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Video performance : THE SOLUTION !

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By Millenius, Junior Member on 15th November 2008, 12:07 AM
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It's not the ULTIMATE solution, but it's the only solution i found to watch videos perfectly in my Touch HD.

Video : HD trailer 800x480 @ 25 fps : Ice Age 2
Software : CorePlayer 1.2.5
First benchmark = 87%

First step :
Re-encoding the video in 240x400 on your PC with http://www.pocketdivxencoder.net/ or http://www.virtualdub.org/
Why 240x400 ?
- the video is pre-rotated (instead of 400x240) (performance +5%)
- the resolution is exactly the half of the native resolution (480x800) (performance +60%)

Second step :
Customize the options of Coreplayer :
Menu / Tools / Colors = Native
Menu / Tools / Preferences / Video / Video output = Raw FrameBuffer
Menu / Tools / Preferences / Video / Smooth zoom = OFF
Menu / Tools / Preferences / Video / Dither = OFF (uncheck)
Menu / Tools / Preferences / Advanced / Slow video memory = check

Results (the quality of theses videos seem egal)
Quote:

800x480 : 87%
800x480 (with the options) : 95%
240x400 : 141%
240x400 (with the options) : 232%

Enjoy

Sources :
http://www.newshq.fr/touchhd/Ice%20A...%20480x800.avi
http://www.newshq.fr/touchhd/Ice%20A...%20240x400.avi
Last edited by Millenius; 15th November 2008 at 11:24 AM.
 
 
15th November 2008, 12:15 AM |#2  
eaglesteve's Avatar
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Any visible degradation on picture charity and details?

Would be good if you post both clips for all to see for themselves.

Beautiful work. Thanks.

Quote:
Originally Posted by Millenius

HD trailer 800x480 @ 25 fps with CorePlayer 1.2.5

Benchmark = 87%

First step :
Re-encoding the video in 240x400 = 141%
Why 240x400 ?
- the video is pre-rotated (instead of 400x240)
- the resolution is exactly the half of the native resolution (480x800)

Second step :
Customize the options of Coreplayer :
Menu / Tools / Colors = Native
Menu / Tools / Preferences / Video / Video output = Raw FrameBuffer
Menu / Tools / Preferences / Video / Smooth zoom = OFF
Menu / Tools / Preferences / Video / Dither = OFF (uncheck)
Menu / Tools / Preferences / Advanced / Slow video memory = check

Result = 232.56 % !

Enjoy

15th November 2008, 12:20 AM |#3  
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no, the quality seems the same
because the DPI screen is very high (800x480 for 3''8)
15th November 2008, 12:31 AM |#4  
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Sorry are you saying we have to re-encode a hi res video ourselves (on a pc) to half the resolution (step 1) or does the player do it automatically?
15th November 2008, 12:33 AM |#5  
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I upload the trailer "Ice Age 2 HD" on rapidshare (ready in 15min) :
800x480 3Mbits : 26 Mo
240x400 3Mbits : 13 Mo
15th November 2008, 12:35 AM |#6  
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Quote:
Originally Posted by tboy2000

Sorry are you saying we have to re-encode a hi res video ourselves (on a pc) to half the resolution (step 1) or does the player do it automatically?

Re-encode on your PC !!
With PocketDivxEncoder for example Very easy to use !
15th November 2008, 12:42 AM |#7  
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OK, the upload on Rapidshare is done :
http://rapidshare.com/files/16386623...ch_HD.zip.html

You have 2 files : the original, and the optimized 240x400
BUT YOU NEED TO change the options on CorePlayer (see the 1st post of this topic) to see the result.

Default options :
800x480 : 87%
240x400 : 141%

With the optimized options :
800x480 : 95%
240x400 : 232% !!!
15th November 2008, 12:53 AM |#8  
eaglesteve's Avatar
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Good post. I think our moderator should sticky this.
15th November 2008, 01:04 AM |#9  
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Well I got to that solution a week ago, when I got my Touch HD.
But the Coreplayer options, I didn't knew.

Simpy using pocketdivxencoder is enough for me.

But thanks!

Cheers.
15th November 2008, 01:10 AM |#10  
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Nice solution...

The only problem many of us expecting the Touch HD to have good video performance without the hassles of re-encoding videos.
15th November 2008, 01:23 AM |#11  
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You can't really expect the phone to resize every frame of a massive video eg 800 x 480 or whatever on the fly. If you want better results, of course you have to re-encode yourself to a more suitable size. Otherwise it's just wasting CPU usage and you'll definitely get slow downs.

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