[linux-dvb] DVB file formats

Johannes Stezenbach js at linuxtv.org
Thu Jun 16 13:42:29 CEST 2005


Andrew de Quincey wrote:
> BTW: I was thinking last night. Do we actually need to know all the PMT 
> entries for the services.
> 
> On the sample for a channel, I have:
> es = <pid> <type> [<language>] [pcr]
> ...
> 
> Where I was expecting there to be a line for each entry in the PMT. 
> 
> However, the only reason for having this information is to speed up lock 
> times. We don't actually need information on _every_ ES - just the last 
> audio/video ES that the user selected. The rest can be pulled from the PMT 
> once the channel is up and running. Comments?

You need he pcr pid, too, but other pids are superflous for fast
zapping (well, maybe + ac3 pid).

Johannes




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