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Author Topic: Htpc refresh rate setting/CIH setup  (Read 1923 times)

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Offline jambam

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Htpc refresh rate setting/CIH setup
« 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
« Last Edit: Mar 20, 2015 at 10:00 PM by jambam »
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Offline jambam

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HTPC Set up for CIH ( Constant Image Height)
« Reply #1 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


Desktop in cinema wide



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


A 2.35:1 movie will display using the full screen
« Last Edit: Mar 20, 2015 at 10:20 PM by jambam »
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Offline comet

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Re: Htpc refresh rate setting
« Reply #2 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
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Offline jambam

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Re: Htpc refresh rate setting
« Reply #3 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.
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Offline jambam

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Re: Htpc refresh rate setting
« Reply #4 on: Mar 19, 2015 at 07:21 PM »
Materials a roll of Black Felt Cloth and strips of velcro (fastening tape)



One end of the Black Felt with velcro Sewn in




Mounted ... Sorry if this is not clear just PM for clarifications
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Offline jambam

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Re: Htpc refresh rate setting/CIH setup
« Reply #5 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
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