[whatwg] on codecs in a 'video' tag.

Henri Sivonen hsivonen at iki.fi
Mon Apr 2 13:51:24 PDT 2007

On Apr 2, 2007, at 23:33, Dave Singer wrote:

> You miss the point.  MPEG defines levels exactly so that bitstreams  
> can say "you need to be level X to be able to play this" and  
> players can implement "up to level X" and interoperability is well- 
> defined and assured.  Levels *improve* the interoperability, not  
> make it worse.  Without formal level definitions, you never know  
> for sure what you can 'get away with' in your encodings if you want  
> it to play on a set of devices.

The flipside is that even if you've got the latest and greatest Mac  
Pro, if the content oversteps QuickTime's profile support, the video  
won't play.

Henri Sivonen
hsivonen at iki.fi

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