out (but not any video inputs). I'm not sure how else I can connect these two devices to my TV without pluging the Tivo into the moviebeam, and the moviebeam into the tv.

I don't believe there's any other way to do it, given my current inputs and outputs.

TV:
1 Composite input
1 SVideo input
2 RF input

Moviebeam:
1 composite input
1 composite output
1 component output
1 SVideo Out
1 HDMI output
1 Digital / Optical output

chackett
03-28-2006, 08:17 PM
Oh ... hey. I bet I have enough posts now to post the URL ..

http://www.chackett.com/moviebeamprob.mov

JimSpence
03-28-2006, 08:20 PM
Maybe a new TV is needed. One with multiple inputs. :)

Or get a switch box for selecting either TiVo or MovieBeam.

dtremain
03-28-2006, 08:26 PM
Well, how else would you recommend that I connect these two devices to my TV? The MovieBeam has composite video-in inputs, and the Tivo has composite out (but not any video inputs). I'm not sure how else I can connect these two devices to my TV without pluging the Tivo into the moviebeam, and the moviebeam into the tv.

I don't believe there's any other way to do it, given my current inputs and outputs.

TV:
1 Composite input
1 SVideo input
2 RF input

Moviebeam:
1 composite input
1 composite output
1 component output
1 SVideo Out
1 HDMI output
1 Digital / Optical outputAs has already been suggested, buy a cheap switch at Radio Shack.

Gunnyman
03-28-2006, 08:28 PM
that's macrovision alright. I just saw the video