Tuukka Toivonen wrote:
On Fri, 19 Dec 2003, Trent Piepho wrote:
resolution do you have to capture in with a BT8x8 to ensure no hardware
down scaling is done?
With my BT878: 768x576. I live in PALland, I don't know about others.
No, that's wrong. For NTSC it is 754, for PAL it's 922. See page 26 in
the datasheet.
I don't care about the datasheet, I care what happens in reality. If I tell
xawtv or other V4L programs to capture in more than 768x576 all I get is a
768x576 picture with black borders. If I ask only 768x576 capture, the
black borders are gone but the actual image is still the same. And even
that is still much more than what a real TV would display.
I am still very puzzled by this whole thread. The end result of my
captures has to be square pixel, half of 704x576. I set my capture card
at 704x576 then scale down by a factor of 2 using simple software
decimation. If the correct setting were 768x576 there should be an
observable vertical stretching, no?
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Michel Bardiaux
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Tel : +32 2 790.29.41
