On Wed, 19 Jun 2002 21:21:50 +0800 "Kevin Liao" <kevinliao@xxxxxxxxxx> wrote: > I had ever applied your patch one month ago. But I saw very strange result > for my BT878A. For example, the original sequence of even field for NTSC in > one second was: > > 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 > 29 30 > > If I set btv->decimation to 10, 5 even fields should be dropped. Therefore > the ideal output sequence (25 fields) should look be: > > 1 2 3 4 5 7 8 9 10 11 13 14 15 16 17 19 20 21 22 23 25 26 27 28 29 > > Right? BUT, here comes the surprise! The real result I got for my BT878A > was: > > 1 2 3 4 3 7 8 9 10 9 13 14 15 16 15 19 20 21 22 21 25 26 27 28 27 > > That is, though the number of total even fields is still 25, 5 of them are > repeated! I got actually 20 even fields. The worst thing is that you guys > could image that what the above sequence looks like. And I had also tried > different values of btv->decimation but it just didn't work at all. So, > finally I give up the patch. > > Regards, > Kevin Quite interesting! I tested with PAL signal (25 fps), but was unable to "number" the image. I sometime get a "night club" effect :-), which might be the same thing as you. I think that's a software bug (in my code probably). Benoit.
