Testing multi CAM mode

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Klaus Schmidinger wrote:
> I have uploaded a patch against VDR 1.3.36 to
> 
>   ftp://ftp.cadsoft.de/vdr/Developer/vdr-1.3.36-multicamtest.diff
> 
> which is a first attempt to allow multiple channels to
> be decrypted at the same time, provided the CAM supports
> this.
> 
> There is currently no test whether this operation is possible
> or how many channels a given CAM can decrypt simultaneously,
> so use this with extreme care! This is just for testing!!
> 
> With my AlphaCrypt CAM I have successfully tested 3 parallel
> recordings of encrypted channels on the same transponder.
> 
> Now the reason why I am providing this patch is that I'd
> like to invite you folks to try this out and maybe see what
> might be wrong here. The problem is that whenever a channel
> is added or removed from the CA_PMT data, there are distortions
> in the recordings.
> ...

Meanwhile I got a message from Mascom (the manufacturer of the
AlphaCrypt CAM) and they told me that the current CAM firmware
actually has a problem there, and that it will be fixed in a
future version.

Klaus


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