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Old 02-28-05, 09:41 AM   #14 (permalink)
PocketTV Team
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> "Techniques and tricks to make hi-quality low bitrate VGA-res MPEG's " -> Why? Betaplayer and xvid is better.

The purpose of this thread was only to discuss ways to make very high quality MPEG's.

In some cases, MPEG-1 can be prefered, not because it is more efficient, but because it does not involved using technologies with patent royalties.

> even 2h movies with 60 kbps he-aac with about 730-750kbps xvid 2pass looks really good.

I don't think Xvid looks good in VGA at less than 1 Mbps, but it's a question of what you consider good.

> 1.7Mbps is 112% more then 800kbps. Yours: "We know that you can gain about 30% in compression using MPEG-4 - not 50%, though" Give mpeg4 a chance.

Of course, you can invert the way to compute percentage, but when taking about the compression gain of MPEG-4 vs MPEG-1, it goes the other way: a gain of 50% means files are 50% smaller. That has always been the way people have rated the compression gain of MPEG-4 vs MPEG-1. The consensus of the experts is about 30% to 40%. That's true and it's not the point of this thread, but YOU want to change its subject, so fine...

> Yes. But still for what? why? 1Gb movie mpeg1 looks worse then 700Mb Xvid. More space and worse quality.

No, they would look about the same.

> And why in aximsite and x50 general discussions?
> I think it is for Mutimedia section. And sorry for my simple and poor english

Because this thread was specifically avout making VGA resolution MPEG's and the x50v is the only Axim device with a VGA display. But I agree, it should be moved to Multimedia, I have no problem with that.
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