avviddec: Make sure to use a buffer pool with the correct width/height...
avviddec: Make sure to use a buffer pool with the correct width/height configured on it for pushing buffers downstream If downstream does not provide a (usable) pool, we would use our internal pool. But the internal pool might be configured with a different width/height because of padding, which then will cause problems if we push buffers from it directly downstream. Instead create a new pool if the width/height is different. This prevents crashes with vaapisink and d3dvideosink for example. Based on the debugging results and discussions with Nicolas Dufresne <nicolas.dufresne@collabora.com> https://bugzilla.gnome.org/show_bug.cgi?id=758344