Posted by Max Haltermann on 12/13/06 04:28

"Jukka Aho" <jukka.aho@iki.fi> wrote in message
news:00Afh.372$gn4.1@reader1.news.saunalahti.fi...
> Max Haltermann wrote:
>
>> When I make a DVD from a Winfast2000H DTVcapture card
>> the playback from a stand alone DVD player to a 68cm 4:3 TV is about 20%
>> smaller than the TV's screen. [i.e., there
>> all black borders on all sides of the picture]
>
> How does the original captured signal look on a computer? Does it already
> have the black bars there? (Is the original signal in 12P16 format?) Yes.

Thanks for the pointer re aspect ratio terms.
As I wrote in my first posting, the transmitted signal of all local DTV
stations has 4:3 images embedded in a 16:9 transmission. Format 12P16

VideoRedo File info says 16:9 and image 720:576 (normal PAL format).

This makes sense for the DTV stations, as this way they provide both main
aspect ratios for the end user. The end user selects 4:3 or 16:9 on the set
top
box this, as I see it, sets the correct parameters for the DIGITAL TO ANALOG
DECODER.
In other words, the analog image in the right format and dimensions for
display on a TV screen is created outside the digital environment.

So the question still is: How can one get a full hight and full width 4:3
display from
the raw digital TV transmissions on to DVD or onto a TV screen, seeing there
is no D/A conversion or decoding involved?

Max.




> See here for an explanation of the formats and their names:
> <http://google.com/groups?selm=a96fma$kj6$1@news6.svr.pol.co.uk>
>
> --
> znark
>

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