where to De-interlace and scale?
Posted by: Geoff P on 11 November 2006
The arrival of the latest TI DLP chip has allowed reasonable price projectors with 1080p scaling.
THis prompted me to get an INFOCUS IN76 which does an excellent job. The questions I am wrestling with right now are:
1) Currently I have a Denon 2900 DVD with component out, interlaced or progressive by choice. Where is it best to de-interlace. The DVD player or in the projector?
2) I am tempted to invest in the new Denon 3930 partly because it is quoted as having a classy 1080p upscaler in it. I wonder if that is likely to beat the upscaling offered in the IN76 which seems to have a pretty good upscaler already. Anyone have any experience on this.
regards
Geoff
THis prompted me to get an INFOCUS IN76 which does an excellent job. The questions I am wrestling with right now are:
1) Currently I have a Denon 2900 DVD with component out, interlaced or progressive by choice. Where is it best to de-interlace. The DVD player or in the projector?
2) I am tempted to invest in the new Denon 3930 partly because it is quoted as having a classy 1080p upscaler in it. I wonder if that is likely to beat the upscaling offered in the IN76 which seems to have a pretty good upscaler already. Anyone have any experience on this.
regards
Geoff
I'd try feeding interlaced to the projector, then switching to progressive scan.
My bet is that the latter will look better as you're reducing the work done by the projector's scaler.... after all, the de-interlacing circuit in your player is pretty good.
However, you will NOT see 1080P.
From their own webpage: IN76 Specs
The projector can only show you 720 lines - it can scale 576I, 576P, 1080I or 1080P to its' 720 resolution... but there seems little point upscaling to 1080P in a player only to have the projector downscale the image again.
Ultimately you need to try it and trust your own perception of the results.
My bet is that the latter will look better as you're reducing the work done by the projector's scaler.... after all, the de-interlacing circuit in your player is pretty good.
However, you will NOT see 1080P.
From their own webpage: IN76 Specs
quote:720p High Definition Resolution
Native 1280 x 720, 16:9 widescreen resolution creates high-definition reality from any HD source. With the InFocus Play Big IN76’s 720p DarkChip2™ DLP® technology from Texas Instruments®, movies have never looked better and gaming becomes more realistic than ever.
The projector can only show you 720 lines - it can scale 576I, 576P, 1080I or 1080P to its' 720 resolution... but there seems little point upscaling to 1080P in a player only to have the projector downscale the image again.
Ultimately you need to try it and trust your own perception of the results.