[FFmpeg-user] theora question

[Tom Sparks]

--- On Wed, 25/4/12, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> From: Carl Eugen Hoyos <cehoyos at ag.or.at>
> Subject: Re: [FFmpeg-user] theora question
> To: ffmpeg-user at ffmpeg.org
> Received: Wednesday, 25 April, 2012, 3:50 PM
> Rick C. <rickcorteza <at>
> gmail.com> writes:
> 
> > On Apr 24, 2012, at 2:08 PM, Tom Sparks wrote:
> > 
> > > use the true ffmpeg2theora transcoder
> 
> > Actually I made a quick trial using this
> > and I didn't see a significant difference in speed? 
> 
> Not very surprising given that ffmpeg2theora is using
> libtheora 
> and FFmpeg.
> 
> > The same example I used previously which was getting
> > only 40fps was about the same with ffmpeg2theora. 
> 
> > Quality was a bit better though. 
> 
> That is indeed surprising.
not really ffmpeg2theora only output is theora/vorbis

> 
> > In general does theora just not take advantage of
> multithreading?
"
the gain with 2 cores is usually small (about 10% to 20%) due to
datapath dependencies of the implementation.
" - http://lists.xiph.org/pipermail/theora/2011-January/004253.html
> 
> Are you sure theora is the right choice for encoding?
> There should be better and faster codecs for every use
> case.
> 
> Carl Eugen
> 
tom sparks
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