[linux-dvb] [PATCH] DMX_OUT_TSDEMUX_TAP: record two streams from same mux, resend

[Andrea <mariofutire@googlemail.com>]

 > Hi there,

 > This is what you want for capturing multiple audio streams from the same
 > multiplex simultaneously: open demux0 several times and send
 > depacketised output there. And capturing a single video stream is fine
 > too: open dvr0. But for capturing multiple video streams, it's surely
 > not what you want: you want multi-open (so demux0, not dvr0), but you
 > want the TS nature preserved (because that's what you want on output, as
 > you're going to re-multiplex it with the audio).

Can I ask your opinion on the best solution for:

I would like to have 2 separate TS (audio + video + subtitles...) for 2 channels (same frequency).
Is it possible to set a DMX_SET_PES_FILTER with many pids?

Ideally I would like to multi-open the demux, set a PES filter for a few pids (currently I can do 
only for 1), read from demux and save the TS.

So that I can have more the one applications running.

What I can do now is: multi-open the demux, set filter -1 (i.e. get everything), read, and only save 
the pids I want.

I was just wondering what is the best solution.
I don't like to get many times the whole TS. It's a bit of a waste.

 > At least one existing solution -- GStreamer -- sends all its streams
 > simultaneously via dvr0 and demuxes again in userland, but it seems a
 > bit of a shame to pick out all the PIDs in kernel, stick them back
 > together in kernel, and send them to userland only to get unpicked
 > again, when the alternative is such a small API addition.

Andrea

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