[gst-devel] getting data format info

[Hendrik Schober]

thiagoss wrote:
> 
> On Mon, Sep 1, 2008 at 11:18 AM, Hendrik Schober <spamtrap at gmx.de 
> <mailto:spamtrap at gmx.de>> wrote:
> 
>     Hi,
> 
>     we are using (or is that abusing?) gstreamer in order to capture
>     video data from an USB camera. For this we have setup a v4lsrc
>     and a fake sink and grab the data in the handoff hook of the
>     latter. So far, so good. However, despite several hours of
>     tinkering we haven't found out how to determine what format
>     (width, height, encoding) the data comes in.
>     What do we need to do to get these values?
> 
> 
> Check the 'caps' in the source pad of the v4lsrc element.

  Thanks for your answer.
  In fact, we already did that -- and got back a rather long
  list of caps. But that doesn't tell us which one's currently
  used. (Also, they specify a range for width and height, while
  we need the ones that actually are negotiated.)

  Schobi