Hi, I'm trying to use V4L2_DEC_CMD_STOP to implement flush. First the userspace sent V4L2_DEC_CMD_STOP to initiate the flush. The driver set V4L2_BUF_FLAG_LAST on the last CAPTURE buffer. I thought implementing V4L2_DEC_CMD_START in the driver was enough to start the decoder. But last_buffer_dequeued had been set to true in v4l2 core. I couldn't clear last_buffer_dequeued without calling STREAMOFF from the userspace. If I need to call STREAMOFF/STREAMON after V4L2_DEC_CMD_STOP, it looks like V4L2_DEC_CMD_START is not useful. Did I miss anything? Regards, Wu-Cheng -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html