Yes, it seems like it's waiting forever in gstv4l2bufferpool::gst_v4l2_buffer_pool_poll If I add a pre condition step (open /dev/video1 and then close /dev/video1 )before starting the stream it's seems to work. Is there many improvements from 1.12 to 1.14 regarding v4l2 ? -- Sent from: http://gstreamer-devel.966125.n4.nabble.com/