Dongchuan Zhang

I met this issue recently. It seems that once caps is negotiated, the interpipesink->caps_negotiated would be fixed. So if upstream triggers caps renegotiation with different framerate, the caps query would...

I think there might be some side-effect could be introduced by this change. The gst_buffer_ref would increase the refcount of given buffer. This could cause the gst_buffer_make_writable always return a...

This is expected behavior from appsink (interpipesink derives from appsink). The preroll sample is always pushed downstream twice.