problem with vaapi

[Gofrane Haj Ahmed]

Hello,

when I run
*gst-launch-1.0 filesrc location=source.mp4 ! qtdemux ! vaapidecode !
vaapisink *

I got this error

ibva info: VA-API version 0.36.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_36
libva info: va_openDriver() returns 0
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Got context from element 'vaapidecode0': gst.vaapi.Display=context,
display=(GstVaapiDisplay)NULL;
ERROR: from element /GstPipeline:pipeline0/GstQTDemux:qtdemux0: GStreamer
encountered a general stream error.
Additional debug info:
qtdemux.c(4404): gst_qtdemux_loop ():
/GstPipeline:pipeline0/GstQTDemux:qtdemux0:
streaming stopped, reason not-supported
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...


*I have a Dell Vostro 1014 having GMA 4500 mhd.*
*I use Ubuntu 14.04*


best regards
Ghofrane
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