identity: print unset buffer timestamps or durations as 'none'
identity: print unset buffer timestamps or durations as 'none'

Like fakesink and fakesrc do.

collects/gstreamer,mparis/gstreamer,cfoch/gstreamer,shelsonjava/gstreamer,lovebug356/gstreamer,ensonic/gstreamer,mparis/gstreamer,krieger-od/gstreamer,surround-io/gstreamer,Lachann/gstreamer,cablelabs/gstreamer,ahmedammar/platform_external_gst_gstreamer,drothlis/gstreamer,krieger-od/gstreamer,cablelabs/gstreamer,Distrotech/gstreamer,ensonic/gstreamer,ahmedammar/platform_external_gst_gstreamer,jpxiong/gstreamer,Distrotech/gstreamer,jpxiong/gstreamer,drothlis/gstreamer,StreamUtils/gstreamer,mparis/gstreamer,surround-io/gstreamer,ahmedammar/platform_external_gst_gstreamer,lovebug356/gstreamer,lovebug356/gstreamer,cablelabs/gstreamer,lubosz/gstreamer,shelsonjava/gstreamer,ylatuya/gstreamer,lovebug356/gstreamer,Lachann/gstreamer,shelsonjava/gstreamer,centricular/gstreamer,drothlis/gstreamer,shelsonjava/gstreamer,krichter722/gstreamer,krieger-od/gstreamer,surround-io/gstreamer,ylatuya/gstreamer,krichter722/gstreamer,cfoch/gstreamer,StreamUtils/gstreamer,centricular/gstreamer,magcius/gstreamer,jpxiong/gstreamer,justinjoy/gstreamer,krichter722/gstreamer,ylatuya/gstreamer,surround-io/gstreamer,cablelabs/gstreamer,lubosz/gstreamer,StreamUtils/gstreamer,jpakkane/gstreamer,drothlis/gstreamer,ylatuya/gstreamer,magcius/gstreamer,Distrotech/gstreamer,StreamUtils/gstreamer,lovebug356/gstreamer,magcius/gstreamer,ensonic/gstreamer,jpakkane/gstreamer,jpakkane/gstreamer,StreamUtils/gstreamer,lubosz/gstreamer,jpakkane/gstreamer,centricular/gstreamer,lubosz/gstreamer,magcius/gstreamer,justinjoy/gstreamer,magcius/gstreamer,shelsonjava/gstreamer,jpakkane/gstreamer,surround-io/gstreamer,cfoch/gstreamer,Lachann/gstreamer,cfoch/gstreamer,collects/gstreamer,ylatuya/gstreamer,justinjoy/gstreamer,krichter722/gstreamer,krieger-od/gstreamer,ahmedammar/platform_external_gst_gstreamer,Lachann/gstreamer,krichter722/gstreamer,cfoch/gstreamer,justinjoy/gstreamer,krieger-od/gstreamer,ensonic/gstreamer,drothlis/gstreamer,jpxiong/gstreamer,cablelabs/gstreamer,jpxiong/gstreamer,lubosz/gstreamer,collects/gstreamer,Distrotech/gstreamer,mparis/gstreamer,centricular/gstreamer,ensonic/gstreamer,collects/gstreamer,ahmedammar/platform_external_gst_gstreamer,justinjoy/gstreamer,mparis/gstreamer,centricular/gstreamer,collects/gstreamer,Lachann/gstreamer,Distrotech/gstreamer