Hi For video decoder, our video driver, which is V4l2 based, exposes two capabilities: 1. V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE for transaction of compressed buffers. 2. V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE for transaction of decoded/uncompressed buffers. We have a requirement to propagate "user specific data" from compressed buffer to uncompressed buffer. We are not able to find any field in "struct v4l2_buffer" which can be used for this purpose. Please suggest if this can be achieved with current V4L2 framework. Thanks Vinay -- 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