[linux-dvb] Need Help with PCTV 452e (USB DVB-S2 device with STB0899)
dkuhlen at gmx.net
Fri Feb 29 23:25:17 CET 2008
On Friday 22 February 2008, Dominik Kuhlen wrote:
> > Great, that was the trick, now scanning and szap work fine.
> > Thanks for that hint!
> You're welcome.
> BTW: do you receive broken streams (symbol rate 22000 or 27500)?
> Currently I get a loss of about 1 TS packet every second or even more (with both symbol rates).
> And there is exactly one TS packet missing (I diffed a TS hexdump).
> If it were the USB controller that drops packets it would be a loss of 5 consecutive TS packets. (940 bytes iso frame size)
I have to correct that statement (I didn't record the whole TS):
The loss is exactly one USB frame (5 consecutive TS packets in this case)
which happens about every 1000 TS packets (200 USB frames)
I'll do further testings with different frame sizes the next days...
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