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Author Topic: Good Reason To Quit Fractals!  (Read 8011 times)
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David Makin
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« Reply #15 on: January 21, 2007, 02:59:54 PM »

I haven't tried it yet but a video codec maybe worth checking out is:

http://sourceforge.net/projects/dirac

Apparently it's a research codec being developed by the BBC.
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lycium
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« Reply #16 on: January 21, 2007, 03:29:25 PM »

that's the wavelet codec to which i was referring smiley there have been others before it too, like the ones by charles bloom: http://www.cbloom.com/src/index_im.html

edit: btw, i suspect that bink (http://www.radgametools.com/bnkmain.htm) may be based on such an approach as bloom describes.
« Last Edit: January 21, 2007, 03:37:35 PM by lycium » Logged

lycium
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« Reply #17 on: January 21, 2007, 04:07:54 PM »

i just finished encoding a julia animation using some new codecs:

* lagarith, similar to huffyuv in that it predicts the image mean and encodes the differences but using more modern (patented?) compression algorithms
* x264, an opensource implementation of the popular mpeg4 avc spec

first things first: lagarith outperformed huffyuv very impressively, producing a 25mb file compared to huffyuv's 37mb! the encoding was also noticably faster, this is because although lagarith is much slower (in terms of cpu cycles per byte) it ends up writing a lot less data; it's quite a stable codec and supports both 64bit and multithreading, which makes me very happy of course smiley

x264, a lossy codec, managed to compress this video to just under 2mb! that's really really impressive, and the while the encoding time was pretty long (and didn't multithread properly) the results are definitely worth it.

here's the x264 encoded video: http://www.fractographer.com/wip/julia_x264.avi

you can go here to get x264: http://x264.nl or google for ffdshow (which is highly recommended anyway!), ditto for lagarith.
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« Reply #18 on: January 22, 2007, 02:33:01 PM »

Thomas Ludwig (lycium) wrote:
>
>   another apocryphal (american) quote:  "all the speed in the world
>   won't help if you're headed the wrong way!"

There are some theorists that say the universe is circular, so even if one does head in the wrong direction, you'll eventually get where you need to, or end up back where you started.     wink  cheesy   grin


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lycium
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« Reply #19 on: January 22, 2007, 03:16:19 PM »

Thomas Ludwig (lycium) wrote:
>
>   another apocryphal (american) quote:  "all the speed in the world
>   won't help if you're headed the wrong way!"

There are some theorists that say the universe is circular, so even if one does head in the wrong direction, you'll eventually get where you need to, or end up back where you started.     wink  cheesy   grin

well if it comes to that, we should bear in mind that the fastest we can ever go is the speed of light; even at a mere 13.7 billion lightyears (only what we can see, not what's "out there") i think the universe will have long expanded into a 0K void before we can hope to reach our original position through any kind of cyclic behaviour wink
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lycium
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« Reply #20 on: January 22, 2007, 03:27:36 PM »

we should bear in mind that the fastest we can ever go is the speed of light

i forgot to mention that lightspeed travel can be uncomfortable: even though i'm really skinny, in reducing my mass to exactly 0 some drastic compromises have to be made wink
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lycium
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« Reply #21 on: January 24, 2007, 02:10:43 AM »

another x264 test video: http://www.fractographer.com/wip/julia2_x264.avi

i notice that white is not being preserved during playback, it doesn't look so great sad will have to look into this; at least the crispness is maintained.
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ericbigas
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« Reply #22 on: January 25, 2007, 12:44:54 AM »

Lycium, you sure you want to be putting x264 into AVIs?  I mostly see people using MP4 for this.  I've read that x264-in-AVI is a hack which doesn't comply with the official specs for AVI or H.264, and it's not widely supported by video player apps.  I can't play your Julia animations with QuickTime, for example, though they play in VLC.
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lycium
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« Reply #23 on: January 25, 2007, 01:53:19 AM »

hmm i really like virtualdub though, it does exactly what i need Sceptical do you know of any simple editors like vdub that can spit matroska (or whatever the hot fashion is)? i save a series of bmp frames, and i guess my win32 vfw saving code won't be of any help...
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ericbigas
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« Reply #24 on: January 25, 2007, 02:45:24 AM »

I think VirtualDubMod can do Matroska.

Nice chart here comparing the containers:  http://en.wikipedia.org/wiki/Comparison_of_container_formats
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Sockratease
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« Reply #25 on: January 27, 2007, 03:28:03 PM »

Well...

Look what I started!

Yup.

I crashed my computer and had a hard time getting it all working again, but I got an external hard drive and cleaned out everything.

Time to read all the reference links in here and study up!

No more 800 MB avi files that run a mere 1,000 frames for me!
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Euph0ria
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« Reply #26 on: February 22, 2007, 01:30:38 PM »

On the topic (off topic) of archiving your renders or any data for that matter, it's a very very good idea to look into adding parity archive redundancy data to each disk.  Adding 2-5% PAR2 data makes your data SO much more reliable as it will allow you to recover from any minor damage, like a scratch or whatever, anywhere on the disk.  2-5% redundant data is usually enough to cover a good deal of damage, but you can always add more. 
Take a look at www.quickpar.com and read up on the benifits of par2. 
Also, it's best to place the PAR2 data at the END (the outer edge) of the CD.  This can be done with Nero by selecting the properties of the PAR2 file(s) and setting their priority to high.  Happy burning!
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« Reply #27 on: February 22, 2007, 10:31:30 PM »

Tim M. (Euph0ria) wrote:
>
>    On the topic (off topic) of archiving your renders or any data for that matter....
>    Take a look at www.quickpar.com and read up on the benifits of par2.

Greetings, Tim.    And thanks for the above tip.   smiley

Nice to see another long time user of FractInt in the group.  Enjoyed the "Fractal Heart of Chaos" image and would have loved seeing that in the 30x20 poster you had made.

Anyway...    Welcome to this Forum!!    smiley
 
« Last Edit: April 04, 2010, 08:10:31 PM by Nahee_Enterprises » Logged

ramblerette
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« Reply #28 on: May 06, 2008, 10:30:11 PM »

i find sound advice in this  colored forum.thanks 
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« Reply #29 on: May 22, 2008, 05:02:30 AM »

try the microsoft media encoder

its what i use to convert AVI to WMV (which is like MPEG4) for posting on my site

file size = file size * 0.10

and very good quality, not much loss in resolution

also, its free!

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