AnsweredAssumed Answered

vpudec does not like "queue(2)"

Question asked by christapp on Jul 17, 2013
Latest reply on Jul 19, 2013 by Jack Mao

This is best demonstrated using an example:


export GST_DEBUG="*:2"


1) gst-launch playbin2 uri=

2) gst-launch playbin2 uri= video-sink="multiqueue ! mfw_v4lsink"

3) gst-launch playbin2 uri= video-sink="queue ! mfw_v4lsink"

4) gst-launch playbin2 uri= video-sink="queue2 ! mfw_v4lsink"


Playback for 1) and 2) is good, where as playback for 3) and 4) starts of choppy, stalls and gets lots of messages of the form:


0:00:00.472157023  7566 0x40d60150 WARN    vpudec vpudec.c:1578:gst_vpudec_chain: Got no frame buffer message, return 0x89, 10 frames in displaying queue!!


GST_DEBUG=GST_ELEMENT_FACTORY:3 shows that playbin2 without the video-sink property uses 'multiqueue'.


So, it looks as if something is going on with 'vpudec' when the pipeline includes a 'queue' or 'queue2' element.

This was running on a Wandboard Quad using an image built using Yocto.

Can anyone explain what's going on here?