[linux-dvb] Re: different picture size

[Matt <zagnimp@aom.bt.co.uk>]

Hi Ralph and Prakash,

Which cards to you use
the hauppauge card DVB uses the SDK from techotrend and I think
so does the siemens too please correct me if I am wrong but I am new
to this.

Are there any cards for Digtal and use mini dishes or are they all
analouge ones ?

Regards

Matt

Ralph Metzler wrote:

> prakash writes:
>  > 1)I just recorded the streams(using NAPI) from fashion tv and tv tunisia
>  >   and tried to playback with a standard decoder(mssg). The decoder says
>  >   the picture size is 480x576? Is this size correct, if so, how is it
>  >   displayed on the normal television?  How does the DVB card handel such
>  >   format?
>
> The MPEG-Dekoder on the card automatically scales 704x576, 544x576, 480x576,
> 352x576, and 352x288 to 720x576 in PAL.
> In NTSC it scales 704x480, 544x480, 480x480, 352x480 and 352x240 to
> 720x480.
> Other formats cannot be displayed as full-screen pictures by the card.
>
>  > 2) Is it possible to have multiple dvb cards on the same system to receive
>  >    multiple streams from the same satellite(freq), if the hardware does
>  >    not allow(as of now)?
>
> Yes, you can use multiple DVB cards.
> But you can also get multiple streams from one card. Just set the appropriate
> filters. Due to the bandwidth limitations of the data paths on the
> card (from hardware to ARM, from ARM to DPRAM, from DPRAM to PC
> memory, ...) you cannot select too many filters without problems however.
> If you want the complete transport stream from one transponder get a
> data-only card like the Technotrend-Budget or the WinTV-Nova.
>
> Ralph
>
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