Re: [Motion-user] Uncompressed Video > Ogg Theora

[Andrew H. <ham...@mc...>]

Andrew Hamilton wrote:
> Chris Jenks wrote:
>   
>>    Hello,
>>
>>    Now that I got motion working under Fedora, I would like to store my 
>> video as Ogg Theora files rather than mpeg4 - a quick test found them to 
>> be about half as big at about the same quality. I realize there has been a 
>> long discussion about integrating Ogg format with motion, but I was 
>> wondering if there is an elegant way to convert the vidio files from 
>> motion into Ogg Thoera format after they are generated. I have already 
>> succeeded with:
>>
>> ffmpeg2theora -o test.ogg -v 7 01-20061127162956.avi
>>
>>    but I expect this would be more lossy than if I could generate the Ogg 
>> file from an uncompressed video format. Has anyone tackled this yet?
>>
>>    Yours,
>>
>>      Chris
>>     
> Hi Chris. At one point I made a patch for Motion that allowed for 
> lossless encoding using the 'ljpeg' format (lossless jpeg).  I don't 
> think it works with recent versions of ffmpeg though, for some reason.  
> If I get some time soon, I will try to get it to work again, but you are 
> more than welcome to give it a shot if you have programming experience. 
> Here is the link to the patch: 
> http://www.lavrsen.dk/twiki/bin/view/Motion/LosslessEncoding.
>
> Sincerely,
> Andrew Hamilton
>
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>   
Well, I had some time to tweak it this evening, and I got it working 
using the FFMPEG lossless video codec. All the other lossless codecs I 
tried didn't work for one reason or another.  You should note that the 
FFMPEG docs say that this codec is experimental and may change without 
notice, so that should tell you something.  I will upload the new patch 
to the wiki.

Sincerely,
Andrew Hamilton