[linux-dvb] Re: Technotrend DVB-C C-1200 TT-Connect

Mario Rossi mariofutire at googlemail.com
Tue Apr 24 20:44:40 CEST 2007


>As I said, it does work, but I don't think that its working correctly.
>I have tried under Gentoo and under Ubuntu Fiesty with 2.6.20 kernel,
>and under both, things start to eventually jitter slightly and every
>few seconds frames are dropped. This doesn't seem to happen under
>windows for some reason. The only difference that I can physically see
>is the LED colour on the front. I am not sure if USB 1.1 is capable of
>handling the mpeg2 stream. I suspect that windows is applying some
>compression that allows the stream to be able to be played without any
>speed issue. Short of looking at the module source and try to contact
>the original author, I am not sure where to find any further info.

Hi,

I've had a Hauppauge DEC T 2000 (dvb terrestrial) which worked on USB
1.1 and I did not have any problem with the bandwidth.

I think it would be very unlikely that the board compresses the MPEG2
stream before sending it to the PC.
It is more likely some settings are wrong.

Maybe you could do something like

http://www.linuxtv.org/v4lwiki/index.php/USBVideo

sniff the windows USB stream and then compare it to what happens in linux.
With some help from the guys in linuxtv.org, it could be possible to
see if some settings are missing.

Cheers



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