Mailing List Archive: MythTV: Dev

Re: [PATCH] Enable recording of encrypted channels withoutdecrypting them first.

Index | Next | Previous | View Threaded

wf_myth_user at online

Jul 15, 2010, 1:05 PM

Post #1 of 4 (577 views)
Permalink

Re: [PATCH] Enable recording of encrypted channels withoutdecrypting them first.

>Storing an encrypted stream is not a DMCA violation (as it hasn't been
>decrypted), and I don't see using a CAM to decrypt as a DMCA violation
>either (Its fully supported in myth anyway) as the CAM contains a licensed
>card.
>Now, I'm totally not a lawyer, nor even a developer, so apologies for
>speaking out.
>So the difference is merely storing an encrypted stream and decrypting it
>(with a valid license) later
>I don't think this is a DMCA violation at all, but I could be entirley
>wrong.
>Who cares wether it's decrypted sooner or later, the copyright holders
>might be more upset it's being stored at all, but they'd be more upset if
>it was stored unencrypted (as currently) surely?

>Mark

My parents PVR5020(Echostar) does exactly this.
It can record up to 4 programs at the same time encrypted or not.
Each night at 3:00 it decrypts all recordings.
If you watch a recording before it is decrypted it decrypts the recording
while watching.
All with original cam and smartcard from the provider.
This is sold as a legal solution here in the Netherlands(Europe).

If mythtv could work like this it would be a very very nice feature because
it would give the multirec options much more use.

Next question is, if you have a DVB-card with a Common Interface.
Will the common interface be directly available to mythtv to pass a file
true it.

Wim

__________ Informatie van ESET Smart Security, versie van database
viruskenmerken 5282 (20100715) __________

Het bericht is gecontroleerd door ESET Smart Security.

http://www.eset.com

_______________________________________________
mythtv-dev mailing list
mythtv-dev [at] mythtv
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev

james.dutton at gmail

Jul 15, 2010, 1:23 PM

Post #2 of 4 (551 views)
Permalink

Re: [PATCH] Enable recording of encrypted channels withoutdecrypting them first. [In reply to]

On 15 July 2010 21:05, <wf_myth_user [at] online> wrote:
>
>
>>Storing an encrypted stream is not a DMCA violation (as it hasn't been
>>decrypted), and I don't see using a CAM to decrypt as a DMCA violation
>>either (Its fully supported in myth anyway) as the CAM contains a licensed
>>card.
>>Now, I'm totally not a lawyer, nor even a developer, so apologies for
>>speaking out.
>>So the difference is merely storing an encrypted stream and decrypting it
>>(with a valid license) later
>>I don't think this is a DMCA violation at all, but I could be entirley
>>wrong.
>>Who cares wether it's decrypted sooner or later, the copyright holders
>>might be more upset it's being stored at all, but they'd be more upset if
>>it was stored unencrypted (as currently) surely?
>
>>Mark
>
>
> My parents PVR5020(Echostar) does exactly this.
> It can record up to 4 programs at the same time encrypted or not.
> Each night at 3:00 it decrypts all recordings.
> If you watch a recording before it is decrypted it decrypts the recording
> while watching.
> All with original cam and smartcard from the provider.
> This is sold as a legal solution here in the Netherlands(Europe).
>
> If mythtv could work like this it would be a very very nice feature because
> it would give the multirec options much more use.
>
> Next question is, if you have a DVB-card with a Common Interface.
> Will the common interface be directly available to mythtv to pass a file
> true it.
>

I think the problem is the USA is far more restrictive than Europe
with respect to Conditional access.
The main myth developers appear to be based in the USA, and this seems
to cause difficulty with improving myth with regards to conditional
access.
I think we can improve things, but we unfortunately cannot get it all
in the main myth tree.
I have been exploring what we can get into the main myth tree, and
trying to minimise the out of tree stuff.
_______________________________________________
mythtv-dev mailing list
mythtv-dev [at] mythtv
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev

johan.heikkila at gmail

Jul 15, 2010, 1:24 PM

Post #3 of 4 (557 views)
Permalink

Re: [PATCH] Enable recording of encrypted channels withoutdecrypting them first. [In reply to]

2010/7/15 <wf_myth_user [at] online>:
>
> My parents PVR5020(Echostar) does exactly this.
> It can record up to 4 programs at the same time encrypted or not.
> Each night at 3:00 it decrypts all recordings.
> If you watch a recording before it is decrypted it decrypts the recording
> while watching.
> All with original cam and smartcard from the provider.
> This is sold as a legal solution here in the Netherlands(Europe).
>
> If mythtv could work like this it would be a very very nice feature because
> it would give the multirec options much more use.
>
> Next question is, if you have a DVB-card with a Common Interface.
> Will the common interface be directly available to mythtv to pass a file
> true it.
>
> Wim
>

I agree that it would be very convenient. There are occasions when my
smartcard is not available, e.g. it is removed and used with another
TV. This causes 0 byte recordings by Mythtv.

Johan
_______________________________________________
mythtv-dev mailing list
mythtv-dev [at] mythtv
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev

james.dutton at gmail

Jul 15, 2010, 1:33 PM

Post #4 of 4 (557 views)
Permalink

Re: [PATCH] Enable recording of encrypted channels withoutdecrypting them first. [In reply to]

On 15 July 2010 21:24, Johan Heikkil� <johan.heikkila [at] gmail> wrote:
> 2010/7/15 �<wf_myth_user [at] online>:
>>
>> My parents PVR5020(Echostar) does exactly this.
>> It can record up to 4 programs at the same time encrypted or not.
>> Each night at 3:00 it decrypts all recordings.
>> If you watch a recording before it is decrypted it decrypts the recording
>> while watching.
>> All with original cam and smartcard from the provider.
>> This is sold as a legal solution here in the Netherlands(Europe).
>>
>> If mythtv could work like this it would be a very very nice feature because
>> it would give the multirec options much more use.
>>
>> Next question is, if you have a DVB-card with a Common Interface.
>> Will the common interface be directly available to mythtv to pass a file
>> true it.
>>
>> Wim
>>
>
> I agree that it would be very convenient. There are occasions when my
> smartcard is not available, e.g. it is removed and used with another
> TV. This causes 0 byte recordings by Mythtv.
>
> Johan

It should be doable.
There is a switch between the tuner and the CAM.
Data can go
1) tuner -> CAM -> PCI -> File -> display.
2) File -> PCI -> CAM -> PCI -> File -> display.
We just need to modify myth to be able to use option (2).
The DVB api already supports both (1) and (2), but it appears that
both (1) and (2) are illegal in the USA because CAM are only
authorised to be in STBs and not PCs.
_______________________________________________
mythtv-dev mailing list
mythtv-dev [at] mythtv
http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev

Index | Next | Previous | View Threaded

Interested in having your list archived? Contact Gossamer Threads