[theora-dev] Re: [libdv-dev] DV format patent status

Ralph Giles giles at xiph.org
Tue Feb 10 15:57:17 PST 2004

On Tue, Feb 10, 2004 at 06:32:22PM -0500, Arc Riley wrote:

> With DV in Ogg, I don't think this is an issue.  Mainly because if such 
> a case existed for DV they'd go after the big guys.  The megacorps who 
> are selling videocameras by the millions to everyone under the sun.

Just like with GIF?

The interesting question is whether a public no-fee licence can be 
obtained. Otherwise the patent holders can change their mind later, 
even if they're not charging now.

> The reason for putting DV into Ogg is to make editing easier.  An app 
> could have a number of Ogg bitstreams and work with them on the Ogg 
> level very efficiently while not having to work with uncompressed data.  
> If you were to input from DV, you could (with such an app) do a bunch of 
> edits and export back to DV without transcoding.  That's a pretty cool 
> feature to strive towards.  It would also help tremendously to be able 
> to compress the audio layer of DV with Flac vs storing it uncompressed 
> (if my interpretations of the spec are accurate as far as how DV stores 
> audio).

Eh. Raw dv is probably easier for editing. because it's fixed bitrate. I 
agree mng+flac encapsulated in ogg makes a good mastering format though.

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