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CAT PID missing

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we're using astra as a multicast to dvb-c converter.

We also want to forward some encrypted streams.

But activating smart cards doesn't work.

We suspect it's due to missing Conditional Access Tables (PID 1/table  id 1)

We've multiple input streams like this:


The input stream contains all necessary PIDs:




But the resulting transport stream is missing PID 1. Due to that the receiver can descramble the channel correctly (ECM pids) with activated cards but the mapping between CA system id and EMM pids (defined in the CAT/PID 1) is missing. Due to that card updates don't work.

How can we make astra send correct CAT tables (or at least pass PID 1 from one of the input streams).

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