videocrop and videobox not working in video coordinate...

[Sebastian Dröge]

On Do, 2014-01-23 at 09:48 +0100, Eric Trousset wrote:
> Yes, I understand that. Then, when using playbin, how can I get the
> original video size and to be able the add a capfilter in front of the
> videocrop element to avoid video scaling prior to the cropping?

That's actually a good question and not so trivial at all. I assume you
have a custom video-sink on playbin, which is a bin that contains among
other things the capsfilter and videocrop.

If you're lucky then the following will work. You put
... ! videocrop ! videoscale ! capsfilter ! ...
inside the bin. The capsfilter would then make sure that the output
after cropping is exactly the size you want.

Alternatively you will have to handle negotiation and the caps events in
your bin and dynamically set proper caps on the capsfilters and set the
crop properties on videocrop accordingly.

-- 
Sebastian Dröge, Centricular Ltd - http://www.centricular.com
Expertise, Straight from the Source
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 949 bytes
Desc: This is a digitally signed message part
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20140125/af5f03b8/attachment.pgp>