On Wed, 2005-05-04 at 16:15 -0700, Bruce Markey wrote: > Daniel Kristjansson wrote: > The one anomaly was the TVout from a "GeForce4 MX 420" was correct > for all negative values and positive values up to 3%. At four > percent or higher, the fields were off by one scan line causing > doubled horizontal edges. This was not the case for TVout from > a 5200 or monitor output so I believe this was an anomaly of > that card/driver rather than a miscalculation. Hmmm, I'm using a GeForce 4 MX. I just added a fix for this that does overscan compensation when the overscan is greater than or equal to 5%. It does get one scan line off, but then never gets worse (like it did before). But if this is a GeForce 4 MX problem only then we should detect this and only do this compensation in this one case.
Do people generally use an overscan >= 5%? > Here is the output from a 1400x1050 monitor. 640x480 GUI with > fullscreen playback and vertical overscan at +6% . The values > appear to be correct including xv_dest_y_incr=2 to account for > the scaling. Sounds good. -- Daniel
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