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Author Topic: Amiga Animation and CHIP RAM versus FAST RAM  (Read 21103 times)

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Offline Homer

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #104 from previous page: April 15, 2008, 09:51:25 PM »
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WOW- I'm sorry for doubting the Ability of the Amiga- but again all I have is what I saw as a computer salesman and tons of magazines with software reviews never mentioning doing more than 30fps. Understand I'm in the states, so we had the 60hz monitors for 60fps.


I'm no supertec, but I thought US was 29 fps with NTSC (Mains supply frequency 60Hz) and UK is 25 fps with PAL (Mains supply frequency 50Hz). Am I missing the point here  :-?

I must admit, I thought this thread was flamebait from the start, but please prove me wrong  :-D
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Offline bloodline

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #105 on: April 15, 2008, 09:56:33 PM »
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Homer wrote:
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WOW- I'm sorry for doubting the Ability of the Amiga- but again all I have is what I saw as a computer salesman and tons of magazines with software reviews never mentioning doing more than 30fps. Understand I'm in the states, so we had the 60hz monitors for 60fps.


I'm no supertec, but I thought US was 29 fps with NTSC (Mains supply frequency 60Hz) and UK is 25 fps with PAL (Mains supply frequency 50Hz). Am I missing the point here  :-?


In the UK, TV signals images are transmitted at 25frames per second... but each frame is split into two fields (Odd and Even lines), which need to be transmitted at twice that rate in order for the complete image to be shown at the correct rate :-)

(Each field is displayed for 1/50th of a second.)

Quote

I must admit, I thought this thread was flamebait from the start, but please prove me wrong  :-D


I was, but no one took the bait :-D

Offline shoggoth

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #106 on: April 15, 2008, 10:19:33 PM »
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Rowbeartoe wrote:
Because I'm a skeptic, and must be convinced. Some people are just so biased, that they will say it can.  I know you understand that.  I was hoping to hear someone say, for example, that old ANIM players were limited to 30fps then improved.  


If you're so desperate for proof, why not get an Amiga to try it out for yourself? It won't matter what anyone says here, because that won't be proof enough anyway. If someone replies "Yes, the Amiga can do 60FPS" that could just as well be bias to you. So why ask?

No offence dude, but you deliver a fair amount of bias in your own posts. And that's an understatement. Being a skeptic is one thing. Asking a question and not accepting the answer because you didn't like it is another. At some point it gets silly and annoying.

I'm mainly an Atari user, with an interest in the Amiga scene. Even though I have a preference for Atari machines, I recognize that the Amiga 500 always beat the ST when it came to animation and graphics. You most likely tried an old animation player which was limited to 30FPS, or watching an animation in an interlaced screen mode (in which case 60FPS isn't applicable due to obvious reasons). Later ones didn't have that limitation.
 

Offline amigaksi

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #107 on: April 16, 2008, 08:35:05 PM »
>...The reason- well the picture has 33 colors on a scan line with the color black between each one. That will give Ham-6 hell...

I would need the original image that you believe will give HAM-6 hell.  JPG will distort the image.  Halfbrite mode can do 33 unique colors easily and the copper can change 32 color registers in a scanline without involving the processor.

>I have a hard time just accepting people saying it could. But I'll just take the word of everyone here. The Amiga could, the software demos just sucked at achieving 60fps, and move on. ..

>http://home.comcast.net/~erniew/juggler.html

If that's one of the animations (juggler) then you can calculate yourself the frame rate given the speed of full frame updates vs the percentage of changes in the picture (in this case appears to be less than 1/3).  Do you have a more complex animation where more things change?  I remember Amiga had a demo of cat walking and spinning.  The jolt can demo has the same issues of less than 1/3 of the screen updating.
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Offline RowbeartoeTopic starter

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #108 on: April 17, 2008, 03:31:26 AM »
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amigaksi wrote: >...The reason- well the picture has 33 colors on a scan line with the color black between each one. That will give Ham-6 hell... I would need the original image that you believe will give HAM-6 hell. JPG will distort the image. Halfbrite mode can do 33 unique colors easily and the copper can change 32 color registers in a scanline without involving the processor. >I have a hard time just accepting people saying it could. But I'll just take the word of everyone here. The Amiga could, the software demos just sucked at achieving 60fps, and move on. .. >http://home.comcast.net/~erniew/juggler.html If that's one of the animations (juggler) then you can calculate yourself the frame rate given the speed of full frame updates vs the percentage of changes in the picture (in this case appears to be less than 1/3). Do you have a more complex animation where more things change? I remember Amiga had a demo of cat walking and spinning. The jolt can demo has the same issues of less than 1/3 of the screen updating.


Sure, i know it's off topic, but i can give  u several spectrum 512 pictures in bmp or png format.  how u  want them?
 

Offline amigaksi

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #109 on: April 17, 2008, 05:28:08 AM »
BMP would be good since I have programs that can read and convert it other formats.  Email just the one you claim is the worst one for Amiga to display: krishna@krishnasoft.com.

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Offline bloodline

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #110 on: April 17, 2008, 11:45:40 AM »
Since I was curious to see what a 640*480 30 second mpg would look like at 320*240 in HAM-6, I decided to convert one... it took quite a while, but here is the results.

If you have enough ram in your Amiga you can try this out (you'll need at least 20 meg fastram).

Although Delta encoded, it doesn't help as pretty much every pixel changes every frame...

Load it into DPaintIV and it will run at 60fps.

http://www.troubled-mind.com/vulcan.anim

Offline amigaksi

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #111 on: April 18, 2008, 03:40:03 AM »
>Although Delta encoded, it doesn't help as pretty much every pixel changes every frame...

>Load it into DPaintIV and it will run at 60fps.

What's your Amiga spec?  68030-25Mhz?
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Offline bloodline

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #112 on: April 18, 2008, 07:40:26 AM »
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amigaksi wrote:
>Although Delta encoded, it doesn't help as pretty much every pixel changes every frame...

>Load it into DPaintIV and it will run at 60fps.

What's your Amiga spec?  68030-25Mhz?


Actually I currently have my 50mhz 030 Blizzard  installed.

Offline bloodline

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Re: Amiga Animation and CHIP RAM versus FAST RAM
« Reply #113 on: April 18, 2008, 04:19:39 PM »
Ok here is a more A500 friendly Anim, with only 30 frames... it should be more usable for an A500...

http://www.troubled-mind.com/5002.anim

And before any of you ask... no, you can't see the rest of the video... it's certainly not suitable for a family site :-D

-Edit-

Ok another little clip... :-D

http://www.troubled-mind.com/5001.anim

I only wish you could see the rest of it... oh wow  :-o