TiVO picture quality is simply worse than cable direct connected to TV

[DaveCampbell]

I purchased a TiVO Series 2 last week and am REALLY disappointed in the quality of the picture, especially compared to the cable connected directly to the back of the TV.

It is so bad, that the tennis ball 'disappeared' into the pixelated green of the court while watching the US Open today. You literally could not see the tennis ball being hit back and forth.

The same signal that goes into the TiVO goes into the TV, using a splitter. Watching it directly from the cable looks great, watching 'Live TV' through the TiVO looks like crap. I record in the highest quality, FWIW.

What's the deal? All I have is composite inputs to the TV, no S-Video, but I can't believe that this low quality picture is normal. I was very excited to make this investment, but my wife and kids think it stinks because the picture is so bad.

Any ideas how to improve the picture quality?

I have standard cable service, no cable box, etc. Would an in-line amplifier help at all? Or is the digitized, pixelated, kind of fuzzy picture normal for TiVO?

Thanks in advance for any help.

[gtrogue]

The quality of the TiVo output is always going to be worse than the quality of the signal without Tivo. The Tivo is performing AD/DA conversions and in between compressing the signal. There isn't any magic to the way it works and throwing away video information is always going to result in degredation.

That being said, high quality, which is what the live buffer always records at, doesn't look too bad and should look pretty close to the signal without Tivo on smaller (<35") NTSC TV's. If live tv and other high quality recordings look as bad as you describe then you may have a problem with your hardware.

[DaveCampbell]

Thanks for the reply. Doing just some basic Googling revealed that a line amplifier may be called for. I have added one more branch to the split so maybe I hit a threshold of sorts.

I did notice on some FAQ somewhere that the TiVO input amps are quite different than those found on the basic TV, so a signal that appears OK on a TV may be not OK on the TiVO. That may be precisely my situation.

I was surprised I didn't get more response to what appears a very basic cable video type of question, but I appreciate the time you took to reply.

So now I'm scouting around for a decent cable amplifier. Best deal appears to be some older generation Viewsonics for about $20 on ebay.

I think I need the most basic one, as I don't have broadband, no need for 2-way, etc. What the heck is the highest frequency I'd need to worry about? My cable system goes to channel 99. Is that above 450 MHz? I ask because the least expensive cable amps go to 450 MHz.

Thanks again. I'll report back any useful info.

[gtrogue]

In your case I believe that channel 94 is the highest frequency channel. It is 643.25 MHz. The aural frequency is 647.75 MHz. The full bandwidth is 642 MHz - 648 MHz.

Each analog channel uses 6 MHz of bandwidth. Digital cable can carry up to 10 channels in that same space.

[Dennis Wilkinson]

Originally posted by DaveCampbell
I was surprised I didn't get more response to what appears a very basic cable video type of question, but I appreciate the time you took to reply.

That's most likely because the question is so frequently asked around here. If you do a search for "picture quality" you'll probably find more information than you'd ever want to read.

Long story short -- get adequate signal level into the TiVo's RF input if you're using that, and calibrate your TV.

[DaveCampbell]

I saw one valid post about 'picture quality', and it seemed focused on the sharpness debate. But the original poster seemed to be asking the exact same question I did, "why does my new TiVO have such poor video quality"?

This seems like such a fundamental issue, I'm surprised the topic of signal level is not more prominent on TiVO forums or the TiVO site, generally.

I'm fairly technical, but I must admit I was considering returning the TiVO simply assuming the loss of quality was just the cost of time-shifting, and something I didn't find worth it.

Thanks for your inputs, I'll report back.

[bkdtv]

Make sure you don't have your sharpness level on the TV set too high, as that will make any artifacts much more obvious.

[gtrogue]

Also, make sure you've performed at least a basic calibration on your TV.

[skanter]

While some artifacting is inevitable, the effect on PQ should be minimal
unless viewed on a very large screen. I've watched the US Open on a 27"
Sony and it looks fine.

I would look for a hardware problem...

[Dennis Wilkinson]

Originally posted by DaveCampbell
This seems like such a fundamental issue, I'm surprised the topic of signal level is not more prominent on TiVO forums or the TiVO site, generally.

I know I've responded to more than a dozen image quality questions on these forums, so it does come up pretty often. As to why it doesn't show up on TiVo's site, that may have to do with how many people connect directly to the RF port v. how many are using S-Video or composite out of a cable box. I don't know what that mix is, but I'd guess there are more people in the "cable with box" category than the "cable without box" category.

[DaveCampbell]

Let's slow down on the calibration and sharpness ideas. I'm sure they are not trivial topics, but my situation is at a much more basic level. I'm a technologist, and one thing I hate about technology is how easy simple things can get blown up into appearing as very complicated matters.

My situation is this:

I have basic cable that went into my TV:
- Picture on TV Great.

I buy a TiVO, split the cable to TV and TiVO:
- Picture from TiVO Bad.
- Picture from cable to TV: Good (something noticeable).

That's it. That's the data.

Research says RF signal might need to be boosted. I'm OK with that.

Experiment: Hook the cable directly to TiVO, no splitter to TV.
Result: Picture MUCH better.
Conclusion: Splitting the signal affected the signal level.
Solution: Boost the signal. I'm OK with that.

I'm currently bidding on an amplifier.

Stay tuned.

[skanter]

Originally posted by DaveCampbell
Let's slow down on the calibration and sharpness ideas. I'm sure they are not trivial topics, but my situation is at a much more basic level. I'm a technologist, and one thing I hate about technology is how easy simple things can get blown up into appearing as very complicated matters.

My situation is this:

I have basic cable that went into my TV:
- Picture on TV Great.

I buy a TiVO, split the cable to TV and TiVO:
- Picture from TiVO Bad.
- Picture from cable to TV: Good (something noticeable).

That's it. That's the data.

Research says RF signal might need to be boosted. I'm OK with that.

Experiment: Hook the cable directly to TiVO, no splitter to TV.
Result: Picture MUCH better.
Conclusion: Splitting the signal affected the signal level.
Solution: Boost the signal. I'm OK with that.

I'm currently bidding on an amplifier.

Stay tuned.

Forget the bidding. Go to Radio Shack and get an amplified splitter for about $35 and solve the problem immediately...

[ccwf]

Originally posted by DaveCampbell
I saw one valid post about 'picture quality', and it seemed focused on the sharpness debate. But the original poster seemed to be asking the exact same question I did, "why does my new TiVO have such poor video quality"?

This seems like such a fundamental issue, I'm surprised the topic of signal level is not more prominent on TiVO forums or the TiVO site, generally. There's an entry on picture quality in the TiVo top answers (http://www.web-i18n.net/T) topic that's always one of the first topics at the beginning/top of this forum.

The original poster's problem sounds like a signal issue rather than lack of calibration. Lack of calibration would not make the tennis ball disappear. I (and a number of other regulars here) record a great deal of tennis on TiVo, and the behavior described is certainly not normal.

In addition to the possibility of getting an amp as others have suggested, also see if your local cable company will send a technician out with a meter to measure your signal quality. My local cable company does that for free in my area.

[DaveCampbell]

Thanks again for the interest and responses. I did call my cable company, and they will add an amplifier for $59.99 (spread over 3 payments!) and they do check the signal levels as part of that install, so that is good advice.

But I also just won not one, but TWO signal amplifiers on eBay for $20 ea. One is a 4-port, the other an 8-port. I noticed the prices at Radio Shack were fairly high, and I like doing as much business on ebay as possible.

When I did connect the cable DIRECTLY to the TiVO, the quality was MUCH better. I watched some golf, and saw the ball easily, so I think the tennis ball will now be visible when I get the signal level up.

After I get over this little bump, I'll move on to the Wireless USB thing, and then an issue with a wireless remote extender, so the TiVO can be used in an adjacent room. I already have a set of audio / video cables run through the wall and that works fine.

Again, I'll let you know how this signal thing goes.

[gtrogue]

Originally posted by DaveCampbell

I'm currently bidding on an amplifier.

Stay tuned.

skanter is right. Go to RadioShack and get the thing. Why wait for bidding and shipping?

You may want to try a good, high quality splitter first. They are much cheaper than an amp and you can always return it if it doesn't work. A cheap splitter can attenuate the signal like you describe.

And I hate to break it to you but "technologists" don't have analog cable! ;)

[DaveCampbell]

I wasn't all that impressed by the value proposition for digital cable. It seemed fairly expensive and I really thought the configuration of the set-top was a nightmare.

Money actually matters as does my time (real technologists bill big bucks for their time) and I found a Viewsonic amplified splitter for $19 on ebay. I like to do what I can on ebay...support a great concept.

Just hooked it up a bit ago and it WORKS GREAT. Possibly even TOO hot. But now I can mess with the picture levels on my cheap TV to make it look better. But the TiVO picture quality is totally what I originally expected.

OK, bottom line:

Cable splitters beware...signal quality can degrade enough to hose the TiVO yet not be noticeable on a straight connection to a TV.

But it can easily be fixed with a powered signal amplifier. I bought mine on ebay from these guys:
http://www.cabletvamps.com

OK, now on to the wireless USB thing. I'll review the threads on that topic.

[skanter]

[QUOTE]Originally posted by DaveCampbell


Just hooked it up a bit ago and it WORKS GREAT. Possibly even TOO hot. But now I can mess with the picture levels on my cheap TV to make it look better. .



The $30 amp from Radio Shack is adjustable to the exact amount of signal amplification you need.

[Bytez]

Try using the Motorola Signal Booster for $50 after rebate at CompUSA or circuit city for $50, search for: motorola signal booster

Many have said that it improves their signal, great reviews and for a decent price!. :up: I currently have 2 splitters connected to this (one for my cable mode, and 2 for televisions), my Tivo is setup like yours and the channels look very clear on my 27" Sony.

[Alex_Select]

I am running a Tivo Series 2 and I have it connected from the cable box to the Tivo and then to the TV completely with S-Video and then HQ RCA for L-R Audio. This picture is horrible! When the sceen is black, you can especially notice all kinds of lines and what looks like static - very subtle. I plugged in the TV directly to the cable box, and WOW what a sharp, and crisp picture. So would the problem still be the cable strength?

[skanter]

Originally posted by Alex_Select
I am running a Tivo Series 2 and I have it connected from the cable box to the Tivo and then to the TV completely with S-Video and then HQ RCA for L-R Audio. This picture is horrible! When the sceen is black, you can especially notice all kinds of lines and what looks like static - very subtle. I plugged in the TV directly to the cable box, and WOW what a sharp, and crisp picture. So would the problem still be the cable strength?

Are you using Best Quality on Tivo? What size TV? PQ could be slightly degraded (depending on TV size), but certainly not "horrible".

[Bytez]

What cable did you use to output from cable box to tivo? I fixed those annoying lines when I went from rca to coaxial from cable box ---> tivo.

[Alex_Select]

Yes High Quality, 32in Sony.

[Alex_Select]

I am using S-Video throughout >>from cable box and then to TV!

[Bytez]

Try using a coaxial cable from cable box to tivo, and s-video from tivo to television.

[Alex_Select]

I'll try that and let you know....

[skanter]

Originally posted by Bytez
Try using a coaxial cable from cable box to tivo, and s-video from tivo to television.

Wouldn't the S-video from cable box be superior to coaxial? That's my setup and it looks fine.

[Alex_Select]

Originally posted by skanter
Wouldn't the S-video from cable box be superior to coaxial? That's my setup and it looks fine.

That's what I thought which is why I went with S-Video. But, I'll try coax directly and let you all know if there is a difference...

Alex

[skanter]

Originally posted by Alex_Select
That's what I thought which is why I went with S-Video. But, I'll try coax directly and let you all know if there is a difference...

Alex

I tried it both ways -- coax was a bit brighter, but S-Video was sharper and cleaner.

[Alex_Select]

...no difference...I'll try and adjust the settings on my TV itself.

[Alex_Select]

:(

That made a slight difference. When watching football the players look somewhat "pix-elated" especially the areas surrounding each individual player....it's strange. Anyway, I am watching via the coax, I think it's slightly better. Should I try RCA cables? Any other ideas..??

Thanks...

[scasarano]

Did you install the signal amp BEFORE or AFTER your splitter? I am thinking of getting a signal amp myself to improve my picture quality. I have a similar setup:

32" Toshiba Pureflat (2 Tuner PIP)
Series 2 Tivo
Motorola DCT2224 cable box
Monster Cable Splitter

Have had some problems with picture quality.

[Dennis Wilkinson]

Always, always, always amplify before you split. Amplifiers are pretty dumb beasties for the most part, and will amplify noise just as well as video, and most will introduce a little noise of their own. You want to amplify the cleanest signal possible, which usually means amplifying as soon as possible after the cable enters the home.

(The only time you'd want to amplify after a split would be if the signal coming into the split was exceedingly hot and amplification would distort the signal, but the signal post-split was too low. That'd be a very unusual case.)

[ccwf]

Originally posted by Alex_Select
That made a slight difference. When watching football the players look somewhat "pix-elated" especially the areas surrounding each individual player....it's strange. Anyway, I am watching via the coax, I think it's slightly better. Should I try RCA cables? Even at 32" and Best quality, digital artifacts will be somewhat noticeable and very noticeable during certain sequences. I would increase the quality to Best, use S-Video, and make calibrate the TV (especially, turn sharpness and contrast way down from factory default settings). Turning down sharpness doesn't make the digital artifacts go away, but it does make them less pronounced.

[Alex_Select]

Originally posted by scasarano
Did you install the signal amp BEFORE or AFTER your splitter? I am thinking of getting a signal amp myself to improve my picture quality. I have a similar setup:

32" Toshiba Pureflat (2 Tuner PIP)
Series 2 Tivo
Motorola DCT2224 cable box
Monster Cable Splitter

Have had some problems with picture quality.

I have a different setup. When the house was built (in 2001) I had it wired for Cat-5, Cable and Satellite. I all comes to a distribution point in the basement. I have a few different "Outside Feeds" and a few "Attic Feeds". I tried changing the cable and the input at the distribution point but there has been no difference. The distribution point is powered, so I am not sure if it has an amp inside it to boost the signal. Any suggestions?

[Dennis Wilkinson]

Originally posted by Alex_Select
The distribution point is powered, so I am not sure if it has an amp inside it to boost the signal.

Tough to say without knowing the model, but if all it does is split RF signals for distribution (i.e. it doesn't also handle IR forwarding, or act as a power injector for other powered devices on your cable system, or modulate line-level input signals onto a spare channel) then it most likely has an internal amp to compensate for the splits.

[DaveCampbell]

FULL REPORT FROM THE ORIGINAL POSTER:

I got an 8-port, powered cable amp and everything looks awesome (at least as good as it can given my equipment). Definitely install the amp BEFORE you split it, but with a multi-port, you get an independent fully-powered signal on ALL the ports. I got the unit for about $20 on ebay from cabletvamps.com, but I think they only sell newer stuff now, mine was some overstock from an older line.

But this unit does have a power supply, so make sure a 110V plug is convenient. It connects the power to the amp using a small coax cable which was supplied.

So now I'll have to go get that DVD to help with the calibration as it appears the colors are somewhat 'hot'. But with my cheap-o setup ($250 TV, $109 home theatre w/ DVD) I'm thrilled with the quality.

And just a few moments ago I setup the wireless USB thing:

The hardest thing was connecting the USB cable to the TiVO since the unit is tucked inside a small TV stand with no access from the back.

The TiVO detected the device, and the wireless router that was in the adjacent room. A few simple steps in the Setup area (mostly Test The Connection) and I was DONE.

My equipment:

Blitzz 802.11b wireless router - Walmart $30 on clearance
Netgear 802.11b USB Wireless Network thing (MA101) - $16 on ebay

Haven't done the Music and Pictures thing yet, that's next.

BOTTOM LINE(S)

- Don't make things more complicated than they need to be.
- Make sure TiVO gets a good hot signal.
- You don't need to spend a fortune to get decent quality results.
- You don't need to spend a fortune on all the extra gizmos either.

[qztwds]

Thanks everyone for the awesome thread. Lots of useful info. My PQ issue is similar but I have a 46" DLP rear proj wide screen? Does this solution still apply (amp) or just something I'll have to live with? I only want to Tivo the cable feed which PQ was great straight to TV but very poor once connected to Tivo (Live TV or recorded). I'm using a HQ Monster splitter from wall to TV (Input 1) and Tivo. Component from Tivo to TV (Input 2).

[DaveCampbell]

I can't speak to the specifics of your specific TV (type, size, etc.) but the science of electromagnetics propagation down a transmission line dictates that there will be signal attenuation on both branches when you introduce a simple splitter.

I suspect the signal power level on each branch was decreased when you split it, and both the TiVO and your TV are now receiving a less powerful signal than before you split.

This doesn't guarantee that the signal level going into the TiVO is now below some acceptable threshold, only increases the chance that it is.

In my case, the pre-split cable into the TiVO produced an excellent quality output, the post-split was crap. And I had it split like 4 ways so I'm not surprised.

After introducing the amplifier, it was back to excellent. Excellent doesn't mean perfect...it is slightly lower quality than the TiVO bypassed, but I understand that is as good as it gets. Barely noticeable, but it's obviously there, especially on dark regions (see banding and digitalization).

And I also got much better quality signal on all the branches, which I hadn't planned on.

I think most installations would benefit from an amplifier.

[qztwds]

Thanks for the fast response. I'll give it a go and report back.

[Alex_Select]

Any ideas on a the type of amplifier/splitter to buy...???

Like I stated previously, my setup entails a distribution center in the basement that splits/amplifies the signal to the various outlets. Should I place a amplifier on the one cable that goes to my main TV...in essence it would amplified twice so would this be an issue...??

Any suggestions woul be much appreciated...

Alex

[ducker]

I'm going to shamelessly bump this thread as it pretty much contains some of the best information currently in the "help" section for poor picture quality... something I didn't take in to account/look up prior to setting up my box. And my jaw dropped when I viewed live TV and the picture looked as if I was splitting my signal 10 times before it ever reached my Tivo.