caps: add some more debugging in _replace
caps: add some more debugging in _replace

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