videorate problem

[Gofrane]

hello,

I ran this pipeline on order to play  this video with 15 framerate per
second 
*
gst-launch-1.0 -v filesrc location=big_buck_bunny_480p_h264.mov  !  qtdemux
! vaapidecode !  videorate  ! video/x-raw,framerate=15/1  ! vaapisink *

but I got this error

*libva 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/nvidia_drv_video.so
libva info: Found init function __vaDriverInit_0_32
libva info: va_openDriver() returns 0
WARNING: erroneous pipeline: could not link vaapidecode0 to videorate0*

thank you in advance






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