Can I use an old PC as a DVR

On Apr 27, 5:00 am, "Captain Midnight" wrote:
"mogator88" wrote in message

oups.com...



On Apr 26, 2:29 pm, NadCixelsyd wrote:
Note: I'm OTA only, and I'm spoiled by digital programming. I have a
Sony HDD250 and I'd love to get another one but Sony doesn't make them
anymore. Used ones on eBay are selling for more than I paid new. In
my mind, "USED" = "Probably_Has_Problems".

So I was thinking of taking my son's 4 year-old PC and turning it into
a DVR. Are the ATSC tuners for a PC adequate? If so, which ones work
best? Since my son's PC only has about 50 gb, I assume I'll need
more. Are an ATSC tuner and more disk space easy to install? More
importantly, will they work as well as my HDD250? Is a 4 year-old PC
powerful enough to handle the task if that's all it does?

A 4 year old PC is probably not adequate for HD playback, and the disk
is definitely too small. You can throw a bunch of tuner cards and a
larger disk in it and it will record multiple shows easily. For
playback you'll need a stronger computer. I built one. It costs
more, but it looks like it belongs in my living room. Figure $400 -
$500 to build one. I use mythtv, but only one box.

I use a 5 year old P4-2.4GHZ. I can do analog PVR and capture HD at the same
time PVR analog and SD or PVR HD. Displaying HD is the hard part and takes
about 50%CPU. I've heard of people using as slow as P4-1.8GHZ for just HD
PVR. A DX9 compliant display card is required for Windows. A large secondary
drive is a very good idea. 8GB/HR eats up a lot of space.

A card and HDD are easy to install. Software install and use will probably
not be as easy as your used to but are certainly doable. Software is
probably more important than which card. If using Windows I suggest getting
one that works with the WatchHDTV programs.

http://watchhdtv.net/default.aspx

Well, I did say _probably_ not adequate. Not everyone with a 5 year
old computer has a 2.4 ghz P4. My 4 year old computer is a 1.7 ghz
celeron, and my 5 year old computer is a P3 at 1ghz. I didn't think
either is a good candidate for HD playback.

On Mon, 30 Apr 2007 13:12:42 -0700, mogator88 wrote:

Well, I did say _probably_ not adequate. Not everyone with a 5 year
old computer has a 2.4 ghz P4. My 4 year old computer is a 1.7 ghz
celeron, and my 5 year old computer is a P3 at 1ghz. I didn't think
either is a good candidate for HD playback.

Computers are so cheap now just replace the MB/CPU/Ram and don't worry
about having a fast enough CPU for HD playback. Fry's had an AMD X2 3800+
(dual core) with MB on sale fro $89. That's more than fast enough. I've
got 4 HDTV tuners in mine, and I can record 4 shows while watching an HD
recording and have half the cpu left over. Or pickup a cheap 754 MB and
AMD 64 3200+ from newegg for $36. That's more than fast enough too.

--
Want the ultimate in free OTA SD/HDTV Recorder? http://mythtv.org
http://mysettopbox.tv/knoppmyth.html Usenet alt.video.ptv.mythtv
My server http://wesnewell.no-ip.com/cpu.php
HD Tivo S3 compared http://wesnewell.no-ip.com/mythtivo.htm

How do you decode the HD? Or is this OTA transmission? I have Comcast and if
I wanted to record an HD show I would have to use the tuner to get the
channel and set the card to channel 3 seems to defeat the purpose for me at
least.

Rich


"Wes Newell" wrote in message
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On Mon, 30 Apr 2007 13:12:42 -0700, mogator88 wrote:

Well, I did say _probably_ not adequate. Not everyone with a 5 year
old computer has a 2.4 ghz P4. My 4 year old computer is a 1.7 ghz
celeron, and my 5 year old computer is a P3 at 1ghz. I didn't think
either is a good candidate for HD playback.

Computers are so cheap now just replace the MB/CPU/Ram and don't worry
about having a fast enough CPU for HD playback. Fry's had an AMD X2 3800+
(dual core) with MB on sale fro $89. That's more than fast enough. I've
got 4 HDTV tuners in mine, and I can record 4 shows while watching an HD
recording and have half the cpu left over. Or pickup a cheap 754 MB and
AMD 64 3200+ from newegg for $36. That's more than fast enough too.

--
Want the ultimate in free OTA SD/HDTV Recorder? http://mythtv.org
http://mysettopbox.tv/knoppmyth.html Usenet alt.video.ptv.mythtv
My server http://wesnewell.no-ip.com/cpu.php
HD Tivo S3 compared http://wesnewell.no-ip.com/mythtivo.htm

On Tue, 01 May 2007 08:09:57 -0500, Rich wrote:

How do you decode the HD? Or is this OTA transmission? I have Comcast and if
I wanted to record an HD show I would have to use the tuner to get the
channel and set the card to channel 3 seems to defeat the purpose for me at
least.

The PC decodes the stored file and sends it to the video device (video
card). Some video cards have built in hardware decoders to remove some of
this burden from the CPU. I think most are now limited to mpeg2, which is
used OTA, but that may have changed. I don't keep up with it.

For cable, the problem is the format in which the signal is received and
whether or not the program is encrypted or not. Same for sat. I assume
most Hdef cable/sat are sent via QAM. This means you need a QAM capable
tuner just to receive the signal. Then if the signal is also encrpted,
which most prime channels are I'm told, you won't be able to view them
without a cable/sat box to decrypt them. That's what cablecard does. Would
be nice if the boxes output a standard format that you could then record,
however most don't I'm told. I've gotten around all this BS by never
having cable/sat.:-)

--
Want the ultimate in free OTA SD/HDTV Recorder? http://mythtv.org
http://mysettopbox.tv/knoppmyth.html Usenet alt.video.ptv.mythtv
My server http://wesnewell.no-ip.com/cpu.php
HD Tivo S3 compared http://wesnewell.no-ip.com/mythtivo.htm

"mogator88" wrote in message
oups.com...
On Apr 27, 5:00 am, "Captain Midnight" wrote:
"mogator88" wrote in message

oups.com...



On Apr 26, 2:29 pm, NadCixelsyd wrote:
Note: I'm OTA only, and I'm spoiled by digital programming. I have
a
Sony HDD250 and I'd love to get another one but Sony doesn't make
them
anymore. Used ones on eBay are selling for more than I paid new.
In
my mind, "USED" = "Probably_Has_Problems".

So I was thinking of taking my son's 4 year-old PC and turning it
into
a DVR. Are the ATSC tuners for a PC adequate? If so, which ones
work
best? Since my son's PC only has about 50 gb, I assume I'll need
more. Are an ATSC tuner and more disk space easy to install? More
importantly, will they work as well as my HDD250? Is a 4 year-old
PC
powerful enough to handle the task if that's all it does?

A 4 year old PC is probably not adequate for HD playback, and the disk
is definitely too small. You can throw a bunch of tuner cards and a
larger disk in it and it will record multiple shows easily. For
playback you'll need a stronger computer. I built one. It costs
more, but it looks like it belongs in my living room. Figure $400 -
$500 to build one. I use mythtv, but only one box.

I use a 5 year old P4-2.4GHZ. I can do analog PVR and capture HD at the
same
time PVR analog and SD or PVR HD. Displaying HD is the hard part and
takes
about 50%CPU. I've heard of people using as slow as P4-1.8GHZ for just
HD
PVR. A DX9 compliant display card is required for Windows. A large
secondary
drive is a very good idea. 8GB/HR eats up a lot of space.

A card and HDD are easy to install. Software install and use will
probably
not be as easy as your used to but are certainly doable. Software is
probably more important than which card. If using Windows I suggest
getting
one that works with the WatchHDTV programs.

http://watchhdtv.net/default.aspx

Well, I did say _probably_ not adequate. Not everyone with a 5 year
old computer has a 2.4 ghz P4. My 4 year old computer is a 1.7 ghz
celeron, and my 5 year old computer is a P3 at 1ghz. I didn't think
either is a good candidate for HD playback.


The P4-2.4 build was closer to 4.5 years old but it was several steps from
the top when I did the build. Prices are crazy when buying the
latest/greatest CPU. You may be buying seriously behind the curve. The
Celeron might just make it in a dedicated system but your right, not a good
candidate. Still need a compliant video card and adequate HDD space, ~100GB.
Not a necessity but 5.1 surround is worthwhile too. HD is noticeably better
than analog on a 15" monitor but bigger is better.

Adding a HD card, HDD and especially a more powerful video card might
require a better power supply.

On Apr 30, 4:50 pm, Wes Newell wrote:

Or pickup a cheap 754 MB and
AMD 64 3200+ from newegg for $36. That's more than fast enough too.

Was the mobo the "free gift" they were offering?

On Wed, 02 May 2007 16:59:32 -0700, mogator88 wrote:

On Apr 30, 4:50 pm, Wes Newell wrote:

Or pickup a cheap 754 MB and
AMD 64 3200+ from newegg for $36. That's more than fast enough too.

Was the mobo the "free gift" they were offering?

Of course not. You can get the MB anywhere. Can probably get one off ebay
for $25 or less for socket 754.

--
Want the ultimate in free OTA SD/HDTV Recorder? http://mythtv.org
http://mysettopbox.tv/knoppmyth.html Usenet alt.video.ptv.mythtv
My server http://wesnewell.no-ip.com/cpu.php
HD Tivo S3 compared http://wesnewell.no-ip.com/mythtivo.htm

On Tue, 01 May 2007 19:36:23 GMT, Wes Newell
wrote:

The PC decodes the stored file and sends it to the video device (video
card). Some video cards have built in hardware decoders to remove some of
this burden from the CPU. I think most are now limited to mpeg2, which is
used OTA, but that may have changed. I don't keep up with it.

http://www.anandtech.com/video/showdoc.aspx?i=2977