[gst-devel] video/x-raw-yuv, format=(fourcc)HDYC

[Julien Isorce]

2008/9/9 Edward Hervey <bilboed at gmail.com>

>
> > Any plan to support HDYC format in gstreamer ?
>
>    If you have elements that support that format... you can already do
> it now. After all, it's just a matter of creating a caps (like
> "video/x-raw-yuv,format=(fourcc)HDYC").
>

>   The *real* problem is having elements that can convert (properly)
> from that colourspace/layout to other ones (like the ones used by video
> sinks or encoders).
>
>   I don't know if anybody's planning that, but that wouldn't be the
> only issue with colourspaces in GStreamer (Anyone heard of chroma
> placement in subsampled video ?).
>
>   It all comes down to having:
>   * A proper definition of colourspaces in raw video caps
>   * An element that *properly* does that conversion taking into account
> the correct conversion coefficients/clamping and chroma placement. Oh,
> and preferably with readable code (unlike ffmpegcolorspace).


Ok. I have some basic knowledges but I think I have not the background to
make a such gst element (colorspace converter).
It requires to know a lot of video formats in order to start good
abstractions. And use appropriate libraries (liboil ?)
For now I can start to add the HDYC to RGB convertion in the ffmegcolorspace
element. (just to not forget this format ...)

Is there any thing about HDYC in the ffmpeg libs ?


>
>
>     Patches welcome :)
>
>       Edward


Thx

Julien


>
>
>
> >
> > (We have a Video Capture Device that delivers HDYC 1920*1080 only)
> >
> > Some docs here:  http://www.fourcc.org/yuv.php#HDYC
> >
> > It seems that the difference bettween UYVY and HDYC is just the
> > coefficients used in the yuv to rgb conversion.
> > T470 coefficients in UYVY to rgb conversion (SD likes) and
> > BT709 coefficients in HDYC to rgb conversion (HD likes)
> >
> > Sincerely
> >
> > J. I.
> >
> > -------------------------------------------------------------------------
> > This SF.Net email is sponsored by the Moblin Your Move Developer's
> challenge
> > Build the coolest Linux based applications with Moblin SDK & win great
> prizes
> > Grand prize is a trip for two to an Open Source event anywhere in the
> world
> > http://moblin-contest.org/redirect.php?banner_id=100&url=/
> > _______________________________________________ gstreamer-devel mailing
> list gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
> -------------------------------------------------------------------------
> This SF.Net email is sponsored by the Moblin Your Move Developer's
> challenge
> Build the coolest Linux based applications with Moblin SDK & win great
> prizes
> Grand prize is a trip for two to an Open Source event anywhere in the world
> http://moblin-contest.org/redirect.php?banner_id=100&url=/
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20080910/7c5452c4/attachment.htm>