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H.264 avc vs xvid, which is better?

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H.264 avc vs xvid, which is better?

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  1. Laura Thompson



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  2.  


    I will never understand why I still see people using XviD, commonly seen in .avi files. It's the old H.263 MPEG-4 part2 encoding and not nearly as good as H.264/AVC which is the newer (and far superior) MPEG-4 part10 codec, commonly seen in .mp4 and .mkv files.


     


    Note, for the most part .mp4 and .mkv are simply container formats and hold the exact same video/audio streams, but .mkv is more flexible, assuming your playback device supports it. Many people prefer .mp4 because more devices support it. There are many tools to easily convert from one format to the other without the need for recompressing; they simply repack the streams into the other container format.


    Sure XviD requires less horsepower, but if you use it simply because your computer can't handle AVC, then I think it's time to upgrade your computer!


    H.263 was designed with SD (Standard Definition) in mind, and it is not optimized for HD resolutions. I hate when I see 720p and 1080p movies created with XviD. The people creating these files are obsolete!


    I also hate when I see people use H.264/AVC, but then use the incorrect level settings for the source video. Many people use High@5.1 settings for example, simply because it's "the biggest number", when for example the video is 1280×720 at 24fps, and SHOULD be using High@3.1, which is tailored for that video rate. This is why you can sometimes find the same video at half the file size of another, but actually look better! I see too many people assume that larger file sizes means better quality, and that just isn't true. (See a chart for proper level settings at: http://en.wikipedia.org/wiki/H.264#Levels)


    Some may argue that XviD is still better for SD video, such as that found on DVDs, but they are still wrong. AVC High@3.0 is designed for this video rate, and is still far superior to XviD.


    Armed with a little know-how and research, you can create the best quality videos at the smallest file sizes, or when using others' creations, know WHO is actually creating the best versions.


    Please feel free to copy this post anywhere where others will see it, to help get others to understand better and use the best methods.


     

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