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Old 06-02-09, 10:00 AM   #77
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Join Date: Dec 2008
Posts: 173
Default Re: VDPAU testing tool

Originally Posted by Quantumstate View Post
My 9300 has tested out at a miserable 33 fields/s for Advanced, when the fieldrate for 1080i is 59.94 Hz. I'm not being stubborn, these are the numbers. It appears that my card can not handle 1080i with Advanced deinterlacing, but it's not clear to me how this relates to Advanced 2X and Advanced 1X deinterlacing settings in MythTV.

It does appear that my 9300 can handle 1080i using Temporal, since it tests at 109 fields/s, but what does this mean WRT 2X and 1X?

And finally it appears my Quadro can handle Advanced for 1080i, at 90 fields/s.
Each interlaced frame is made of 2 fields, the top one (line 1, line 3 ..) and the bottom one (line 2, line 4 ..).
I don't use MythTV myself, but IIUC:
Advanced 2X means that MythTV will produce 1 frame for each field, so for an interlaced stream at 25fps, it will display 25x2=50 images/s.
Advanced 1X means that MythTV will produce one frame for each top (or bottom) field and ignore the second field, so for an interlaced stream at 25fps, it will display 25 images/s.
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