NIMVideoObject 成员列表

成员的完整列表，这些成员属于 NIMVideoObject,包括所有继承而来的类成员

	coverPath	NIMVideoObject
	coverSize	NIMVideoObject
	coverUrl	NIMVideoObject
	displayName	NIMVideoObject
	duration	NIMVideoObject
	fileLength	NIMVideoObject
-	initWithData:extension:	NIMVideoObject
-	initWithData:extension:scene:	NIMVideoObject
-	initWithSourcePath:	NIMVideoObject
-	initWithSourcePath:scene:	NIMVideoObject
	md5	NIMVideoObject
	message	<NIMMessageObject>
	path	NIMVideoObject
	qchatMessage	<NIMMessageObject>
-	setUploadURL:	NIMVideoObject
-	type	<NIMMessageObject>
	url	NIMVideoObject