some video retated fixes

server/videoserver.go

@@ -10,7 +10,7 @@ import (
 type VideoServer struct {
 	Url       string `json:"url,omitempty"`
 	ApiKey    string `json:"api_key,omitempty"`
-	ApiSecret string `json:"secret,omitempty"`
+	ApiSecret string `json:"api_secret,omitempty"`
 }
 
 func (s *VideoServer) GetJoinToken(room, username string, validity time.Duration) (string, error) {