why videomixer turn videos into black and white?

[Andrés González]

Hi,

When I execute this pipeline, it shows the video ok.

$ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
mpeg2dec ! autovideosink

But in this, the video is black and white:

$ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
mpeg2dec ! videomixer ! autovideosink

I've tried
$ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
mpeg2dec ! ffmpegcolorspace ! videomixer ! autovideosink

$ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
mpeg2dec ! videomixer ! ffmpegcolorspace ! autovideosink

$ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
mpeg2dec ! ffmpegcolorspace ! videomixer ! ffmpegcolorspace ! autovideosink

But all are black and white. What's happening? How can I get color video
with videomixer?

Regards,

Andrés



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[Sebastian Dröge-7]

On Mon, 2010-08-23 at 14:25 +0200, Andres Gonzalez wrote:

> Hi,
>
> When I execute this pipeline, it shows the video ok.
>
> $ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
> mpeg2dec ! autovideosink
>
> But in this, the video is black and white:
>
> $ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
> mpeg2dec ! videomixer ! autovideosink
>
> I've tried
> $ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
> mpeg2dec ! ffmpegcolorspace ! videomixer ! autovideosink
>
> $ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
> mpeg2dec ! videomixer ! ffmpegcolorspace ! autovideosink
>
> $ gst-launch-0.10 -v filesrc location=dreamtheater.mpg ! mpegdemux !
> mpeg2dec ! ffmpegcolorspace ! videomixer ! ffmpegcolorspace ! autovideosink
>
> But all are black and white. What's happening? How can I get color video
> with videomixer?

Which version of gst-plugins-good are you using? Please file a bug about
this at http://bugzilla.gnome.org against GStreamer if you're using
0.10.24 or something newer. videomixer is not meant to transform videos
into black/white :)

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[Andrés González]

On 23/08/10 14:45, Sebastian Dröge wrote:
> Which version of gst-plugins-good are you using? Please file a bug about
> this at http://bugzilla.gnome.org against GStreamer if you're using
> 0.10.24 or something newer. videomixer is not meant to transform videos
> into black/white :)
>    
>
Hi Sebastian,

  "$ gst-inspect videomixer" says:
...
Plugin Details:
...
Version 0.10.21
...

So.. here come the silly questions. I guess I should:
$ ./configure --prefix=/usr
$ make
$ make install

gst-plugins-good-0.10.24 from source code.

Is this  correct?
Should I "apt-get remove gstreamer0.10-plugins-good" previously?

TIA,
Andrés




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[Sebastian Dröge-7]

On Mon, 2010-08-23 at 15:12 +0200, Andres Gonzalez wrote:

> On 23/08/10 14:45, Sebastian Dröge wrote:
> > Which version of gst-plugins-good are you using? Please file a bug about
> > this at http://bugzilla.gnome.org against GStreamer if you're using
> > 0.10.24 or something newer. videomixer is not meant to transform videos
> > into black/white :)
> >    
> >
> Hi Sebastian,
>
>   "$ gst-inspect videomixer" says:
> ...
> Plugin Details:
> ...
> Version 0.10.21

Yes, there was a bug that caused something like this in some situations.
That's fixed since some release

> [...]
>
> Is this  correct?
> Should I "apt-get remove gstreamer0.10-plugins-good" previously?

Are you running Ubuntu? In that case you can get updated packages for
Lucid at
https://launchpad.net/~gstreamer-developers/+archive/ppa/+packages?field.name_filter=&field.status_filter=published&field.series_filter=lucid

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[Andrés González]

  On 23/08/10 15:18, Sebastian Dröge wrote:
> Are you running Ubuntu? In that case you can get updated packages for
> Lucid at
> https://launchpad.net/~gstreamer-developers/+archive/ppa/+packages?field.name_filter=&field.status_filter=published&field.series_filter=lucid
>

Yes, I'm running Ubuntu. Ok, I just visited the site, modified my
sources.list and updated my packages. But surprisingly, now gstreamer
cannot find "mpegdemux", even after installing  
gstreamer0.10-plugins-ugly   0.10.15.4-1~lucid1. Any idea?

Thanks for all the help,
Andrés

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