POV-Ray : Newsgroups : povray.advanced-users : Speeding up media : Re: Speeding up media Server Time
1 Dec 2021 04:39:10 EST (-0500)
  Re: Speeding up media  
From: Thomas de Groot
Date: 9 Feb 2021 02:30:23
Message: <60223a0f@news.povray.org>
Op 08/02/2021 om 16:16 schreef Alain Martel:
> Le 2021-02-07 à 02:23, Thomas de Groot a écrit :
>> Op 07/02/2021 om 04:41 schreef Mike Horvath:
>>> On 2/5/2021 6:56 AM, Bald Eagle wrote:
>>>> it's likely not your media - but your media settings.
>>>>
>>>> try:
>>>>
>>>>
http://news.povray.org/povray.newusers/message/%3C59a9ec1c%40news.povray.org%3E/#%3C59a9ec1c%40news.povray.org%3E

>>>>
>>>>
>>>>
>>>
>>> I'm not sure how that applies to my case. I am not using emissive 
>>> media or the "samples" keyword.
>>>
>>
>> There is nothing really wrong with your code as far as I can tell and 
>> from own experience. From the outside (of the media) it is even rather 
>> fast due to the default intervals 1 and samples 1 (Yes! you /do/ use 
>> samples, even if you don't).
>>
>> However, depending on the location of the camera within or without the 
>> media, render times can be very different; you even may need to 
>> increase the samples value to avoid splotches, and that will decrease 
>> render time even more although not that much.
>>
>> Using media is time consuming. There is no alternative.
>>
> 
> The default for samples is 10.
> samples default to 1 when using sampling method 1 or 2.
> The default are, as of version 3.6 :
> 
> sampling_method 3
> intervals 1 //DO NOT increase !
> samples 10
> 
> Increasing intervals dramatically increase the rendering time without 
> giving any appreciable improvement.
> 
> samples 10 intervals 3 render slower than samples 50 intervals 1.

I don't know where in the wiki there was a line saying defaults being 
intervals 1 and samples 1,1. Of course, I cannot find that paragraph 
anymore (typical!); but you are right of course: default samples is 10.

-- 
Thomas


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