Re: video support again: compressing video

[Stephane Delcroix <stephane delcroix org>]

yeah, add-in means plugin or extension.

starting with 0.4.0, one can write custom add-ins, and compressing using
mencoder should be easy to write.

regards

s

On Wed, 2007-09-19 at 10:17 +0200, Emanuele Olivetti wrote:
> Lorenzo Milesi wrote:
> > Emanuele Olivetti ha scritto:
> >> Would it be interesting to embed such a function in
> >> future f-spot releases? A basic implementation could be just
> >> calling an external program, provided the desired level
> >> of compression.
> >>   
> > Ciao
> > I am not a developer, but from what has been told before I guess this
> > won't be implemented into the main code. Many times Stephane said that
> > video support in F-Spot will be VERY basic, limited to importing and
> > tagging.
> >
> > There are more chances that it can be handled by an addin, that will
> > call external programs like you said. I believe there won't be problems
> > for this!
> 
> Ciao,
> 
> You're right about what Stephane said and I agree with him. But
> at least in my case (Canon Ixus 65) it is a nonsense to store videos
> in their original format (after a quick check I can confirm: 1Gb for
> less than 9 minutes at high quality). So to have them in f-spot I
> must compress.
> 
> Since I do believe that many other cameras have the same feature it
> seems quite mandatory to think about compression in case f-spot will
> handle small cameras' hi-quality videos.
> 
> What do you mean exactly by 'f-spot addin'? Is there a way to
> manage external program invocation from f-spot now?
> 
> Here is a one-liner I use (mplayer/mencoder+lame), for those of you
> interested
> in that:
> ---compress.sh---
> mencoder -channels 1 -srate 11025 -oac mp3lame -lameopts
> mode=3:abr:br=16 -ovc lavc -lavcopts
> vcodec=mpeg4:vhq:vbitrate=$1:vpass=1 -ffourcc DX50 -o $2.$1 $2
> -----------------
> The first argument is the video bit rate (usually 1000-5000
> for me, but depends on your settings) and the second  is the filename.
> So "./compress.sh 3000 MVI_2193.AVI" yields "MVI_2193.AVI.3000" (divx4)
> at ~1/6 of the original size.
> I'm not an expert in encoding so feel free to criticize/improve :)
> 
> Cheers,
> 
> Emanuele
> 
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