GStreamer encountered a general stream error when doing VPP test
1. Testing Steps:
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use following command to do VPP test:
    gst-launch-1.0 filesrc location=/media/ts/MP4_h264_nHD_30FPS_580Kbps_AAC_44.1KHz_64Kbps_10sec0.7Mb_BBB-300.MP4 ! qtdemux ! vaapidecode ! vaapipostproc denoise=1 ! vaapisink sync=false
	
2. Log:
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root@x-sklmedia:/GFX/Test/Infrastructure/infrastructure# gst-launch-1.0 filesrc location=/media/ts/MP4_h264_nHD_30FPS_580Kbps_AAC_44.1KHz_64Kbps_10sec0.7Mb_BBB-300.MP4 ! qtdemux ! vaapidecode ! vaapipostproc denoise=1 ! vaapisink sync=false
libva info: VA-API version 0.99.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /opt/X11R7/lib/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_0_99
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(4434): gst_qtdemux_loop (): /GstPipeline:pipeline0/GstQTDemux:qtdemux0:
streaming stopped, reason not-negotiated
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...

3. Testing Env:
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Libva:  (staging) d9626b77f865ce7bdbc8c78988a86d3e4f55d67b
Libva_intel_driver:(staging)22439f1fcebbd2c1d563503720b1123a4bb97160