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| A Few questions, mainly Interlacing http://forums.linhes.org/viewtopic.php?f=2&t=1887 |
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| Author: | SSChicken [ Sat Jul 03, 2004 6:58 am ] |
| Post subject: | A Few questions, mainly Interlacing |
Ive seen a few questions about interlacing on the forums before, but not specificly addressing my problem. If there is, sorry but i missed it I guess, could i get a link to it? Ok, as for my question, or series of. I've got everything working how I want pretty much, and now for the Fine Tuning. I've got a 1.7Ghz P3 with a NVidia GeForce4 4200 TI. The TV Out, in my opinion, looks pretty decent. So does the RTJPEG encoding (which i do on a BT878 based chip, the Hauppage WinTVGo model190). The thing I'd like to fix is the Interlacing problems. It's set to de-interlace which is all fine and dandy for a progressive screen like my monitor, but i think since it was originally interlaced, if i could get it interlaced again when it's output to my TV it would be very nice. Then i dont believe it would be choppy when a scene moves hoizonyally. so finally for my questions: 1) Is It possible to re-interlace the image WHILE keeping the lines in line with the lines on the TV? (It seems like the TV-Out would need to overscan just like the broadcast sent it in) 2) IS there some other filter that would have the same effect? |
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| Author: | ceenvee703 [ Sat Jul 03, 2004 8:56 am ] |
| Post subject: | |
First thing, you'd have to use the new nvidia drivers (check the Linux->General forum for details).... they're the first ones that support interlaced modes. Second, you'll have to run 640x480 on your TV out... I believe that running at any higher resolution will scale the picture, and thus effectively destroy the interlaced fields. I don't think overscan will affect interlacing... it just takes the 640x480 image and zooms it larger or smaller to get a better fit on your TV screen. Just noticed one more thing about your setup... I'm not sure if RTJPEG preserves interlacing, or whether that WinTVGo grabs images as interlaced. I know the PVR-250 and -350 encode interlaced MPEG2 files. |
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