[MeeGo-dev] DVB support on MeeGo

2010-10-27 Thread vijay singh
Hello,
I want to know do we have support for DVB under MeeGo 1.0 or planned
MeeGo 1.1 release.

Bye--

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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-27 Thread Clark, Joel
Top Google hit  DVB = Democratic Voice of Burma.


-Original Message-
From: meego-dev-boun...@meego.com [mailto:meego-dev-boun...@meego.com] On 
Behalf Of vijay singh
Sent: Wednesday, October 27, 2010 10:43 PM
To: meego-dev@meego.com; meego-ker...@meego.com
Subject: [MeeGo-dev] DVB support on MeeGo

Hello,
I want to know do we have support for DVB under MeeGo 1.0 or planned
MeeGo 1.1 release.

Bye--

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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-27 Thread vijay singh
It is Digital Video Broadcast.

//http://linuxtv.org/wiki/index.php/How_to_install_DVB_device_drivers
//http://linuxtv.org/wiki/index.php/What_is_V4L_or_DVB%3F

On Wed, 2010-10-27 at 23:55 -0600, Clark, Joel wrote:
> Top Google hit  DVB = Democratic Voice of Burma.
> 
> 
> -Original Message-
> From: meego-dev-boun...@meego.com [mailto:meego-dev-boun...@meego.com] On 
> Behalf Of vijay singh
> Sent: Wednesday, October 27, 2010 10:43 PM
> To: meego-dev@meego.com; meego-ker...@meego.com
> Subject: [MeeGo-dev] DVB support on MeeGo
> 
> Hello,
> I want to know do we have support for DVB under MeeGo 1.0 or planned
> MeeGo 1.1 release.
> 
> Bye--
> 
> ___
> MeeGo-dev mailing list
> MeeGo-dev@meego.com
> http://lists.meego.com/listinfo/meego-dev


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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-27 Thread Zhang, Zheng
DVB = digital video broadcast
It need support middle layer support, no relation with MeeGo core
Parser/codec should be there via gstreamer, I remember there is a V4L plugin 
for gstreamer, while V4L support DTV
So It should be ok

-Original Message-
From: meego-dev-boun...@meego.com [mailto:meego-dev-boun...@meego.com] On 
Behalf Of Clark, Joel
Sent: Thursday, October 28, 2010 1:56 PM
To: vijay singh; meego-dev@meego.com
Subject: Re: [MeeGo-dev] DVB support on MeeGo

Top Google hit  DVB = Democratic Voice of Burma.


-Original Message-
From: meego-dev-boun...@meego.com [mailto:meego-dev-boun...@meego.com] On 
Behalf Of vijay singh
Sent: Wednesday, October 27, 2010 10:43 PM
To: meego-dev@meego.com; meego-ker...@meego.com
Subject: [MeeGo-dev] DVB support on MeeGo

Hello,
I want to know do we have support for DVB under MeeGo 1.0 or planned
MeeGo 1.1 release.

Bye--

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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-27 Thread Ji, Jessica
No this plan now.

Best Regards 

Jessica.

Intel Asia-Pacific R&D Ltd.[INET] 8821-6598 

-Original Message-
From: meego-dev-boun...@meego.com [mailto:meego-dev-boun...@meego.com] On 
Behalf Of vijay singh
Sent: 2010年10月28日 13:43
To: meego-dev@meego.com; meego-ker...@meego.com
Subject: [MeeGo-dev] DVB support on MeeGo

Hello,
I want to know do we have support for DVB under MeeGo 1.0 or planned
MeeGo 1.1 release.

Bye--

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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-28 Thread Rudolf Streif
Vijay,

There is actually no simple and straightforward answer to any system
supporting Digital Video Broadcasting because it is a multilayer
architecture.

DVB uses MPEG-2 Transport Streams (MP2TS) as defined by ISO/IEC 13818-1
Systems with DVB-specific Service Information (SI) as specified in ETSI EN
300 468.

For transmission these streams are modulated onto a bearer. What the bearer
is depends on the transmission system. Hence, DVB specifies multiple
standards: DVB-S and DVB-S2 for satellite transmission, DVB-SH for satellite
transmission to handhelds, DVB-C and DVB-C2 for cable transmission, DVB-T
and DVB-T2 for terrestrial transmission, and DVB-H for terrestrial
transmission to handhelds. The standards use different modulation and
modulation schemes such as QAM, PSK, QPSK, APSK, etc. Most recently
DVB-compliant MP2TS are also used in IPTV and there the transmission is an
IP network using UDP unicast/multicast and/or TCP dependent on the
application. Sometimes for IPTV the streams are RTP-encapsulated and may
also use Quality of Experience (QE) technologies such as Cisco's VQE or
Alcatel-Lucent's FCC/RET.

Here starts the first layer of the problem. Dependent on how your MeeGo
system will receive the DVB MP2TS you will need hardware to do the
demodulation. For that you will obviously a driver, typically a character
device driver as kernel module. If your system receives the stream via IP
you are all set.

Once you got to MP2TS you will have to demultiplex it. MeeGo uses gstreamer
and one of the container formats it supports is MP2TS. After that the
elementary streams need to be decoded. Most importantly video and audio and
for that gsteamer supports a variety of codecs. If you need to be able to
decode the SI for EPG etc. in the DVB MP2TS then you will probably need a
plugin for gstreamer to decode it.

DVB television programs may be encrypted with a CA system. That adds another
layer of complexity since you wont be able to decode the elementary streams
unless they are decrypted. DVB systems mostly use transport scrambling
control meaning the payload of the MP2TS packets is encrypted. What packets
are encrypted is indicated by the 2 TSC (transport scrambling control) bits
in the MP2TS header.

Best regards,
Rudi



On Wed, Oct 27, 2010 at 10:43 PM, vijay singh  wrote:

> Hello,
> I want to know do we have support for DVB under MeeGo 1.0 or planned
> MeeGo 1.1 release.
>
> Bye--
>
> ___
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> MeeGo-dev@meego.com
> http://lists.meego.com/listinfo/meego-dev
>
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-28 Thread Randolph Dohm
DVB-T Support needs a connector to the antenna?
there was only ONE phone having DBV-T in the phone:
Gigabyte T 600
http://www.gigabytecm.com/Eng/ProductOview.aspx?pid=40

that would be a selling success, if any nokia hardware would allow
with meego to watch terrestrial tv on the phone...

2010/10/28 Rudolf Streif :
 DVB-T
> and DVB-T2 for terrestrial transmission,
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-28 Thread Ross Burton
On Thu, 2010-10-28 at 19:35 +0200, Randolph Dohm wrote:
> DVB-T Support needs a connector to the antenna?
> there was only ONE phone having DBV-T in the phone:
> Gigabyte T 600
> http://www.gigabytecm.com/Eng/ProductOview.aspx?pid=40
> 
> that would be a selling success, if any nokia hardware would allow
> with meego to watch terrestrial tv on the phone...

Several Nokia phones support DVB-H though I don't know where that is
transmitted...

Personally I've dubious that proper TV-in-a-phone is that useful.  On
demand playback with the ability to pause and so on for when I have to
get off a train, sure.

Ross
-- 
Intel Open Source Technology Centre
http://oss.intel.com/


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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-28 Thread Randolph Dohm
Hi Ross,
no, it is not about DVB-H, that is dead born, it is about DVB-T.
So users can watch TV without payment like in any TV.
That makes the success, if it is default in. Nokias Key.

2010/10/28 Ross Burton :
> On Thu, 2010-10-28 at 19:35 +0200, Randolph Dohm wrote:
>> DVB-T Support needs a connector to the antenna?
>> there was only ONE phone having DBV-T in the phone:
>> Gigabyte T 600
>> http://www.gigabytecm.com/Eng/ProductOview.aspx?pid=40
>>
>> that would be a selling success, if any nokia hardware would allow
>> with meego to watch terrestrial tv on the phone...
>
> Several Nokia phones support DVB-H though I don't know where that is
> transmitted...
>
> Personally I've dubious that proper TV-in-a-phone is that useful.  On
> demand playback with the ability to pause and so on for when I have to
> get off a train, sure.
>
> Ross
> --
> Intel Open Source Technology Centre
> http://oss.intel.com/
>
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-28 Thread Ross Burton
On Thu, 2010-10-28 at 21:40 +0200, Randolph Dohm wrote:
> Hi Ross,
> no, it is not about DVB-H, that is dead born, it is about DVB-T.
> So users can watch TV without payment like in any TV.
> That makes the success, if it is default in. Nokias Key.

If I want to watch DVB-T at home I need a rather large aerial that is
aimed at the transmitter.  How does that work on a mobile device?

Ross
-- 
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http://oss.intel.com/
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-28 Thread Randolph Dohm
2010/10/28 Ross Burton :
> If I want to watch DVB-T at home I need a rather large aerial that is
> aimed at the transmitter.  How does that work on a mobile device?

ask, Gigabyte T 600
http://www.gigabytecm.com/Eng/ProductOview.aspx?pid=40
if you are from intel, I wounder why you haven´t minituarized that chip already.
That is why politicians say to buy japanese instead of german, because
the technical engineers here sleep over the hybrid cars.
Maybe Intel, the MOTHER of small chips, does not know how gigabyte
makes small DVB-T chips?
Honey, this is the REAL link between Nokia and Intel, you should
explore after nokia announced to use ARM chips only.
N9 with DVB-T on Meego would be a worldwide successfactor against
android and google/apple TV.
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-28 Thread Rudolf Streif
I am afraid we are losing the focus in regards to Vijay's original question.
Vijay did not say for what type of device he is looking for DVB support from
MeeGo.

Digital television, DVB-T and ATSC, requires different antennae then analog
TV for UHF/VHF. For those the aerials had to be pointed to the transmitter.
For DTV that is typically not necessary. It is possible to receive the
signals with simple "rabbit ears" even from inside a home. However, that is
as usual dependent on environmental and other factors.

Rudi

On Thu, Oct 28, 2010 at 1:05 PM, Ross Burton  wrote:

> On Thu, 2010-10-28 at 21:40 +0200, Randolph Dohm wrote:
> > Hi Ross,
> > no, it is not about DVB-H, that is dead born, it is about DVB-T.
> > So users can watch TV without payment like in any TV.
> > That makes the success, if it is default in. Nokias Key.
>
> If I want to watch DVB-T at home I need a rather large aerial that is
> aimed at the transmitter.  How does that work on a mobile device?
>
> Ross
> --
> Intel Open Source Technology Centre
> http://oss.intel.com/
>
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-28 Thread vijay singh
Hi,
Currently it is not getting detected with MeeGo1.0 release.

I am testing below DVB-t device.

CINERGY DT USB XS.
//http://www.terratec.net/en/products/tv/dvbt.html

Please let me know if any one tested DVB-t on MeeGo or any plan to
provide support for all DVB device in MeeGo.

Cheers--

On Thu, 2010-10-28 at 13:29 -0700, Rudolf Streif wrote:
> I am afraid we are losing the focus in regards to Vijay's original
> question. Vijay did not say for what type of device he is looking for
> DVB support from MeeGo.
> 
> 
> Digital television, DVB-T and ATSC, requires different antennae then
> analog TV for UHF/VHF. For those the aerials had to be pointed to the
> transmitter. For DTV that is typically not necessary. It is possible
> to receive the signals with simple "rabbit ears" even from inside a
> home. However, that is as usual dependent on environmental and other
> factors.
> 
> 
> Rudi
> 
> On Thu, Oct 28, 2010 at 1:05 PM, Ross Burton 
> wrote:
> On Thu, 2010-10-28 at 21:40 +0200, Randolph Dohm wrote:
> > Hi Ross,
> > no, it is not about DVB-H, that is dead born, it is about
> DVB-T.
> > So users can watch TV without payment like in any TV.
> > That makes the success, if it is default in. Nokias Key.
> 
> 
> If I want to watch DVB-T at home I need a rather large aerial
> that is
> aimed at the transmitter.  How does that work on a mobile
> device?
> 
> 
> Ross
> --
> Intel Open Source Technology Centre
> http://oss.intel.com/
> 
> 
> 
> 
> 
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-29 Thread Michał Sawicz
Dnia 2010-10-29, pią o godzinie 10:04 +0530, vijay singh pisze:
> Please let me know if any one tested DVB-t on MeeGo or any plan to
> provide support for all DVB device in MeeGo. 

Can you confirm that this adapter works with other distributions? If
that's the case, the main issue would be to ship the drivers - maybe as
a separate package?

Also it needs verifying that gstreamer is built with dvb support for
meego - that could probably be shipped as a separate package, too. A
media player with dvb support (i.e. Totem) would also be needed.

IMO there are many USB DVB-T dongles and it would be great if MeeGo
could support them out of the box or after just installing some 'TV
Support' metapackage.

-- 
Michał Sawicz 

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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-29 Thread vijay singh
On Fri, 2010-10-29 at 11:58 +0200, Michał Sawicz wrote:
> Dnia 2010-10-29, pią o godzinie 10:04 +0530, vijay singh pisze:
> > Please let me know if any one tested DVB-t on MeeGo or any plan to
> > provide support for all DVB device in MeeGo. 
> 
> Can you confirm that this adapter works with other distributions? If
> that's the case, the main issue would be to ship the drivers - maybe as
> a separate package?
> 
> Also it needs verifying that gstreamer is built with dvb support for
> meego - that could probably be shipped as a separate package, too. A
> media player with dvb support (i.e. Totem) would also be needed.
> 
> IMO there are many USB DVB-T dongles and it would be great if MeeGo
> could support them out of the box or after just installing some 'TV
> Support' metapackage.
> 
it will work for Ubuntu10.04.


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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-29 Thread Randolph Dohm
there are many open source apps to view DVB-T

http://sourceforge.net/search/?words=dvb-t

There is even a plugin for Audacious Player  and VLC player
Driver can be loaded from the webpage of the USB DVB-T Stick, there
are many with a linux driver..

But better adding a non-mico-usb port to add them, better add a DVB-T
chip into the phone.
and a second USB with USB to KOAXIAL adapter for the antenna.

2010/10/29 Michał Sawicz :

> Also it needs verifying that gstreamer is built with dvb support for
> meego - that could probably be shipped as a separate package, too. A
> media player with dvb support (i.e. Totem) would also be needed.
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-29 Thread Michał Sawicz
Dnia 2010-10-29, pią o godzinie 16:14 +0200, Randolph Dohm pisze:
> there are many open source apps to view DVB-T
> 
> http://sourceforge.net/search/?words=dvb-t

Of course.

> There is even a plugin for Audacious Player  and VLC player
> Driver can be loaded from the webpage of the USB DVB-T Stick, there
> are many with a linux driver..

I suppose it's Banshee that should get DVB support for Netbook image, it
being the default _media_ player.

> But better adding a non-mico-usb port to add them, better add a DVB-T
> chip into the phone.
> and a second USB with USB to KOAXIAL adapter for the antenna. 

Sure, but that's kinda out of scope for MeeGo as a software platform.

-- 
Michał Sawicz 

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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-29 Thread Randolph Dohm
2010/10/29 Michał Sawicz :
> I suppose it's Banshee that should get DVB support for Netbook image, it
> being the default _media_ player.

http://tizi.tv/de/index.html

http://www.heise.de/newsticker/meldung/DVB-T-Empfaenger-mit-WLAN-Hotspot-fuer-iOS-Geraete-1127742.html
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-29 Thread Michał Sawicz
Dnia 2010-10-29, pią o godzinie 21:34 +0200, Randolph Dohm pisze:
> http://tizi.tv/de/index.html
> 
> http://www.heise.de/newsticker/meldung/DVB-T-Empfaenger-mit-WLAN-Hotspot-fuer-iOS-Geraete-1127742.html
>  

That doesn't really look like "DVB support in MeeGo"... It's the 'tizi'
that has a DVB-T tuner and streams received channel over WiFi (probably
using a proprietary protocol). Sure, it would work with MeeGo, provided
tizi would port the app to MeeGo or someone would write one. Not that
big of a market, though, IMO.

I'd rather have a DVB-T tuner built into the device (I seriously doubt
that will happen for any worldwide hardware, see [1]) or connectable
through USB.

[1] http://en.wikipedia.org/wiki/File:Digital_broadcast_standards.svg

-- 
Michał Sawicz 

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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-29 Thread Auke Kok

On 10/29/10 04:42, vijay singh wrote:

On Fri, 2010-10-29 at 11:58 +0200, Michał Sawicz wrote:

Dnia 2010-10-29, pią o godzinie 10:04 +0530, vijay singh pisze:

Please let me know if any one tested DVB-t on MeeGo or any plan to
provide support for all DVB device in MeeGo.


Can you confirm that this adapter works with other distributions? If
that's the case, the main issue would be to ship the drivers - maybe as
a separate package?


it will work for Ubuntu10.04.


I hate to say this, but the fact that "it works in ubuntu" does not mean 
anything, as there are too many applications in ubuntu that we will 
never be able to ship due to licensing restrictions etc. Is it shipped 
as part of a default unmodified upstream kernel? Does it require 
MPEG-licensed components?


Remember, DVB-t adapters generally are MPEG encoders and, in order to 
decode that, you need a MPEG-decoder and that means it can't be 
distributed freely without getting a License



Auke
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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-29 Thread Michał Sawicz
Dnia 2010-10-29, pią o godzinie 13:28 -0700, Auke Kok pisze:
> 
> I hate to say this, but the fact that "it works in ubuntu" does not
> mean 
> anything, as there are too many applications in ubuntu that we will 
> never be able to ship due to licensing restrictions etc. Is it
> shipped 
> as part of a default unmodified upstream kernel? Does it require 
> MPEG-licensed components?

Support for DVB adapters (hardware) is there in upstream kernel, being
developed by the LinuxTV project [1]. A list of hardware supported
out-of-the box (provided the relevant kernel options are enabled) can be
found at [2]. A problem with USB devices is that a lot of them require
firmware to be loaded onto them, which I believe poses another legal
obstacle.

> Remember, DVB-t adapters generally are MPEG encoders and, in order to 
> decode that, you need a MPEG-decoder and that means it can't be 
> distributed freely without getting a License 

There are less and less hardware MPEG decoders in DVB adapters.
Everything happens in software. Most popular formats are:
- MPEG-2 video and audio,
- H.264 video,
- AC3 audio.

From my experience the above covers most of DVB broadcasts. I have not
stumbled upon any other stream. As an addition teletext is broadcasted
and AFAIK there's no gstreamer element to decode that.

Don't devices today come with support for even the advanced - H.264
codec? And some of them even accelerated in hardware?

I'm not saying MeeGo spec should require support for DVB, but it should,
IMO, do everything it can to ease vendors with providing that support.
For handhelds it would be a grand plus. For IVI it should be a
standard. 

[1] http://linuxtv.org/
[2] http://linuxtv.org/wiki/index.php/Hardware_Device_Information

-- 
Michał Sawicz 

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Re: [MeeGo-dev] DVB support on MeeGo

2010-10-29 Thread Nicolas Dufresne
Le vendredi 29 octobre 2010 à 13:28 -0700, Auke Kok a écrit :

> I hate to say this, but the fact that "it works in ubuntu" does not
> mean 
> anything, as there are too many applications in ubuntu that we will 
> never be able to ship due to licensing restrictions etc. Is it
> shipped 
> as part of a default unmodified upstream kernel? Does it require 
> MPEG-licensed components? 

DVB Kernel driver does not deal with encoding/decoding MPEG unless this
is implemented by hardware (in which case the licence is part of the
hardware price).

I think the request here is as simple as, is it possible to include DVB
linux stack in the Linux drivers ? Getting the rest of the softwares is
much easier task since it can be done by an independent team.

regards,
Nicolas (alias stormer)


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Re: [MeeGo-dev] DVB support on MeeGo

2010-11-01 Thread Ross Burton
On Fri, 2010-10-29 at 13:28 -0700, Auke Kok wrote:
> Remember, DVB-t adapters generally are MPEG encoders 

DVB is MPEG already, so they won't be encoding.  Some have hardware
decoders but these days they are normally no more than TS
demultiplexers.

Ross
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Re: [MeeGo-dev] DVB support on MeeGo

2010-11-01 Thread Rudolf Streif
As I said in my earlier post most of the software required to demultiplex
and decode DVB-compliant MPEG2 transport streams is already available in
MeeGo. Gstreamer handles the demuxing of the TS and the plugins can handle
the video and audio decoding. For video it is typically MPEG-2 for standard
definition and MPEG-4 Part 10 (H.264) for high definition (sometimes also
for SD to gain bandwidth). Audio typically is AC3.

What's missing is decoding of the Service Information if required and
eventually the Teletext. Although DVB defines Teletext encoding as stream it
is not that commonly used. Many operators are still using the VBI-encoding
from the analog days and in that case the Teletext is found in the video
stream.

Most, and in particular cheap, DVB hardware does not support any demuxing
and decoding at all. It's only a tuner/demodulator. The kernel driver for
the hardware will then only allow tuning to a particular channel and then
deliver the MPEG-2 TS to the user level application.

If all you want to do is watch DVB TV on your MeeGo device all you need is
tuner/demod hardware, a character device driver for it to control it and to
read the MPEG-2 TS from.

Rudi

On Fri, Oct 29, 2010 at 2:49 PM, Nicolas Dufresne <
nicolas.dufre...@gmail.com> wrote:

>  Le vendredi 29 octobre 2010 à 13:28 -0700, Auke Kok a écrit :
>
>  I hate to say this, but the fact that "it works in ubuntu" does not mean
> anything, as there are too many applications in ubuntu that we will
> never be able to ship due to licensing restrictions etc. Is it shipped
> as part of a default unmodified upstream kernel? Does it require
> MPEG-licensed components?
>
> DVB Kernel driver does not deal with encoding/decoding MPEG unless this is
> implemented by hardware (in which case the licence is part of the hardware
> price).
>
> I think the request here is as simple as, is it possible to include DVB
> linux stack in the Linux drivers ? Getting the rest of the softwares is much
> easier task since it can be done by an independent team.
>
> regards,
> Nicolas (alias stormer)
>
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Re: [MeeGo-dev] DVB support on MeeGo

2010-11-02 Thread Damien Lespiau
On Mon, 2010-11-01 at 17:25 +, Rudolf Streif wrote:

> What's missing is decoding of the Service Information if required

Well, GStreamer does provide a mean to get access to decoded version of
some of the DVB-SI tables (PAT, PMT, NIT, SDT, EIT) that's what
gnome-dvb-daemon uses for instance.

> and eventually the Teletext. Although DVB defines Teletext encoding as
> stream it is not that commonly used. Many operators are still using
> the VBI-encoding from the analog days and in that case the Teletext is
> found in the video stream.

You do have a vbidec element in -bad, no idea how well it'd work though.
http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/gst/vbidec

and a teletex subtitles element, with the same comment.
http://github.com/sebp/gst-teletext/tree

-- 
Damien


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