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Home Theater => Sources => HTPCs => Topic started by: jambam on Nov 19, 2014 at 03:09 PM

Title: Htpc refresh rate setting/CIH setup
Post by: jambam on Nov 19, 2014 at 03:09 PM

For a too long a time , I was having some occasional jerky motion in watching movies , when using the htpc ..particularly when using the projector .

Solution setup auto refresh rate change to equal the source like 23.975 hz for bluray and most movies . For me it was a setup string in madvr.  There is also an option for it  using Mpc-hc.   

Should be the same for flat panel display , just make sure your setting is supported by your video card and display . Otherwise it gets worse

Title: HTPC Set up for CIH ( Constant Image Height)
Post by: jambam on Mar 19, 2015 at 06:13 PM

Here is where an HTPC offers a solution versus an NMT or media player .. Unless of course you have an anomorphic lens setup ..

Just upgraded to a 120 inch 16:9 screen , but since a lot of movies are in 2.35:1 Aspect ratio , I masked my screen to display my screen for 2.35:1 movies ..

Anyway after using google for solutions , I decide to setup my HTPC to display a custom resolution so that all my video would display with CIH , with the screen set to a 2.35:1 ratio..

Basically it involves setting the desktop screen to a 1920 x 816 which is 2.35:1 versus the normal 1080p (1920 x1080 or 16:9) display using either your AMD catalyst or Nvidia setting

(http://i1083.photobucket.com/albums/j385/jambam_03/6E3BA5BB-58D4-4E5D-A093-F7450AACFCCA_zpsezdajqhj.jpg)
Desktop in cinema wide


(http://i1083.photobucket.com/albums/j385/jambam_03/42BA118B-882E-4468-8D77-6D26581EB0BC_zps2yibqllu.jpg)
A 16:9 video cropped on the sides maintaining constant height , the grey border is not obvious in the picture due to the camera's limited dynamic range

(http://i1083.photobucket.com/albums/j385/jambam_03/FD34BB63-D98A-4A16-BA7A-5B99F22B364E_zps898kzmwo.jpg)
A 2.35:1 movie will display using the full screen

Title: Re: Htpc refresh rate setting
Post by: comet on Mar 19, 2015 at 06:22 PM

Sir may pic kayo on how the masking is done? Interested din ako sa idea na ito

Title: Re: Htpc refresh rate setting
Post by: jambam on Mar 19, 2015 at 06:25 PM

Quote from: comet on Mar 19, 2015 at 06:22 PM

Sir may pic kayo on how the masking is done? Interested din ako sa idea na ito

I used felt black cloth and velcro strips to hold the cloth for masking ..  Pictures to follow , my phone went lo batt.

Title: Re: Htpc refresh rate setting
Post by: jambam on Mar 19, 2015 at 07:21 PM

Materials a roll of Black Felt Cloth and strips of velcro (fastening tape)(http://i1083.photobucket.com/albums/j385/jambam_03/FED3495A-1349-49E5-B920-400D8B056A43_zpsgtriqttc.jpg)



One end of the Black Felt with velcro Sewn in
(http://i1083.photobucket.com/albums/j385/jambam_03/C985B4E2-A1E7-4FCA-AB46-FA8214F69EF4_zpshnxmtcrn.jpg)



Mounted ... Sorry if this is not clear just PM for clarifications
(http://i1083.photobucket.com/albums/j385/jambam_03/4C86EC6D-6063-4799-9F65-8FDAD4E04F49_zpsyhg84uil.jpg)

Title: Re: Htpc refresh rate setting/CIH setup
Post by: jambam on Mar 20, 2015 at 10:12 PM

For those asking ... The screen size of  120" 16:9 after masking

                                                      displays 115" @ 2.35.1

                         While a 16:9 video is now cropped into a 90" with CIH setup

A big benefit is I have the picture height optimised to so that I would look straight rather than look up