InitialObjectDescriptor {
 objectDescriptorID 1
 audioProfileLevelIndication 255
 visualProfileLevelIndication 254
 sceneProfileLevelIndication 1
 graphicsProfileLevelIndication 1
 ODProfileLevelIndication 1
 esDescr [
  ES_Descriptor {
   ES_ID 1
   decConfigDescr DecoderConfigDescriptor {
    streamType 3
    decSpecificInfo BIFSConfig {
     isCommandStream true
     pixelMetric true
     pixelWidth 600
     pixelHeight 400
    }
   }
  }
  ES_Descriptor {
   ES_ID 2
   decConfigDescr DecoderConfigDescriptor {
    streamType 1
   }
  }
 ]
}

EXTERNPROTO testURL [
 exposedField MFString theURL [""]
] ""od:20""

OrderedGroup {
 children [
  Background2D {
   backColor 1 1 1
  }
  WorldInfo {
   info ["This is a proto with an MF URL ISed field" "" "GPAC Regression Tests" "(C) 2002-2004 GPAC Team"]
   title "ExternProto with URL Test"
  }
  DEF testInstance testURL {
   theURL ["10"]
  }
 ]
}


AT 0 {
  UPDATE OD [
   ObjectDescriptor {
    objectDescriptorID 20
    URLstring "bifs-externproto-mfurl-lib.mp4"
   }
   ObjectDescriptor {
    objectDescriptorID 10
    esDescr [
     ES_Descriptor {
      ES_ID 3
      muxInfo MuxInfo {
       fileName "auxiliary_files/logo.jpg"
      }
     }
    ]
   }
  ]
}