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Old 26 May 2016, 23:43   #1
no9
 
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Can't Virtual Dreams - Love demo to video

Hi

Dunno if it is a bug in UAE or just the effect of my incompetence while messing with settings but no matter what do I can't get good result for that demo when I render it to the file. If I play it in emulator 'live' everything is alright, but after rendering it looks like below. The problem, slowing down the music, occur in 2:50 and 4:50 time mark and of course is related to resolution switch.

[ Show youtube player ]

Any suggestion how to render it properly?


ps: Winuae 3.2.2 x64

Last edited by no9; 26 May 2016 at 23:51.
 
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Old 27 May 2016, 00:26   #2
UberFreak
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There are a few parts in this demo that switch to an NTSC screen-mode, one of them begins at 2:53.

I assume its a frame-rate related problem when rendering to video, the music is "played" at 50Hz but needs to be 60Hz, to match NTSC refresh rate.
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Old 27 May 2016, 01:45   #3
no9
 
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This makes sense, thanks.
I think tt also means that the NTSC effects in the rendered video are played at 50 fps also, so they slow down the whole demo. I was wondering if I could render the music separately and then replace the original one but in that case it won't work.
So this is mission impossible in UAE right now
 
Old 27 May 2016, 03:17   #4
UberFreak
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This demo is featured on the "Mind Candy 2" DVD and was captured properly there.
The DVD is freely available:

http://www.mindcandydvd.com/2/frames?p=download
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Old 27 May 2016, 08:43   #5
no9
 
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Right, but I have a different goal.
 
Old 27 May 2016, 08:46   #6
Toni Wilen
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If it changes refresh rate mid demo, there is no way to have "proper" single file video. Either it needs to be split or very ugly frame doubling or dropping is needed to match frame rates.

Common frame rate that is integer divisible by 50 and 60 would work too
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Old 27 May 2016, 09:48   #7
no9
 
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Is there a way to convince UAE to output such fps?
 
Old 27 May 2016, 10:57   #8
Toni Wilen
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What fps? You can force it to keep using any fps you want by setting manual FPS adj value in Display panel and ticking the enable checkbox.
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Old 27 May 2016, 14:58   #9
no9
 
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Well, actually any constant fps, regardless mode switch during execution.

I tried manual fps settings but it has no effect for the video rendering.
 
Old 28 May 2016, 12:00   #10
Foebane
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Quote:
Originally Posted by UberFreak View Post
This demo is featured on the "Mind Candy 2" DVD and was captured properly there.
The DVD is freely available:

http://www.mindcandydvd.com/2/frames?p=download
Strange, as on the MindCandy DVD, most of Love was captured from a real A1200, but the NTSC parts were recorded from WinUAE, according to the commentary.
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Old 31 May 2016, 09:07   #11
no9
 
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They have made a lot of editing while making the compilation.
 
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