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#1
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video format conversion
First, is it possible to convert 4-pin S-video to either component or
7-pin S-video?[1] I see adapters from 7-pin S-video to component all over the place, and I have several. Extra power bricks are not a problem. It should cost less than a VGA - component converter else there's no point. Second, if so, how? Anyone have success getting the Linux Nvidia driver to show color through an S-video - composite adapter?[2] Maybe a kernel tweak is required? [1] I have an EVGA Geforce 6200 in a computer I'm trying to turn into a DVR. It has a _4-pin_ S-video out, but the amp doesn't have an S-video in. I have to stick with analog video unless I want to convert the computer, TV, and DVD player all three. (The amp won't convert signal formats for me.) So, my choices are component or composite. Component connections are much higher quality, but right now I have it connected by composite. [2] See, the way I have it set up now (using an S-video - composite adapter) it shows the desktop in greyscale. I looked that problem up on the web and all the solutions boiled down to "use S-video". Great, would if I could. I know the hardware works because the Energystar logo in the BIOS is in color. -- -eben P http://royalty.mine.nu:81 Every normal man must be tempted at times to spit upon his hands, hoist the black flag, and begin slitting throats. -- H.L. Mencken |
#2
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video format conversion
"Hactar" wrote in message
... First, is it possible to convert 4-pin S-video to either component or 7-pin S-video?[1] I see adapters from 7-pin S-video to component all over the place, and I have several. The 7-pin port is not S-video at all. It is simply component video in a compact shell (so it fits on a video card backplate). That's why the adapter cables are cheap: they simply split the wires into 3 plugs. Some cards have a 9-pin port of the same diameter, for added video-in (VIVO) capability. Anyone have success getting the Linux Nvidia driver to show color through an S-video - composite adapter?[2] Maybe a kernel tweak is required? Grayscale typically means Macrovision is kicking in. Why does the amp need to receive a video signal? Does your TV have a spare S-video-in? What about a composite in? If you bypass the amp, it may well remove the Macrovision "protection". [1] I have an EVGA Geforce 6200 in a computer I'm trying to turn into a DVR. It has a _4-pin_ S-video out, but the amp doesn't have an S-video in. I have to stick with analog video unless I want to convert the computer, TV, and DVD player all three. (The amp won't convert signal formats for me.) So, my choices are component or composite. Component connections are much higher quality, but right now I have it connected by composite. [2] See, the way I have it set up now (using an S-video - composite adapter) it shows the desktop in greyscale. I looked that problem up on the web and all the solutions boiled down to "use S-video". Great, would if I could. I know the hardware works because the Energystar logo in the BIOS is in color. The BIOS screen occurs before the nVidia driver kicks in. I am surprised you can get the BIOS screen to show up through the S-video out port. -- "War is the continuation of politics by other means. It can therefore be said that politics is war without bloodshed while war is politics with bloodshed." |
#3
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video format conversion
'Hactar' wrote, in part:
First, is it possible to convert 4-pin S-video to either component or 7-pin S-video?[1] I see adapters from 7-pin S-video to component all over the place, and I have several. Extra power bricks are not a problem. It should cost less than a VGA - component converter else there's no point. Second, if so, how? Anyone have success getting the Linux Nvidia driver to show color through an S-video - composite adapter?[2] Maybe a kernel tweak is required? .. .. .. _____ "S-video" is merely a two analog signal version of composite video. One signal is the luminance (gray scale) video with sync pulses, the second signal is just the chroma signal. For composite video, the chroma signal is encoded and mixed with the luminance signal. The resulting mixture has less resolution than "S-video" can provide. From your report it seems that your "S-video" to composite video adapter is not working, or a conductor is broken. All that is necessary to convert an analog "S-video" signal to an analog composite signal is to mix the two signals, possibly running the luminance signal through a low pass filter first. This should be a completely passive filter consisting of the adapter shell and two 4-pin connectors, plus a few resistors and capacitors.) The BIOS splash screen displays BEFORE the video drivers are invoked, and BEFORE the operating system is loaded. I suggest you borrow a device that HAS an "S-video" input and check for color before and after the operating system is loaded. As 'First of One' posted, a 7-pin connector is not an "S-video" connector. Finally, have you tried using Google? Try the search string S-video to composite adapter and you will find complete explanations and adapters costing as little as $4 US. Phil Weldon "Hactar" wrote in message ... First, is it possible to convert 4-pin S-video to either component or 7-pin S-video?[1] I see adapters from 7-pin S-video to component all over the place, and I have several. Extra power bricks are not a problem. It should cost less than a VGA - component converter else there's no point. Second, if so, how? Anyone have success getting the Linux Nvidia driver to show color through an S-video - composite adapter?[2] Maybe a kernel tweak is required? [1] I have an EVGA Geforce 6200 in a computer I'm trying to turn into a DVR. It has a _4-pin_ S-video out, but the amp doesn't have an S-video in. I have to stick with analog video unless I want to convert the computer, TV, and DVD player all three. (The amp won't convert signal formats for me.) So, my choices are component or composite. Component connections are much higher quality, but right now I have it connected by composite. [2] See, the way I have it set up now (using an S-video - composite adapter) it shows the desktop in greyscale. I looked that problem up on the web and all the solutions boiled down to "use S-video". Great, would if I could. I know the hardware works because the Energystar logo in the BIOS is in color. -- -eben P http://royalty.mine.nu:81 Every normal man must be tempted at times to spit upon his hands, hoist the black flag, and begin slitting throats. -- H.L. Mencken |
#4
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video format conversion
In article ,
First of One wrote: "Hactar" wrote in message ... First, is it possible to convert 4-pin S-video to either component or 7-pin S-video?[1] I see adapters from 7-pin S-video to component all over the place, and I have several. The 7-pin port is not S-video at all. It is simply component video in a compact shell (so it fits on a video card backplate). That's why the adapter cables are cheap: they simply split the wires into 3 plugs. Some cards have a 9-pin port of the same diameter, for added video-in (VIVO) capability. Noted. That's why conversion is easy I suppose. Then is there any way to convert true S-video to anything besides composite? Anyone have success getting the Linux Nvidia driver to show color through an S-video - composite adapter?[2] Maybe a kernel tweak is required? Grayscale typically means Macrovision is kicking in. Why does the amp need to receive a video signal? Automatic switching. Tell the amp "source=DVD" it routes DVD sound - speakers and DVD video - TV. Same with the DVR. Does your TV have a spare S-video-in? What about a composite in? Both. I have a 4-way switch that handles S-video, composite, and sound too. If you bypass the amp, it may well remove the Macrovision "protection". I'll try that. One of my goals was to get an amp that handled video so I could ditch the manual switch. [2] See, the way I have it set up now (using an S-video - composite adapter) it shows the desktop in greyscale. I looked that problem up on the web and all the solutions boiled down to "use S-video". Great, would if I could. I know the hardware works because the Energystar logo in the BIOS is in color. The BIOS screen occurs before the nVidia driver kicks in. I am surprised you can get the BIOS screen to show up through the S-video out port. Yep, memory countup, drive enumeration, the lot. I gather that before the OS loads the card simply mirrors the video stream on VGA, DVI and S-video. -- -eben P royalty.mine.nu:81 A: It's annoying as hell Q: Why do most people hate top-posting? -- Lots42 The Library Avenger http://www.fscked.co.uk/writing/top-posting-cuss.html |
#5
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video format conversion
"Hactar" wrote in message
... Then is there any way to convert true S-video to anything besides composite? There is no easy/cheap way. If you can see the BIOS in color, then the S-video to composite adapter is probably working correctly. This is most likely Macrovision or a driver quirk, so converting the S-video signal to anything else won't solve the problem. If you bypass the amp, it may well remove the Macrovision "protection". I'll try that. One of my goals was to get an amp that handled video so I could ditch the manual switch. Most decent TVs made in the last 10 years should have an input selector, often a button on the remote. Then you can have the PC connected to the TV directly, while your other devices go through the amp, and not use the manual switch. -- "War is the continuation of politics by other means. It can therefore be said that politics is war without bloodshed while war is politics with bloodshed." |
#6
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video format conversion
In article ,
Phil Weldon wrote: 'Hactar' wrote, in part: First, is it possible to convert 4-pin S-video to either component or 7-pin S-video?[1] I see adapters from 7-pin S-video to component all over the place, and I have several. Extra power bricks are not a problem. It should cost less than a VGA - component converter else there's no point. Second, if so, how? Anyone have success getting the Linux Nvidia driver to show color through an S-video - composite adapter?[2] Maybe a kernel tweak is required? _____ "S-video" is merely a two analog signal version of composite video. One signal is the luminance (gray scale) video with sync pulses, the second signal is just the chroma signal. For composite video, the chroma signal is encoded and mixed with the luminance signal. The resulting mixture has less resolution than "S-video" can provide. From your report it seems that your "S-video" to composite video adapter is not working, or a conductor is broken. The hardware acts like it works, since I get color in the BIOS. The adapter's a piece of molded plastic anyhow (like those DVI-VGA adapters), so a broken wire is unlikely. All that is necessary to convert an analog "S-video" signal to an analog composite signal is to mix the two signals, possibly running the luminance signal through a low pass filter first. This should be a completely passive filter consisting of the adapter shell and two 4-pin connectors, Why two? plus a few resistors and capacitors.) The BIOS splash screen displays BEFORE the video drivers are invoked, and BEFORE the operating system is loaded. Indeed. By that nature, it shows the capabilities of the hardware alone. I suggest you borrow a device that HAS an "S-video" input and check for color before and after the operating system is loaded. As 'First of One' posted, a 7-pin connector is not an "S-video" connector. Finally, have you tried using Google? Yes. All of the solutions boiled down to "use S-video" which isn't an option for me (amp doesn't do S-video). Sure, I could use it if I went to manual switching. I have the switch and enough S-video cables. Try the search string S-video to composite adapter and you will find complete explanations and adapters costing as little as $4 US. Yes, got one. Radio Shack and the local computer store each sell one also. However, I was trying _not_ to use composite since it looks bad (relatively speaking). -- -eben P royalty.mine.nu:81 A: Because it looks dumb and is hard to read. Q: Why is top-posting wrong? -- from http://www.fscked.co.uk/writing/top-posting-cuss.html |
#7
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video format conversion
'Hactar' wrote, in part:
Why two? .. Indeed. By that nature, it shows the capabilities of the hardware alone. .. Yes, got one. Radio Shack and the local computer store each sell one also. However, I was trying _not_ to use composite since it looks bad (relatively speaking). .. .. _____ #1. "Why two?" So the chroma frequencies will not interfere with detail in the luminance signal. A device that has a composite video input must separate the chroma signal from the luminance signal before further processing the signal. The luminance signal eventually controls the brightness of each pixel on the screen while the chroma signal is decoded into three color signals, one each for Red, Green, and Blue. Separating the the chrominance signal out reduces the resolution of the luminance signal and thus the resolution of the image on the screen. #2. "Indeed. By that nature, it shows the capabilities of the hardware alone." True, but not sufficient for diagnosis. For example, the video card may output composite video during the splash screen BECAUSE THE VIDEO CARD BIOS IS NOT FULL INVOKED. Don't jump to conclusions. That's why I suggested using a device that accepts 'S-video' input as a check. #3. "Yes, got one. Radio Shack and the local computer store each sell one also. However, I was trying _not_ to use composite since it looks bad (relatively speaking)." Well, yes, composite video will look worse than 'S-video', component video, or any kind of digital video. That's the nature of composite video. No conversion of composite video to 'S-video', component video, or digital video will improve the original image. Most likely the result will be a degraded image. Phil Weldon "Hactar" wrote in message ... In article , Phil Weldon wrote: 'Hactar' wrote, in part: First, is it possible to convert 4-pin S-video to either component or 7-pin S-video?[1] I see adapters from 7-pin S-video to component all over the place, and I have several. Extra power bricks are not a problem. It should cost less than a VGA - component converter else there's no point. Second, if so, how? Anyone have success getting the Linux Nvidia driver to show color through an S-video - composite adapter?[2] Maybe a kernel tweak is required? _____ "S-video" is merely a two analog signal version of composite video. One signal is the luminance (gray scale) video with sync pulses, the second signal is just the chroma signal. For composite video, the chroma signal is encoded and mixed with the luminance signal. The resulting mixture has less resolution than "S-video" can provide. From your report it seems that your "S-video" to composite video adapter is not working, or a conductor is broken. The hardware acts like it works, since I get color in the BIOS. The adapter's a piece of molded plastic anyhow (like those DVI-VGA adapters), so a broken wire is unlikely. All that is necessary to convert an analog "S-video" signal to an analog composite signal is to mix the two signals, possibly running the luminance signal through a low pass filter first. This should be a completely passive filter consisting of the adapter shell and two 4-pin connectors, Why two? plus a few resistors and capacitors.) The BIOS splash screen displays BEFORE the video drivers are invoked, and BEFORE the operating system is loaded. Indeed. By that nature, it shows the capabilities of the hardware alone. I suggest you borrow a device that HAS an "S-video" input and check for color before and after the operating system is loaded. As 'First of One' posted, a 7-pin connector is not an "S-video" connector. Finally, have you tried using Google? Yes. All of the solutions boiled down to "use S-video" which isn't an option for me (amp doesn't do S-video). Sure, I could use it if I went to manual switching. I have the switch and enough S-video cables. Try the search string S-video to composite adapter and you will find complete explanations and adapters costing as little as $4 US. Yes, got one. Radio Shack and the local computer store each sell one also. However, I was trying _not_ to use composite since it looks bad (relatively speaking). -- -eben P royalty.mine.nu:81 A: Because it looks dumb and is hard to read. Q: Why is top-posting wrong? -- from http://www.fscked.co.uk/writing/top-posting-cuss.html |
#8
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video format conversion
In article ,
First of One wrote: "Hactar" wrote in message ... Then is there any way to convert true S-video to anything besides composite? There is no easy/cheap way. If you can see the BIOS in color, then the S-video to composite adapter is probably working correctly. This is most likely Macrovision or a driver quirk, so converting the S-video signal to anything else won't solve the problem. Macrovision in the amp? OK. Sucks that the amp is preprocessing my data stream. As to the driver, if the "Mythbuntu" logo should be in color (I don't see it that way) then since that appears way before X and the Nvidia driver load, it would have to be an OS bug. If you bypass the amp, it may well remove the Macrovision "protection". I'll try that. One of my goals was to get an amp that handled video so I could ditch the manual switch. Most decent TVs made in the last 10 years should have an input selector, often a button on the remote. Then you can have the PC connected to the TV directly, while your other devices go through the amp, and not use the manual switch. I think in this TV S-video is automatically used if present, else it falls back to composite. There are no component or digital inputs or a way to pick the input (other than whatever it calls AUX). -- The people don't want war, but it is a simple matter to drag the people along. The people can always be brought to the bidding of the leaders. All you have to do is tell them they are being attacked, and denounce the pacifists for lack of patriotism and exposing the country to danger. - HG |
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