<http://webisa.webdatacommons.org/prov/475290395> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/179204526> . <http://webisa.webdatacommons.org/179204526> <http://www.w3.org/ns/prov#value> "I had some problems in my app I made an app that can detect the available webcams and render them we can shift from one webcam to another at any time but the problems is when i switch the new render is shown as main stream and the old chosen webcam is shown in the background Here is an image that shows the prob:" . <http://webisa.webdatacommons.org/179204526> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/179204526> <http://www.w3.org/ns/prov#wasQuotedFrom> <stackoverflow.com> .