Detecting video stream resolution in appsink with GStreamer 1.0

[Tim Müller]

On Mon, 2018-01-29 at 07:23 -0700, tobatrance wrote:

Hi,

> Once you pulled a sample with gst_app_sink_pull_sample you can
> extract its buffer with gst_sample_get_buffer and following get the
> video frame and video info with gst_video_frame_map. The video info
> object got the information you're looking for.

That should work. Alternatively, you can also look at the GstCaps in
the GstSample with gst_sample_get_caps() and either poke at the fields
directly or parse it into a VideoInfo struct with
gst_video_info_from_caps(). Or you look at the caps on the element's
sink pad with gst_pad_get_current_caps().

Cheers
 -tim

-- 
Tim Müller, Centricular Ltd - http://www.centricular.com