<p>The cabling is likely your problem.  The composite cables you're using (red, yellow, white) will only move analog signal from the set top box to the TV.  Likewise with RG59 or RG6 (coaxial).  </p>

<p>While both varieties of cables there are technically capable of passing digital signals (they don't care... they're just dumb cables), set top boxes typically only output 480i signals on those particular outputs.</p>

<p>They only way you're going to get 720p signal to your TV is by using one of the set top box's outputs capable of transmitting 720p: HDMI, DVI, VGA, or the component RCA outputs (red, green, blue).  Not all set top boxes have all of these.</p>

<p>Incidentally, if you don't have any HD content, the improvement will be marginal.  Standard 480i signals often just don't look that good when displayed on a large flat screen.</p>

CC BY-SA 3.0
2013-04-12T13:48:07.393Z
VGA is an analog component signal.  DVI can do both the analog signal in the format VGA uses (R/G/B/H/V) or the digital format that HDMI carries, but does so on different pins.  HDMI is pure digital.
AJ Henderson
CC BY-SA 3.0
2013-04-12T14:14:02.953Z
VGA *is* an analog connection, but what is transmitted itself may be at 720p(1280 × 720) or 1080p(1920 x 1080) resolution. Resampling a low-resolution "standard def" image (which is probably what the STB is sending over the composite cable) is a much bigger visual problem than analog/digital signal. If a 720p channel is being downsampled for output over composite and then stretched (resampled) by the tv set to native resolution, you have even more degradation.
horatio
CC BY-SA 3.0
2013-04-13T04:18:29.577Z
@horatio - you're totally right. Picture is being displayed with distortion. Actually channels are not that much capable which can be displayed in 1080p HDTV. This shows that I have to go for HD channels. But all channels (which are) being broadcasted are not HD channels. Only few are there and all local channels are being transmitted with STD. So there is no sense to watch them in HDTV. I realize after purchasing the HDTV (just purchased 3 days before). Currently I found temp solution to view STD channels in Movie Mode. Which dulls the brightness but shows clear picture. Any Suggestion?
NullPointer
CC BY-SA 3.0
2013-04-12T12:23:47.607Z
2013-04-12T14:19:06.287Z
2013-04-12T14:19:06.287Z
JoshP
<p>What you are talking about is upscaling and any current HDTV will do upscaling automatically.  Upscaling doesn't work miracles though, it will only make it so that the lower quality signal can be watched on a higher quality display.  It just multiplies the pixels so that a 720 by 480 (.9 pixel compressed) signal for example doesn't end up only taking up 1/4 of your screen.  It doesn't make the video any higher quality (it in fact will be slightly lower quality than if you were to watch it at the native resolution).</p>

<p>Your problem however is not lack of upscaling.  Your problem is using the wrong signal.  You are currently connecting your cable box to your TV through what is known as a composite cable.  It's an old type of analog connection that includes all the video information on the single yellow pin and sends left and right audio on the white and red pins respectively.  It is only capable of reproducing a standard definition signal so you are not actually using HD signals.</p>

<p>To benefit from 720 or 1080 signals, you will have to either use analog Component video (the red/green/blue connectors) or use an HDMI cable.  It's worth noting that as long as your TV and cable box both have component inputs/outputs, you can actually re-purpose the existing Composite cable to carry a component signal, but there will be no audio (you need a separate white/red pair for the audio, which is the same format as with the composite signal).</p>

<p>Once you fix the cable and hookup issue, you should see better image quality.  Personally, I'd recommend using HDMI if it is available on both your cable box and TV as that is the easiest to setup and will give a nice digital signal.</p>

CC BY-SA 3.0
2013-04-12T14:25:41.053Z
@Horatio - thanks for the fix, even though I know them in my head, I often type them backwards.  Too many C words.
AJ Henderson
CC BY-SA 3.0
2013-04-13T04:10:24.570Z
Thumbs up. Very nice explanation. Sure I will go for HDMI cable. The true fact (after researching and confirm by your explanation) if channels are not HD then I cannot view HD output from HDTV. I have to check after connecting HDMI cable to STB with HDTV.
NullPointer
CC BY-SA 3.0
2013-04-16T10:40:11.730Z
AJ Henderson, I checked my STB and found that it does not has HDMI port :( So could not checked with HDMI cable. As I told earlier that most of the local channels are with STD and not HD it's really disturbing while watching TV. I wish if it is possible to get any intermediate converter which can convert STD to HD according to HDTV. I also tried to watch in 4:3 aspect ration but not got that much clear picture as the old CRT ones had displayed.
NullPointer
CC BY-SA 3.0
2013-04-16T13:04:36.737Z
@PHP - unfortunately, that is just the way it is.  An SD signal being up-converted on an HD set is going to look really bad.  As long as it is actually taking up the full screen (or a 4:3 ratio of the screen), then what you are seeing is already being up-converted since it is taking an image with 720 by 640 pixels of information and displaying it on a screen with 1920 by 1080 pixels.  A lot of the difference you see is probably the analog to digital conversion too.  An old SD set works by scanning an electron beam across phosphors. It's effectively an analog process that lacks the precision..
AJ Henderson
CC BY-SA 3.0
2013-04-16T13:06:34.900Z
of a digital display.  It gives it a softer feel which is going to tend to look better for low resolution even if the image is technically clearer on the digital display.  You might be able to get a better up-scaler that would try to approximate this feel, but it's not going to make any major improvement.  Did you switch to using component (r,g,b,w,r) cables or are you still using the yellow,white,red?
AJ Henderson
CC BY-SA 3.0
2013-04-16T20:13:10.117Z
AJ Henderson:Please tell me about component (r,g,b,w,r) cables. Actually I am not that much technical in this field. So guide me on that. Where can I buy that cable and how they looked like? I tried to upload an image of my STB but as I don't have >=10 reputation so could not. But let me explain the port which I found on my STB. Ports for:
L (white cable)
R (Red cable)
Video Out (Yellow cable)
S/PDIF (not used)
IR In (not used)
TV Out (not used)
Cable In (cable attached). I have only above listed ports on my STB
NullPointer
CC BY-SA 3.0
2013-04-16T23:16:15.857Z
@Php - I mentioned it in my answer.  They look the same as your current yellow,white, red cable, but you just hook them up to different connectors.  The cables are no different.  It just requires 5 connections instead of 3.
AJ Henderson
CC BY-SA 3.0
2013-04-17T05:49:34.707Z
Aj Henderson: Oh yes. I was curious because you asked that "Did you switch...?" That's why I asked curiously. If red,white,yellow cables are ok then I am using the same. Now I have two options (1. Recharge package of HD channels - only 5 to 6 are available channels in HD and 2. Continue with current display whatever distortion it display) Because going to HD channels are very costly and even if I go for it then not all channels are in HD. Please tell me How can I accept this answer so that we can finish here. :) It was a really a nice discussion for me on this topic.
NullPointer
CC BY-SA 3.0
2013-04-17T13:05:31.543Z
@PHP - There should be a checkbox under the voting options on the answer.  You click that to accept an answer.
AJ Henderson
CC BY-SA 3.0
2013-08-12T10:46:08.173Z
FYI, Now my Toshiba LED 29" TV is showing Good quality pictures than the previous one. I think the Channels have started broadcasting pictures in Good quality from their source. So now it's really enjoyable to watch TV in 29" LED.
NullPointer
CC BY-SA 3.0
2013-04-12T13:45:30.410Z
2013-04-12T14:20:11.137Z
2013-04-12T14:20:11.137Z
AJ Henderson
<p>I have Toshiba 29PB200ZE (just purchased). Now the problem is it displays pixels with very blur effect. Reason is that the Cable operators in India (using Standard Channel Broadcasting) broadcasting 720p resolution output. As I have 1080p HDTV it does not displays output properly. Means that tiering the pixels.</p>

<p>Is there any converter available that converts 720p output from Channel (set top box) to 1080p so that I can view output properly.</p>

<p>If I go for HD Channels then issue will not be arised. But as HD channels have very high price range so could not afford them.</p>

<p>Edit: I am using 3 pin (red, yellow and white) cable which connects Set Top Box (digital signals) and my HDTV Toshiba 29PB200ZE. Is performance can be improved by installing other higher density cable like Coaxial?</p>

CC BY-SA 3.0
2013-04-12T12:27:54.983Z
Welcome to AVP!  Interesting question.  However, I'm not sure that it is on-topic here at AVP.  We'll see what the community thinks.  Please have a look at the [faq](http://avp.stackexchange.com/faq#questions) concerning what types of questions are on-topic.  Having said that, I'll take a stab at answering :)
JoshP
CC BY-SA 3.0
2013-04-12T17:20:36.873Z
@JoshP - personally, while the question is more of a home A/V than professional A/V question.  The formats in question are still used by professionals and the idea of upscaling is relevant as well, so I think it merits keeping.  It also might not be horrible to expand in to consumer A/V since I'm not sure if there is a better forum for that on SE, but that's probably more a question to discuss in Meta.
AJ Henderson
<conversion><streaming><cable><setup><full-hd>
Is it possible to convert output of TV Channel (set top box 720p) to 1080p?
NullPointer
# Is it possible to convert output of TV Channel (set top box 720p) to 1080p?

(Asked by: username_0 on 2013-04-12)

I have Toshiba 29PB200ZE (just purchased). Now the problem is it displays pixels with very blur effect. Reason is that the Cable operators in India (using Standard Channel Broadcasting) broadcasting 720p resolution output. As I have 1080p HDTV it does not displays output properly. Means that tiering the pixels.

Is there any converter available that converts 720p output from Channel (set top box) to 1080p so that I can view output properly.

If I go for HD Channels then issue will not be arised. But as HD channels have very high price range so could not afford them.

Edit: I am using 3 pin (red, yellow and white) cable which connects Set Top Box (digital signals) and my HDTV Toshiba 29PB200ZE. Is performance can be improved by installing other higher density cable like Coaxial?

**Tags:** conversion, streaming, cable, setup, full-hd

> **Comments:**
> **username_1**: Welcome to AVP!  Interesting question.  However, I'm not sure that it is on-topic here at AVP.  We'll see what the community thinks.  Please have a look at the [faq](http://avp.stackexchange.com/faq#questions) concerning what types of questions are on-topic.  Having said that, I'll take a stab at answering :)  
> **username_2**: @username_1 - personally, while the question is more of a home A/V than professional A/V question.  The formats in question are still used by professionals and the idea of upscaling is relevant as well, so I think it merits keeping.  It also might not be horrible to expand in to consumer A/V since I'm not sure if there is a better forum for that on SE, but that's probably more a question to discuss in Meta.  

---

## 2 answers

### Answer by username_2 on 2013-04-12. Score: 7 | Accepted answer

What you are talking about is upscaling and any current HDTV will do upscaling automatically. Upscaling doesn't work miracles though, it will only make it so that the lower quality signal can be watched on a higher quality display. It just multiplies the pixels so that a 720 by 480 (.9 pixel compressed) signal for example doesn't end up only taking up 1/4 of your screen. It doesn't make the video any higher quality (it in fact will be slightly lower quality than if you were to watch it at the native resolution).

Your problem however is not lack of upscaling. Your problem is using the wrong signal. You are currently connecting your cable box to your TV through what is known as a composite cable. It's an old type of analog connection that includes all the video information on the single yellow pin and sends left and right audio on the white and red pins respectively. It is only capable of reproducing a standard definition signal so you are not actually using HD signals.

To benefit from 720 or 1080 signals, you will have to either use analog Component video (the red/green/blue connectors) or use an HDMI cable. It's worth noting that as long as your TV and cable box both have component inputs/outputs, you can actually re-purpose the existing Composite cable to carry a component signal, but there will be no audio (you need a separate white/red pair for the audio, which is the same format as with the composite signal).

Once you fix the cable and hookup issue, you should see better image quality. Personally, I'd recommend using HDMI if it is available on both your cable box and TV as that is the easiest to setup and will give a nice digital signal.

> **Comments:**
> **username_2**: @Horatio - thanks for the fix, even though I know them in my head, I often type them backwards.  Too many C words.  
> **username_0**: Thumbs up. Very nice explanation. Sure I will go for HDMI cable. The true fact (after researching and confirm by your explanation) if channels are not HD then I cannot view HD output from HDTV. I have to check after connecting HDMI cable to STB with HDTV.  
> **username_0**: username_2, I checked my STB and found that it does not has HDMI port :( So could not checked with HDMI cable. As I told earlier that most of the local channels are with STD and not HD it's really disturbing while watching TV. I wish if it is possible to get any intermediate converter which can convert STD to HD according to HDTV. I also tried to watch in 4:3 aspect ration but not got that much clear picture as the old CRT ones had displayed.  
> **username_2**: @PHP - unfortunately, that is just the way it is.  An SD signal being up-converted on an HD set is going to look really bad.  As long as it is actually taking up the full screen (or a 4:3 ratio of the screen), then what you are seeing is already being up-converted since it is taking an image with 720 by 640 pixels of information and displaying it on a screen with 1920 by 1080 pixels.  A lot of the difference you see is probably the analog to digital conversion too.  An old SD set works by scanning an electron beam across phosphors. It's effectively an analog process that lacks the precision..  
> **username_2**: of a digital display.  It gives it a softer feel which is going to tend to look better for low resolution even if the image is technically clearer on the digital display.  You might be able to get a better up-scaler that would try to approximate this feel, but it's not going to make any major improvement.  Did you switch to using component (r,g,b,w,r) cables or are you still using the yellow,white,red?  
> **username_0**: username_2:Please tell me about component (r,g,b,w,r) cables. Actually I am not that much technical in this field. So guide me on that. Where can I buy that cable and how they looked like? I tried to upload an image of my STB but as I don't have >=10 reputation so could not. But let me explain the port which I found on my STB. Ports for: L (white cable) R (Red cable) Video Out (Yellow cable) S/PDIF (not used) IR In (not used) TV Out (not used) Cable In (cable attached). I have only above listed ports on my STB  
> **username_2**: @Php - I mentioned it in my answer.  They look the same as your current yellow,white, red cable, but you just hook them up to different connectors.  The cables are no different.  It just requires 5 connections instead of 3.  
> **username_0**: Aj Henderson: Oh yes. I was curious because you asked that "Did you switch...?" That's why I asked curiously. If red,white,yellow cables are ok then I am using the same. Now I have two options (1. Recharge package of HD channels - only 5 to 6 are available channels in HD and 2. Continue with current display whatever distortion it display) Because going to HD channels are very costly and even if I go for it then not all channels are in HD. Please tell me How can I accept this answer so that we can finish here. :) It was a really a nice discussion for me on this topic.  
> **username_2**: @PHP - There should be a checkbox under the voting options on the answer.  You click that to accept an answer.  
> **username_0**: FYI, Now my Toshiba LED 29" TV is showing Good quality pictures than the previous one. I think the Channels have started broadcasting pictures in Good quality from their source. So now it's really enjoyable to watch TV in 29" LED.  

---

### Answer by username_1 on 2013-04-12. Score: 4

The cabling is likely your problem. The composite cables you're using (red, yellow, white) will only move analog signal from the set top box to the TV. Likewise with RG59 or RG6 (coaxial).

While both varieties of cables there are technically capable of passing digital signals (they don't care... they're just dumb cables), set top boxes typically only output 480i signals on those particular outputs.

They only way you're going to get 720p signal to your TV is by using one of the set top box's outputs capable of transmitting 720p: HDMI, DVI, VGA, or the component RCA outputs (red, green, blue). Not all set top boxes have all of these.

Incidentally, if you don't have any HD content, the improvement will be marginal. Standard 480i signals often just don't look that good when displayed on a large flat screen.

> **Comments:**
> **username_2**: VGA is an analog component signal.  DVI can do both the analog signal in the format VGA uses (R/G/B/H/V) or the digital format that HDMI carries, but does so on different pins.  HDMI is pure digital.  
> **username_3**: VGA *is* an analog connection, but what is transmitted itself may be at 720p(1280 × 720) or 1080p(1920 x 1080) resolution. Resampling a low-resolution "standard def" image (which is probably what the STB is sending over the composite cable) is a much bigger visual problem than analog/digital signal. If a 720p channel is being downsampled for output over composite and then stretched (resampled) by the tv set to native resolution, you have even more degradation.  
> **username_0**: @username_3 - you're totally right. Picture is being displayed with distortion. Actually channels are not that much capable which can be displayed in 1080p HDTV. This shows that I have to go for HD channels. But all channels (which are) being broadcasted are not HD channels. Only few are there and all local channels are being transmitted with STD. So there is no sense to watch them in HDTV. I realize after purchasing the HDTV (just purchased 3 days before). Currently I found temp solution to view STD channels in Movie Mode. Which dulls the brightness but shows clear picture. Any Suggestion?  

---

