Re: [gentoo-user] ffmpeg and libav

[john <jdm@jdm.myzen.co.uk>]

On Thu, 17 May 2012 02:43:17 +0100
Stroller <stroller@stellar.eclipse.co.uk> wrote:

> 
> On 16 May 2012, at 23:29, john wrote:
> > ...
> > I have changed by use flag for ffmpeg to include theora. When i try
> > emerge I get the following
> > 
> > [blocks B      ] media-video/ffmpeg ("media-video/ffmpeg" is
> > blocking media-video/libav-0.8.2)
> > 
> > * Error: The above package list contains packages which cannot be
> > * installed at the same time on the same system.
> > 
> >  (media-video/ffmpeg-0.10.2::gentoo, ebuild scheduled for merge)
> >  pulled in by media-video/ffmpeg required by @selected
> > 
> >  (media-video/libav-0.8.2::gentoo, ebuild scheduled for merge)
> > pulled in by
> >> =media-video/libav-0.8.1[X,encode,-jpeg2k,-mp3,-sdl,-theora,-threads,-truetype,-vaapi,-vdpau,-x264]
> >  required by (virtual/ffmpeg-0.10.2-r1::gentoo, ebuild scheduled for
> >  merge)
> 
> In addition to Alan's answer, note here that the above output lists
> media-video/ffmpeg and also virtual/ffmpeg.
> 
> Unless you only installed ffmpeg for the first time recently then I'd
> guess you originally installed media-video/ffmpeg (and that's what
> you have in your world file).
> 
> If you were to install ffmpeg today you would install virtual/ffmpeg
> instead, which is provided by either media-video/ffmpeg or
> media-video/libav.
> 
> Best thing to do is to remove video/ffmpeg from world in favour of
> virtual/ffmpeg so that Portage can work things out for itself. 
> 
> Stroller.
> 
> 
Thanks for the advice. Have removed media-video/ffmpeg and emerge
virtual/ffmpeg which is allowing me to emerge virtual/ffmpeg and libav.

I suppose if I wanted to use media-video/ffmpeg and I could mask libav.

Thanks for your help. I see this is allowing you to choose
between libav and ffmpeg. The value of virtual packages. 


Regards


-- 
John D Maunder