Moving Hard Drives, Speed, USB

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Archived from groups: alt.video.ptv.replaytv (More info?)

On Tue, 31 May 2005 09:32:30 -0500, "Karl Kaufman"
<krkweb@comNOcastSPAM.net> wrote:

>
>"Tony D" <nospam@nospam.com> wrote in message
>news:dbGdnTGlKtOcQAbfRVn-og@comcast.com...
>> John in Detroit wrote:
>>
>> > Oh, I don't know,,,, A USB external tuner might give you the ability to
>> > record 2 channels of programming at one time... Very useful
>> >
>> No, it couldn't. The Replay would not be able to process and encode the
>> data stream from 2 tuners at the same time.
>
>Yes, it could. Much like with existing external USB TV tuner/PVR devices
>the encoding happens within the external unit, so the Replay would only need
>to store the encoded data stream to disk (along w/ whatever indexing is
>necessary).
>
>

Yes, you could have an external device that does the encoding
(providing a digital stream that's already MPEG). However:

1. It's unlikey that the device would produce MPEG exactly the way the
Replay requires it.

2. The Replay still does not do 2 recordings at the same time,
regardless of the encoder(s) being used. If this is even possible with
the current hardware, it would take an extensive software rewrite.

--
Mark Lloyd
has a Replay 5xxx
http://notstupid.laughingsquid.com

"The idea that there is an invisible being who
created and still runs this old universe is so
childish, so obviously contrived, that it is hard to
believe anyone with even a modicum of education can
still fall for that scam."
 
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Archived from groups: alt.video.ptv.replaytv (More info?)

On Tue, 31 May 2005 09:38:19 -0500, "Karl Kaufman"
<krkweb@comNOcastSPAM.net> wrote:

>
>"Mark Lloyd" <mlloyd@5xxxmail.com5xxx> wrote in message
>news:igtm91dduht7sr4hgcrm94da9iqrjb3kgv@4ax.com...
>> On Mon, 30 May 2005 13:12:20 -0400, one@atime.com wrote:
>>
>> >USB Wireless networking module
>>
>> Note that it's better to use wired networking whenever possible.
>
>Yes, but the list appears to have been put together as a brainstorming
>effort in answer to the "why USB?" question, rather than an authoritative
>list of high priority feature requests.
>

Yes. And why do you consider it wrong to add additional information?

>Also, much like the earlier comment regarding using the USB port as a backup
>for a dead modem, the USB port could be used to plug-in a wireless *or
>wired* Ethernet adapter in the event the built-in port goes South.
>

Yes.

>
>> >USB camera video input
>>
>> Why bother with USB. Just use one of the existing audio/video inputs
>> and let the Replay digitize the signal.
>
>Input ports could be otherwise occupied w/ connections from a satelite box,
>DVD, etc.
>

Yes, this could become an additional input, letting you connect a
fourth source. However, I think the idea of making multiple Replays
work together would be better (think about that, if you have 2 shows
you want and 2 Replays, why should they make the SAME decision about
which to record).

>Again, what's the point of criticizing the list? Especially in light of the
>fact that the USB port will never be enabled?
>

Why should you limit your thinking that way? Important inventions are
made by avoiding such limitations (consider that to invent something,
you first imagine something that doesn't YET exist).

>

--
Mark Lloyd
has a Replay 5xxx
http://notstupid.laughingsquid.com

"The idea that there is an invisible being who
created and still runs this old universe is so
childish, so obviously contrived, that it is hard to
believe anyone with even a modicum of education can
still fall for that scam."
 
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Archived from groups: alt.video.ptv.replaytv (More info?)

That all depends Tony... If the external tuner did the encoding, then
all the replay would have to do is record it.

I use a tuner card in one of my computers... Far as I know it outputs MPG

Tony D wrote:
> John in Detroit wrote:
>
>> Oh, I don't know,,,, A USB external tuner might give you the ability
>> to record 2 channels of programming at one time... Very useful
>>
> No, it couldn't. The Replay would not be able to process and encode the
> data stream from 2 tuners at the same time.

--
John F Davis, in Delightful Detroit. WA8YXM(at)arrl(dot)net
"Nothing adds excitement like something that is none of your business"
Diabetic? http://community.compuserve.com/diabetes
 
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Archived from groups: alt.video.ptv.replaytv (More info?)

On Tue, 31 May 2005 14:59:45 GMT, John in Detroit
<Blanked@sbcglobal.net> wrote:

>That all depends Tony... If the external tuner did the encoding, then
>all the replay would have to do is record it.
>
>I use a tuner card in one of my computers... Far as I know it outputs MPG
>

However PC software is usually much more flexible in how it requires
MPEG streams to be formatted. The Replay is much more strict.

Can the Replay even handle 2 incoming strreams at once?

>Tony D wrote:
>> John in Detroit wrote:
>>
>>> Oh, I don't know,,,, A USB external tuner might give you the ability
>>> to record 2 channels of programming at one time... Very useful
>>>
>> No, it couldn't. The Replay would not be able to process and encode the
>> data stream from 2 tuners at the same time.

--
Mark Lloyd
has a Replay 5xxx
http://notstupid.laughingsquid.com

"The idea that there is an invisible being who
created and still runs this old universe is so
childish, so obviously contrived, that it is hard to
believe anyone with even a modicum of education can
still fall for that scam."
 
G

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Archived from groups: alt.video.ptv.replaytv (More info?)

Mark Lloyd wrote:

> It would be useful, but the Replay won't do it. It won't make 2
> recordings at the same time. The only way you could use an external
> tuner would be bypassing the internal tuner.

You are correct in part Mark but you are not thinking fully here

Fact: The usb port is not active so this is all speculation

Fact: Most computers INCLUDING THE REPLAY are able to have more than one
file open on a disk at one time, (Replays routinely keep 2 files open,
or one file open twice, one for read, one for write) There is no
HARDWARE reason it can not have 3 or 4 or more files open at one time

FACT: If someone were to write the code to allow the replay to operate
an external tuner via USB, adding the code to have it record the stream
would be fairly easy

FACT: i'm no where good enough to write the code

--
John F Davis, in Delightful Detroit. WA8YXM(at)arrl(dot)net
"Nothing adds excitement like something that is none of your business"
Diabetic? http://community.compuserve.com/diabetes
 
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Archived from groups: alt.video.ptv.replaytv (More info?)

On Tue, 31 May 2005 15:02:46 GMT, John in Detroit
<Blanked@sbcglobal.net> wrote:

>
>
>Mark Lloyd wrote:
>
>> It would be useful, but the Replay won't do it. It won't make 2
>> recordings at the same time. The only way you could use an external
>> tuner would be bypassing the internal tuner.
>
>You are correct in part Mark but you are not thinking fully here
>
>Fact: The usb port is not active so this is all speculation
>

True, and according to my testing (on both pre <5500 and 55xx models)
does not even provide power.

>Fact: Most computers INCLUDING THE REPLAY are able to have more than one
>file open on a disk at one time,

Depending on CPU speed and other resources. They probably could if the
streams are encoded in hardware.

>(Replays routinely keep 2 files open,
>or one file open twice, one for read, one for write) There is no
>HARDWARE reason it can not have 3 or 4 or more files open at one time
>

Maybe not. Currently, the Replay assigns highest priority to the task
of recording. So, when the Replay is overloaded, recording is not
effected as much. Is the hardware really capable of TWO such tasks?

>FACT: If someone were to write the code to allow the replay to operate
>an external tuner via USB, adding the code to have it record the stream
>would be fairly easy
>

AS WELL as any other source, or INSTEAD OF it?

>FACT: i'm no where good enough to write the code

--
Mark Lloyd
has a Replay 5xxx
http://notstupid.laughingsquid.com

"The idea that there is an invisible being who
created and still runs this old universe is so
childish, so obviously contrived, that it is hard to
believe anyone with even a modicum of education can
still fall for that scam."
 
G

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Archived from groups: alt.video.ptv.replaytv (More info?)

At this time the Replay can not, but since we are speculating about what
they could have used the USB port for, remember it's all speculation,
that means they could easily program to deal with any and all issues
re-the precise format of the stream and/or multiple channel issues

You have to remember this is all "What if" that we are playing here

Mark Lloyd wrote:

>
> However PC software is usually much more flexible in how it requires
> MPEG streams to be formatted. The Replay is much more strict.
>
> Can the Replay even handle 2 incoming strreams at once?
>

--
John F Davis, in Delightful Detroit. WA8YXM(at)arrl(dot)net
"Nothing adds excitement like something that is none of your business"
Diabetic? http://community.compuserve.com/diabetes
 
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Archived from groups: alt.video.ptv.replaytv (More info?)

Mark, recording a 2nd, already encoded, stream takes next to no
processor time so yes, it should be able to do both streams at one time

I checked for power on the USB port too.... I could have used it just
for power if it had any, I have several devices that use USB power and
no data feed at all



Mark Lloyd wrote:

> True, and according to my testing (on both pre <5500 and 55xx models)
> does not even provide power.
>
>
>>Fact: Most computers INCLUDING THE REPLAY are able to have more than one
>>file open on a disk at one time,
>
>
> Depending on CPU speed and other resources. They probably could if the
> streams are encoded in hardware.
>
>
>>(Replays routinely keep 2 files open,
>>or one file open twice, one for read, one for write) There is no
>>HARDWARE reason it can not have 3 or 4 or more files open at one time
>>
>
>
> Maybe not. Currently, the Replay assigns highest priority to the task
> of recording. So, when the Replay is overloaded, recording is not
> effected as much. Is the hardware really capable of TWO such tasks?
>
>
>>FACT: If someone were to write the code to allow the replay to operate
>>an external tuner via USB, adding the code to have it record the stream
>>would be fairly easy
>>
>
>
> AS WELL as any other source, or INSTEAD OF it?
>
>
>>FACT: i'm no where good enough to write the code
>
>

--
John F Davis, in Delightful Detroit. WA8YXM(at)arrl(dot)net
"Nothing adds excitement like something that is none of your business"
Diabetic? http://community.compuserve.com/diabetes