RFC: Xv field order

[Jacques, Hugo]

Krzysztof Halasa <khc at pm.waw.pl> writes:

> I'm at a point with all needed hardware info to implement interlaced
> mode (mainly for perfect Xvideo playback) in intel driver. Now there is
> another question: how should an Xv client interface with it? Do we have
> any interlaced field-aware Xv interface?
> 

What video encoder are you planning to use for the TV out? 

I am using a Chrontel 7022 on a SDVO/ADD2 card driven by a 945G chipset to output on a composite coax cable.  When sending it 720x480 frames (I work in NTSC) I keep getting scaling artifacts (that are not caused by XV texturing this time:).  If I could get rid of that scaling artifact, I think that I could send it the 720x480 frames consisting of the two weaved fields and get a decent interlaced video quality (although timing from frame to frame might still be an issue)

Hugo Jacques
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