David McBride wrote:
> Thanks for the reply Michel. The card is an old 878 based card.
Rats!
> I am not a video or linux guru by any means, a newbie for the most
> part. What do you mean by software image reduction. Can you be more
> basic and detailed with your answer? Are you saying it is xawtv or
> some settings?
>
> Thanks again, David
>
I dont use xawtv except very naively to test a TV card after installation.
Software reduction means you grab the whole 704 by 576 (when PAL) pixels
for every frame, copying from the mmap-ed buffers to your own buffer.
Then you skip say 3 out of every 4 lines, and in the lines you keep,
skip 3 out of every 4 pixels. There are subtler methods but this one is
simple.
If you wish to use ready-made encoders I suggest mencoder
(www.playerhq.hu) or ffmpeg (ffmpeg.sourceforge.net). Both have options
to specify the zoom-down factor between the grabber and the image to be
encoded. I also know of transcode and nvrec, but havent used them.
HaND,
--
Michel Bardiaux
Peaktime Belgium S.A. Bd. du Souverain, 191 B-1160 Bruxelles
Tel : +32 2 790.29.41
