I'm working on two plugins, one is audio decoder and the second one is modified wasapisink. My pipeline looks like this: parser->decoder1->my_decoder->modified_wasapi_sink Once I added a custom 'qurey' function for the GstBaseSink class sinature: gboolean (*query) (GstBaseSink *sink, GstQuery *query); I'm getting the following message when starting the pipeline: sink0-actual-sink-wasapi: Received buffer without a new-segment. Assuming timestamps start from 0. Pipeline is PREROLLED ... Setting pipeline to PLAYING ... (gst-launch-1.0:16996): GStreamer-CRITICAL **: 16:10:39.047: gst_segment_to_running_time: assertion 'segment->format == format' failed The line with the assert message repeats all the time and there is no output on wasapisink. I've done some research on this, but I didn't get far. It seems like buffers with no segments can/should be discarded. What I don't understand is who was sending these segments when 'query' function was not overridden? Any help would be appreciated. Perhaps I should create a new segment and send ti before the playback starts, but I don't know when and where exactly should I do that. Also, information about setting segment time would help. Thanks. <hr align="left" width="300" /> Sent from the <a href="http://gstreamer-devel.966125.n4.nabble.com/">GStreamer-devel mailing list archive</a> at Nabble.com.