| Author |
Message |
Roger R
Guest
|
 Posted:
Wed Nov 30, 2005 5:08 pm Post subject:
Satellite DVB-S PCI cards, record data to disk? |
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|
Advice please, as I'm not familiar with satellite TV computer type PCI
cards. I'm looking for the facility to record the mpeg2 data directly
to disk.
As an example, new to the UK market is a Freecom DVB-T 'stick' for
terrestrial TV that plugs in a laptop. (Win XP only)
http://www.dabs.com/ProductView.aspx?Quicklinx=3S2L
http://www.freecom.com/ecProduct_detail.asp?ID=2234&nr=25451&prodn=DVB%2DT+USB+Stick
The device receives but doesn't decode the signals, passing the
required multiplex via USB into the computer. Using this device the
incoming mpeg 2 data can be recorded directly to disk. This makes an
efficient way to record progamme material.
I am guessing that recording the mpeg2 stream directly to disk would
be a feature of the software package. Is this a normal feature of all
PCI tuner cards, or are there only some, or none offering the
facility?
Roger |
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Jan Panteltje
Guest
|
| Posted:
Wed Nov 30, 2005 5:08 pm Post subject:
Re: Satellite DVB-S PCI cards, record data to disk? |
|
|
On a sunny day (Wed, 30 Nov 2005 14:33:51 -0000) it happened "Roger R"
<telstar461703@clara4co.uk.invalid> wrote in
<1133361177.4369.0@echo.uk.clara.net>:
| Quote: | Advice please, as I'm not familiar with satellite TV computer type PCI
cards. I'm looking for the facility to record the mpeg2 data directly
to disk.
As an example, new to the UK market is a Freecom DVB-T 'stick' for
terrestrial TV that plugs in a laptop. (Win XP only)
http://www.dabs.com/ProductView.aspx?Quicklinx=3S2L
http://www.freecom.com/ecProduct_detail.asp?ID=2234&nr=25451&prodn=DVB%2DT+USB+Stick
The device receives but doesn't decode the signals, passing the
required multiplex via USB into the computer. Using this device the
incoming mpeg 2 data can be recorded directly to disk. This makes an
efficient way to record progamme material.
I am guessing that recording the mpeg2 stream directly to disk would
be a feature of the software package. Is this a normal feature of all
PCI tuner cards, or are there only some, or none offering the
facility?
Roger
Some points: |
The so called 'budget cards' output the transport stream, this is the
data stream as transmitted by satellite transponder.
Within this stream is mpeg2 for picture, and mp2 for audio, or ac3 for
audio perhaps, several tables, encryption data, teletext, what not.
Some cards allow you to filter this stream so only the required mpeg2
and mp2 (for example) for the staion you selected are transferred.
The station is then recorded in .pes format (audio + video).
I dunno about these cards you mention, but most manufacturers will include
software to record the .pes to disk (as xxx.mpg perhaps).
Some more expenive cards (my old SkyStar1 for example) do some twiddling with
the transport stream, and the record in a propriety format (av_pes) .pva.
These days I use a wintvnova, you can use it to record clean .ts (transport
stream) for any PIDS you need from the transponder.
I do not see the advantage of a USB interface.... cept perhaps if you upgrade
the PC and it only has the new PCI slots and you cannot use the old card.
But then as DVB-S2 is coming, you will need to upgrade your TV PCI card anyways,
and industry will have you upgrade your PC and rest of stuff every 2 to 4 years
so who cares.
If you want to receive encrypted channels.... there is more to it, you
may need a card with a common interface (that accepts modules)...
Can be done in software too... make sure your card can do clean .ts. |
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Roger R
Guest
|
| Posted:
Wed Nov 30, 2005 5:08 pm Post subject:
Re: Satellite DVB-S PCI cards, record data to disk? |
|
|
"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:dmkekh$g0l$1@news.datemas.de...
| Quote: | On a sunny day (Wed, 30 Nov 2005 14:33:51 -0000) it happened "Roger
R"
telstar461703@clara4co.uk.invalid> wrote in
1133361177.4369.0@echo.uk.clara.net>:
Advice please, as I'm not familiar with satellite TV computer type
PCI
cards. I'm looking for the facility to record the mpeg2 data
directly
to disk.
As an example, new to the UK market is a Freecom DVB-T 'stick' for
terrestrial TV that plugs in a laptop. (Win XP only)
The device receives but doesn't decode the signals, passing the
required multiplex via USB into the computer. Using this device
the
incoming mpeg 2 data can be recorded directly to disk. This makes
an
efficient way to record progamme material.
I am guessing that recording the mpeg2 stream directly to disk
would
be a feature of the software package. Is this a normal feature of
all
PCI tuner cards, or are there only some, or none offering the
facility?
Some points:
The so called 'budget cards' output the transport stream, this is
the
data stream as transmitted by satellite transponder.
Within this stream is mpeg2 for picture, and mp2 for audio, or ac3
for
audio perhaps, several tables, encryption data, teletext, what not.
Some cards allow you to filter this stream so only the required
mpeg2
and mp2 (for example) for the staion you selected are transferred.
The station is then recorded in .pes format (audio + video).
I dunno about these cards you mention, but most manufacturers will
include
software to record the .pes to disk (as xxx.mpg perhaps).
Some more expenive cards (my old SkyStar1 for example) do some
twiddling with
the transport stream, and the record in a propriety format (av_pes)
..pva.
These days I use a wintvnova, you can use it to record clean .ts
(transport
stream) for any PIDS you need from the transponder.
I do not see the advantage of a USB interface.... cept perhaps if
you upgrade |
Thanks Jan for the very prompt reply.
What I'm trying to do is to burn a couple of extra disks immediately
from what I've recorded.
As it is now, I have two options
1. A stand alone DVD recorder.
2. Using a software capture package to record an AVI file to disk.
For the stand alone DVD recorder I can take the disk produced, pop it
in the computer, 'burn' the disk to an 'Image file' and then
immediatly burn more disks from that using the computer DVD recorder.
The problem with this is the material cannot be edited between the DVD
recorder and making more disks. For the for the sort of stuff I'm
recording, news clips etc, only bits of what's on the first disk are
required. If use something like TMPEnc to chop up the original it
then has to be rendered to get a new mpeg file and that takes forever.
If I use method 2, a software package such as Ulead VideoStudio to
'capture' the programme in .AVI format - a wrapper including all the
various PID's data - editing is strightforward but again the result
must be rendered before a disk can be burnt and that too takes
forever.
So I'm trying to capture material in a format that I can edit and the
burn a disk immediately without having to render the whole thing.
Perhaps I just don't get the implications of the tasks involved, and
this cannot be done, but somehow I have the notion that if I can
record the mpeg2 file directly to the hard drive, a disk may be burnt
directly from this.
By the way the point of the USB interface is, AIUI, the device is
intended for lap tops where there simply is no room or place for an
internal card.
Roger |
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Jan Panteltje
Guest
|
| Posted:
Thu Dec 01, 2005 1:08 am Post subject:
Re: Satellite DVB-S PCI cards, record data to disk? |
|
|
On a sunny day (Wed, 30 Nov 2005 16:12:51 -0000) it happened "Roger R"
<telstar461703@clara4co.uk.invalid> wrote in
<1133367167.7716.0@nnrp-t71-02.news.uk.clara.net>:
| Quote: |
"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:dmkekh$g0l$1@news.datemas.de...
On a sunny day (Wed, 30 Nov 2005 14:33:51 -0000) it happened "Roger
R"
telstar461703@clara4co.uk.invalid> wrote in
1133361177.4369.0@echo.uk.clara.net>:
Advice please, as I'm not familiar with satellite TV computer type
PCI
cards. I'm looking for the facility to record the mpeg2 data
directly
to disk.
As an example, new to the UK market is a Freecom DVB-T 'stick' for
terrestrial TV that plugs in a laptop. (Win XP only)
The device receives but doesn't decode the signals, passing the
required multiplex via USB into the computer. Using this device
the
incoming mpeg 2 data can be recorded directly to disk. This makes
an
efficient way to record progamme material.
I am guessing that recording the mpeg2 stream directly to disk
would
be a feature of the software package. Is this a normal feature of
all
PCI tuner cards, or are there only some, or none offering the
facility?
Some points:
The so called 'budget cards' output the transport stream, this is
the
data stream as transmitted by satellite transponder.
Within this stream is mpeg2 for picture, and mp2 for audio, or ac3
for
audio perhaps, several tables, encryption data, teletext, what not.
Some cards allow you to filter this stream so only the required
mpeg2
and mp2 (for example) for the staion you selected are transferred.
The station is then recorded in .pes format (audio + video).
I dunno about these cards you mention, but most manufacturers will
include
software to record the .pes to disk (as xxx.mpg perhaps).
Some more expenive cards (my old SkyStar1 for example) do some
twiddling with
the transport stream, and the record in a propriety format (av_pes)
.pva.
These days I use a wintvnova, you can use it to record clean .ts
(transport
stream) for any PIDS you need from the transponder.
I do not see the advantage of a USB interface.... cept perhaps if
you upgrade
Thanks Jan for the very prompt reply.
What I'm trying to do is to burn a couple of extra disks immediately
from what I've recorded.
As it is now, I have two options
1. A stand alone DVD recorder.
2. Using a software capture package to record an AVI file to disk.
For the stand alone DVD recorder I can take the disk produced, pop it
in the computer, 'burn' the disk to an 'Image file' and then
immediatly burn more disks from that using the computer DVD recorder.
The problem with this is the material cannot be edited between the DVD
recorder and making more disks. For the for the sort of stuff I'm
recording, news clips etc, only bits of what's on the first disk are
required. If use something like TMPEnc to chop up the original it
then has to be rendered to get a new mpeg file and that takes forever.
If I use method 2, a software package such as Ulead VideoStudio to
'capture' the programme in .AVI format - a wrapper including all the
various PID's data - editing is strightforward but again the result
must be rendered before a disk can be burnt and that too takes
forever.
So I'm trying to capture material in a format that I can edit and the
burn a disk immediately without having to render the whole thing.
Perhaps I just don't get the implications of the tasks involved, and
this cannot be done, but somehow I have the notion that if I can
record the mpeg2 file directly to the hard drive, a disk may be burnt
directly from this.
By the way the point of the USB interface is, AIUI, the device is
intended for lap tops where there simply is no room or place for an
internal card.
Roger
Well I am doing what you want, but I am doing it in Linux. |
In Linux the simplest program is perhaps dvbstream, it can output the
transport stream.
I use this:
xdipo (tuning program), this will record .ts with the required pids (audio
video).
Then I think LVE (Linux Video Editor) can just cut commercials out of .ts these
days, but I demux and fix some headers first and then edit .mpg
(Demux only takes 2 minutes)
Then that can, without commercials, be burned to dvd with for example dvdauthor.
It is all on my page:
http://panteltje.com/panteltje/dvd/
I am 99% sure that in windows with various free software you can record the
mpeg2+audio.
dvdauthor has been ported to windows too IIRC.
I mean you need not re-encode at all... UNLESS perhaps you want to cut not
on a GOP boundary.
Good mpeg2 editing programs will allow you to cut on each frame, with only
re-encoding that group of pictures.
Womble mpeg editor?
The commercials VERY likely start on a GOP, never had a problem with that and
LVE.
If you record mpeg2 and use an editor like that, and a DECENT burning program,
nothing will be re-encoded, not even the audio. |
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