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Setting up Savant Control

D

demoleon

Member
We are re-entering all of our masking presets for KScape (4-way screen masking system hasn't worked since install. Finally had a Stewart technician on site and we think it is fixed. Fingers crossed!). All is going well except that when we play a 2.40 aspect ratio movie KScape sends 2.35 to the Savant. So KScape won't automatically mask to 2.40. All other ARs we entered seem to work OK. Not sure if we have a problem or if our player is set up wrong. It sees like KScape should just send the AR to the control system and let us decide what to do with it. Since the majority of movies are 2.40 I think we'll call that when 2.35 or 2.40 is indicated and then I can hit a preset for 2.35 when needed.

Also we noticed that when we set 4:3 AR for one movie another 4:3 movie would still have small vertical black bars. So 4:3 doesn't seem to be consisten across all old movies.
 
The protocol issues the closest aspect and then an additional trim value from that. Savant will need to use the trim values to determine actual aspect.
 
Hmm...OK I'll let my programmer know and we'll try it. With the amount of movies in 2.40 seems like that should be one of the values they send natively.
 
When you play 2.40 content and your player is in 16:9 mode, the SCREEN_MASK event will, indeed, report an image_ratio of '05' which translates to 2.35. But it should also include top and bottom trim values of "+xxx" to indicate that the masks should moved inward by "xxx" amount. It's a limitation of the SCREEN_MASK event as "2.35" is the largest ratio it can report.

However, if your player is in CinemaScape mode, then your control system should, instead, be queueing off of the CINEMASCAPE_MASK event which will report the frame_ratio for 2.40 content as "240". Full disclosure: for 2.20 and 1.85 content, CINEMASCAPE_MASK will report a frame_ratio of "237"
 
One thing to consider: assuming that you have a 1.78 screen that you’re masking top & bottom to achieve 2.35 or 2.40, if your screen were 12 feet wide, the difference in image height between 2.35 and 2.40 would be 1-1/4 inches total, or 5/8 inch top and bottom. It’s a very small difference. You could mask everything to 2.40 and you’d have a tiny bit of light spill onto the masks that should be eaten up by the velvet borders of the masking panels.
 
MikeKobb said:
One thing to consider: assuming that you have a 1.78 screen that you’re masking top & bottom to achieve 2.35 or 2.40, if your screen were 12 feet wide, the difference in image height between 2.35 and 2.40 would be 1-1/4 inches total, or 5/8 inch top and bottom. It’s a very small difference. You could mask everything to 2.40 and you’d have a tiny bit of light spill onto the masks that should be eaten up by the velvet borders of the masking panels.
Click to expand...
Yeah, we usually do that with an Envy videoprocessor - it has a setting to remove small bars. That´s just perfect for these minor differences.
 
I do have an Envy so I will try that this weekend. Read through the Envy NLS user guide and seems pretty straight forward. We are currently masking both 2.35 and 2.40 to 2.40 and then I have a preset button for 2.35 if I need it. But the Envy solution seems better. Thanks!
 
I wouldn´t use NLS for that. On the "Black Bars Configuration" screen, there´s an option called "Small Black Bar Reducton". Set this to 100% and it will automatically just cut of these small differences between 2.35<>2.40 or 1.78<>1.85.
 
DieZwei said:
Yeah, we usually do that with an Envy videoprocessor - it has a setting to remove small bars. That´s just perfect for these minor differences.
Click to expand...
DieZwei said:
I wouldn´t use NLS for that. On the "Black Bars Configuration" screen, there´s an option called "Small Black Bar Reducton". Set this to 100% and it will automatically just cut of these small differences between 2.35<>2.40 or 1.78<>1.85.
Click to expand...
I tried the overscan solution and didn't like it. I guess my masking borders are too perpendicular as the overscan was very visible and bugged me a lot. In thinking about the Envy solution I am a little confused. The envy doesn't know what my mask is set to so how can it detect small black bars? On my 16x9 screen wouldn't 2.35 and 2.40 have large black bars? It doesn't know I'm trying to play a 2.40 movie on a 2.35 masked screen. That's why I was thinking of using the custom zoom for 2.40 on the Envy. A very small zoom would remove the black bars. Unless there is a way to pass the masking to the Envy?
 
I saw you posted your question over in the AVSForum and already got an answer from the developer himself. :)
 
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