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What’s the best video codes between WMV9,DivX and XviD?

Do you wang to know?OK,I’ll tell you.
Let’s see the details about them firstly.

XviD codec produces industry-leading compact high quality MPEG-4 video. Its quality and efficiency has made it one of the most popular video codecs online. The XviD codec is developed and maintained by a handful of skilled and interested engineers from all over the world. Playback of XviD movies is usually supported in new DVD players nowadays. This codec makes it possible to compress a full-length DVD-quality movie enough to fit on a single CD, while still maintaining high image quality. The video is usually combined with MP3 or AC3 audio.
Microsoft Windows Media Video 9

Microsoft's video codec makes vast improvements over that from series 8, and more importantly, the decode stream parameters are now fixed ?future iterations of Windows Media Video will make improvements in the encoder, but those will be able to play back on devices that are WMV9 compatible. This has enabled them to find support in several new and a great many upcoming DVD players, digital media adapters, and portable video players

The codec from DivX, Inc is popular online, and has even found its way into several consumer electronics devices. DivX ;-) 3.11 alpha refers to a hacked version of the Microsoft MPEG-4 Version 3 video codec, extracted around 1998 by French hacker Jerome Rota (also known as Gej). In early 2000, Rota created a company to improve the codec development. Free versions of DivX Pro before 5.2 typically contained spyware. From 5.2 onwards, including version 6.4, no spyware was included, but Pro version (with DivX encoder) is only available in the form of a paid release
We can compar many examples using WMV9, Xvid and DivX codecs, and came to a conclusion that video created with XviD codec has the best quality.Of course, quality isn't the only factor when it comes to personal video encoding.If you need,you can use some tools(such as ImTOO MPEG Encoder) to convent between mepg wmv and divx or any other formats.
Generally speaking, The best codecs are XviD and Windows Media Video 9 -- it all depends on your priorities. If you're going to stick to computers as playback devices, the faster speed and excellent image quality of XviD is welcome. If you want to play your stuff on the PDAs, portable video players, and DVD players, WMV9 has broader industry support and is worth the extra encoding time. Both codecs delivered quite impressive image quality.
That’s all.Have you got the idea?
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