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themarques Posts: > 500

Hi guys, I am looking for someone that is good at sharpening up videos, I have a 3GP video that is a bit blocky and would like to know what you can do to sharpen it up, I am not really good with video filters and stuff so anyone that can, drop me a pm will appreciate it.
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Posted: 2007-07-24 02:30:17
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max_wedge Posts: > 500

you can't sharpen up 3GP video. The blockiness is due to the H263 video codec used in 3GP.

There is no practical way to sharpen this video - what you see is what you get. Just like a highly pixelated jpg image there is nothing you can do to improve the picture quality. Sharpening will just make the blockiness worse. Blurring then sharpening will lose so much image detail it will be virtually unrecognisable.
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Posted: 2007-07-25 03:48:48
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themarques Posts: > 500

Mmm thats not good at all, but thank you for that information much appreciated.
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Posted: 2007-07-25 04:00:04
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max_wedge Posts: > 500

On 2007-07-25 04:00:04, themarques wrote:
Mmm thats not good at all, but thank you for that information much appreciated.

no worries, sorry I couldn't offer much hope. It may not be as bad as I say, I've never tried myself, but just knowing the low quality of 3gp video I expect it would be difficult (aka impossible) to clean up.

I'm pretty certain the blockiness you are talking about occurs when there is lots of movement in the viewfinder, the image compression jumps right up to keep up with changes in the viewfinder (a feature of the codec). If you can hack the camera driver of your phone, you could reduce the framerate which would probably result in less compression (and less blockiness). You can also specify video compression in the camera driver.

If the blockiness you are talking about is just from zooming in on the scene, then this can be softened then resharpened which sometimes helps a little. and sometimes makes it worse
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Posted: 2007-07-25 15:16:10
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below24 Posts: > 500

Im guessing this is a video that you have taken with your mobile? not something that you are encoding...
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Posted: 2007-07-26 14:03:11
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themarques Posts: > 500

Yeah its a video I took a while back with my Z1010 and need it a bit sharper.
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Posted: 2007-07-26 17:26:47
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