gstreamer meta data support

[CCob]

On 24/10/14 22:49, Hongkai wrote:
> Hi,
>   
> Under GStreamer framework, what should be the best practice, if I want to
> add some user-defined meta data to per video frame-by-frame data buffer, so
> that meta data can travel along the pipeline together with the actual video
> frame data, so that downstream element(s) can process it?
How do you plan on storing this extra per frame data?  Is it something 
that would already be inside the container, or something that is 
generated for each frame during decode?