[linux-dvb] Re: 4:2:2 ?

["[iso-8859-2] František Boček" <bocekf@iol.cz>]

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Hi,

I think you confuse two different things (one is MPEG decoder input format and second MPEG decoder output format used for the the video encoder which produces analogue TV out).

To answer the question, Siemens DVB card cannot decode MPEG-2 4:2:2 pictures, because the MPEG decoder is only MainProfile@Main Level.
On the other hand the tuner can receive the signal; and I am now working on a software that allows to capture these 4:2:2 streams and it will then be possible to play them using a software only MPEG player (supporting MPEG 4:2:2). Up to now I was able to capture one  second of an EBU broadcast and play it on my PC. But I guess there will be problem with the bitrate - currently the MPEG-2 - 4:2:2 bradcasts (on Eutelsat W3)  use  10 or 21 Mbits/s for a  single channel!

Regards,
Frantisek


----- Original Message ----- 
From: "Deti Fliegl" <fliegl@cs.tum.edu>
To: "Dave Chapman" <dave@dchapman.com>; <linux-dvb@linuxtv.org>
Sent: Thursday, January 25, 2001 2:54 PM
Subject: [linux-dvb] Re: 4:2:2 ?


> Dave Chapman wrote:
> > 
> > Is the Siemens card capable of receiving Mpeg 4:2:2 DVB broadcasts?
> 
> 9.4.1 PAL Mode Digital Video Output The digital output is in 4:2:2
> component format. The content of the video could be either pure video or
> the blended combination of video and OSD.
> 
> 9.4.2 NTSC Mode Digital Video Output
> The digital output includes video in either 4:4:4 or 4:2:2 component
> format, plus the aspect ratio VARIS code at the beginning of each video
> frame. The video output format is programmable by the user but defaults
> to 4:2:2. The content of the video could be either pure video or the
> blended
> combination of video and OSD.
> -- 
> Detlef Fliegl, LRR, Technische Universitaet Muenchen
> Phone: +49 89 289-25770, Fax +49-1805-05255556258, Room S3240
> 
> 
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