Hi,
On 02-Jun-01 Jonathan Paisley wrote:
> On 1 Jun 2001, Gerd Knorr wrote:
>
>> > Last but not least, what about this f*cking interlace distortions when
>> > there is movement inside the picture, could this also be kind of
>> > optimised when an optimal videomode is used ?
>>
>> Using Xvideo with hw scale fixes it, the v4l module uses one field only
>> and lets the video card scale this up. Works with matrox only right
>> now, but xfree86 4.1 should add a few more cards.
>
> Is it possible to use both fields in sequence in this manner? If so,
> would you then get a jumpy picture?
Yes. Unfortunately you would end up with the interlace ´devil´. There´s
really no good solution to the problem of showing an interlaced image on a
non-interlaced viewer. Either you pick only half the frames (which, for
viewing purposes is usually adequate), or end up with jagged edges with fast
moving objects. Trying to compensate for these edges would require extra
silicon on the chips -> expensive!
NB: does anyone have pointers on the techniques used for this de-jagging?
- Nemosoft
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