Whenever the surface is resized before the stream is negotiated, we endup with an assertion in libgstvideo. gst_video_center_rect: assertion 'src->h != 0' failed This fixes it, by following the style aready in place, which is to ensure surfaces have a minimum size of 1x1. Fixes #1139 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3467>