flash actionscript 3.0 publish h264 stream

NetStream.publish捕捉摄像头的图像，并编码后发送到FMS服务器。flash 11终于支持发布h264的流。因为推送h264的流，需要flash player能编码h264格式视频，在flash player 11加入了h264编码器。

官方参考：

http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/media/H264VideoStreamSettings.html

编写推送h164的as程序必须要较高版本的sdk，之前使用的flex sdk 4.1的flash player版本是10.0，不能用来编写这个程序。

下载flex sdk：

http://www.adobe.com/devnet/flex/flex-sdk-download.html

h264和h263对比图（同样的码率和分辨率）：

as3.0代码：

[javascript] view plaincopyprint?

1. package  
2. {  
3.     import fl.controls.Button;  
4.     import fl.controls.CheckBox;  
5.     import fl.controls.ComboBox;  
6.     import fl.controls.Label;  
7.     import fl.controls.TextInput;  
8.       
9.     import flash.display.Sprite;  
10.     import flash.display.StageAlign;  
11.     import flash.display.StageScaleMode;  
12.     import flash.events.Event;  
13.     import flash.events.MouseEvent;  
14.     import flash.events.NetStatusEvent;  
15.     import flash.media.Camera;  
16.     import flash.media.H264Profile;  
17.     import flash.media.H264VideoStreamSettings;  
18.     import flash.media.Microphone;  
19.     import flash.media.Video;  
20.     import flash.net.NetConnection;  
21.     import flash.net.NetStream;  
22.       
23.     public class H264Publisher extends Sprite  
24.     {     
25.         public function H264Publisher()  
26.         {  
27.             if(this.stage == null){  
28.                 this.addEventListener(Event.ADDED_TO_STAGE, this.onAddedToStage);  
29.             }  
30.             else{  
31.                 this.onAddedToStage(null);  
32.             }  
33.         }  
34.           
35.         private function onAddedToStage(evt:Event):void{  
36.             this.stage.align = StageAlign.TOP_LEFT;  
37.             this.stage.scaleMode = StageScaleMode.NO_SCALE;  
38.               
39.             var urlPanel:Sprite = new Sprite();  
40.             this.addUrlPanel(urlPanel, onMouseClickStartPublish, onMouseClickStopPublish);  
41.               
42.             var cameraPanel:Sprite = new Sprite();  
43.             this.addCameraPanel(cameraPanel);  
44.               
45.             var encodingPanel:Sprite = new Sprite();  
46.             this.addEncodingPanel(encodingPanel);  
47.               
48.             urlPanel.x = 10;  
49.             urlPanel.y = 10;  
50.               
51.             cameraPanel.x = urlPanel.x;  
52.             cameraPanel.y = urlPanel.y + 30;  
53.               
54.             encodingPanel.x = cameraPanel.x;  
55.             encodingPanel.y = cameraPanel.y + 30;  
56.               
57.             video = new Video();  
58.             video.x = encodingPanel.x;  
59.             video.y = encodingPanel.y + 30;  
60.               
61.             this.addChild(urlPanel);  
62.             this.addChild(cameraPanel);  
63.             this.addChild(encodingPanel);  
64.             this.addChild(video);  
65.         }  
66.           
67.         private var fmsUrl:String;  
68.         private var fmsStream:String;  
69.         private function discoveryFmsUrl():void{  
70.             var url:String = txtUrl.text;  
71.               
72.             if(url.toLowerCase().indexOf("rtmp://") < 0){  
73.                 trace("[error] the url must start with rtmp://", "error");  
74.                 return;  
75.             }  
76.               
77.             // remove the start rtmp://  
78.             url = url.substr(url.toLowerCase().indexOf("rtmp://") + "rtmp://".length);  
79.               
80.             var server:String = url.substr(0, url.indexOf("/"));  
81.             url = url.substr(url.indexOf("/") + 1);  
82.               
83.             var port:String = "1935";  
84.             if(server.indexOf(":") >= 0){  
85.                 port = server.substr(server.indexOf(":")+1);  
86.                 server = server.substr(0, server.indexOf(":"));  
87.             }  
88.               
89.             var appIndex:int = -1;  
90.             for(var i:int = 0; i < this.cbAppLevel.selectedIndex + 1; i++){  
91.                 if(url.indexOf("/", appIndex + 1) < 0){  
92.                     break;  
93.                 }  
94.                   
95.                 appIndex = url.indexOf("/", appIndex + 1);  
96.             }  
97.             var app:String = url.substr(0, appIndex);  
98.             var stream:String = url.substr(appIndex + 1);  
99.               
100.             // if user input ip address, set the server; otherwise, set the vhost.  
101.             var serverIsIPAddress:Boolean = true;  
102.             var serverItems:Array = server.split(".");  
103.             for(i = 0; i < serverItems.length; i++){  
104.                 if(isNaN(Number(serverItems[i]))){  
105.                     serverIsIPAddress = false;  
106.                 }  
107.             }  
108.               
109.             fmsUrl = "rtmp://" + server + ":" + port + "/" + app;  
110.             fmsStream = stream;  
111.         }  
112.           
113.         private function buildEncodingParameters(publishStream:NetStream, c:Camera, m:Microphone):void{  
114.             var x264profile:String = (this.cbX264Profile.selectedLabel == "Main") ? H264Profile.MAIN : H264Profile.BASELINE;  
115.             var x264level:String = this.cbX264Level.selectedLabel;  
116.             var x264KeyFrameInterval:int = int(this.cbX264KeyFrameInterval.selectedIndex + 1);  
117.             var cameraWidth:int = int(this.cbCameraSize.selectedLabel.substr(0, this.cbCameraSize.selectedLabel.indexOf("x")));  
118.             var cameraHeight:int = int(this.cbCameraSize.selectedLabel.substr(this.cbCameraSize.selectedLabel.indexOf("x") + 1));;  
119.             var cameraFps:Number = Number(this.cbCameraFps.selectedLabel);  
120.             var cameraBitrate:int = int(this.cbCameraBitrate.selectedLabel);  
121.             var cameraQuality:int = 85;  
122.             var microEncodeQuality:int = 8;  
123.             var microRate:int = 22; // 22 === 22050 Hz  
124.               
125.             trace("[Publish] h.264(x264) encoding parameters: "   
126.                 + "profile=" + x264profile   
127.                 + ", level=" + x264level  
128.                 + ", keyFrameInterval(gop)=" + x264KeyFrameInterval  
129.                 + "; video(camera) width=" + cameraWidth  
130.                 + ", height=" + cameraHeight  
131.                 + ", fps=" + cameraFps  
132.                 + ", bitrate=" + cameraBitrate  
133.                 + ", quality=" + cameraQuality  
134.                 + "; audio(microphone) encodeQuality=" + microEncodeQuality  
135.                 + ", rate=" + microRate + "(22050Hz)"  
136.             );  
137.               
138.             var h264Settings:H264VideoStreamSettings = new H264VideoStreamSettings();  
139.             // we MUST set its values first, then set the NetStream.videoStreamSettings, or it will keep the origin values.  
140.             h264Settings.setProfileLevel(x264profile, x264level);   
141.             publishStream.videoStreamSettings = h264Settings;  
142.             // the setKeyFrameInterval/setMode/setQuality use the camera settings.  
143.             // http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/media/VideoStreamSettings.html  
144.             // Note This feature will be supported in future releases of Flash Player and AIR, for now, Camera parameters are used.  
145.             /*h264Settings.setKeyFrameInterval(4); 
146.             h264Settings.setMode(800, 600, 15); 
147.             h264Settings.setQuality(500, 0);*/  
148.               
149.             // set the camera and microphone.  
150.               
151.             // setKeyFrameInterval(keyFrameInterval:int):void  
152.             //  keyFrameInterval:int — A value that specifies which video frames are transmitted in full (as keyframes) instead of being   
153.             //      interpolated by the video compression algorithm. A value of 1 means that every frame is a keyframe, a value of 3 means   
154.             //      that every third frame is a keyframe, and so on. Acceptable values are 1 through 48.  
155.             c.setKeyFrameInterval(x264KeyFrameInterval);  
156.               
157.             // setMode(width:int, height:int, fps:Number, favorArea:Boolean = true):void  
158.             //  width:int — The requested capture width, in pixels. The default value is 160.  
159.             //  height:int — The requested capture height, in pixels. The default value is 120.  
160.             //  fps:Number — The requested rate at which the camera should capture data, in frames per second. The default value is 15.  
161.             c.setMode(cameraWidth, cameraHeight, cameraFps);  
162.               
163.             // setQuality(bandwidth:int, quality:int):void  
164.             //  bandwidth:int — Specifies the maximum amount of bandwidth that the current outgoing video feed can use, in bytes per second.   
165.             //      To specify that the video can use as much bandwidth as needed to maintain the value of quality, pass 0 for bandwidth.   
166.             //      The default value is 16384.  
167.             //  quality:int — An integer that specifies the required level of picture quality, as determined by the amount of compression   
168.             //      being applied to each video frame. Acceptable values range from 1 (lowest quality, maximum compression) to 100   
169.             //      (highest quality, no compression). To specify that picture quality can vary as needed to avoid exceeding bandwidth,   
170.             //      pass 0 for quality.   
171.             //  winlin:   
172.             //      bandwidth is in bps not kbps. 500*1000 = 500kbps.  
173.             //      quality=1 is lowest quality, 100 is highest quality.  
174.             c.setQuality(cameraBitrate * 1000, cameraQuality);  
175.               
176.             // if no microphone, donot set the params.  
177.             if(m == null){  
178.                 return;  
179.             }  
180.               
181.             // The encoded speech quality when using the Speex codec. Possible values are from 0 to 10. The default value is 6. Higher numbers   
182.             // represent higher quality but require more bandwidth, as shown in the following table. The bit rate values that are listed represent   
183.             // net bit rates and do not include packetization overhead.  
184.             m.encodeQuality = microEncodeQuality;  
185.               
186.             // The rate at which the microphone is capturing sound, in kHz. Acceptable values are 5, 8, 11, 22, and 44. The default value is 8 kHz   
187.             // if your sound capture device supports this value. Otherwise, the default value is the next available capture level above 8 kHz that   
188.             // your sound capture device supports, usually 11 kHz.  
189.             m.rate = microRate;  
190.         }  
191.           
192.         private var publishStream:NetStream;  
193.         private var publishConnection:NetConnection;  
194.         private function onMouseClickStartPublish(evt:MouseEvent):void{  
195.             // if published, donothing  
196.             if(publishStream != null){  
197.                 return;  
198.             }  
199.               
200.             this.btnStartPublish.enabled = false;  
201.             this.btnStopPublish.enabled = true;  
202.               
203.             this.discoveryFmsUrl();  
204.               
205.             publishConnection = new NetConnection();  
206.             var conn:NetConnection = publishConnection;  
207.               
208.             conn.client = {};  
209.             conn.client.onBWDone = function():void{};  
210.               
211.             conn.addEventListener(NetStatusEvent.NET_STATUS, function(evt:NetStatusEvent):void{  
212.                 trace("[Publish][connection] code:" + evt.info.code);  
213.                   
214.                 switch(evt.info.code){  
215.                     case "NetConnection.Connect.Success":  
216.                         publishStream = new NetStream(conn);  
217.                         // microphone and camera  
218.                         var m:Microphone = Microphone.getMicrophone(cbMicrophone.selectedIndex);  
219.                         // Remark: the name is the index!  
220.                         var c:Camera = Camera.getCamera(String(cbCamera.selectedIndex));  
221.                         if(c == null){  
222.                             trace("[Publish][error] failed to open camera(name=" + String(cbCamera.selectedIndex) + "): " + cbCamera.selectedLabel, "error");  
223.                             cleanupPublishedStream();  
224.                             break;  
225.                         }  
226.                         else if(c.muted){  
227.                             trace("[Publish][error] open camera(name=" + String(cbCamera.selectedIndex) + ") failed, it's muted: " + cbCamera.selectedLabel, "error");  
228.                             cleanupPublishedStream();  
229.                             break;  
230.                         }  
231.                           
232.                         buildEncodingParameters(publishStream, c, m);  
233.                           
234.                         publishStream.addEventListener(NetStatusEvent.NET_STATUS, function(evt:NetStatusEvent):void{  
235.                             trace("[Publish][NetStreamStatus]" + evt.info.code);  
236.                               
237.                             switch(evt.info.code){  
238.                                 case "NetStream.Publish.Start":  
239.                                     var h264:H264VideoStreamSettings = publishStream.videoStreamSettings as H264VideoStreamSettings;  
240.                                     trace("[Publish] video codec: " + h264.codec   
241.                                         + ", profile=" + h264.profile  
242.                                         + ", level=" + h264.level  
243.                                         + ", quality=" + h264.quality  
244.                                         + ", fps=" + h264.fps  
245.                                         + ", gop=" + h264.keyFrameInterval  
246.                                         + ", bandwidth=" + h264.bandwidth  
247.                                         + ", size=" + h264.width + "x" + h264.height);  
248.                                     break;  
249.                                 case "NetStream.Publish.BadName":  
250.                                     cleanupPublishedStream();  
251.                                     break;  
252.                             }  
253.                         });  
254.                         publishStream.publish(fmsStream);  
255.                           
256.                         // attach video and audio.  
257.                         trace("[Publish][debug] start publish, using camera(name=" + String(cbCamera.selectedIndex) + "): " + c.name);  
258.                         publishStream.attachCamera(c);  
259.                         if(m != null && !m.muted){  
260.                             trace("[Publish][debug] start publish, using microphone(name=" + String(cbMicrophone.selectedIndex) + "): " + m.name);  
261.                             publishStream.attachAudio(m);  
262.                         }  
263.                         restartPlayback();  
264.                         break;  
265.                     case "NetConnection.Connect.Rejected":  
266.                     case "NetConnection.Connect.Failed":  
267.                         cleanupPublishedStream();  
268.                         break;  
269.                 }  
270.             });  
271.               
272.             conn.connect(fmsUrl);  
273.         }  
274.         private function cleanupPublishedStream():void{  
275.             this.btnStartPublish.enabled = true;  
276.             this.btnStopPublish.enabled = false;  
277.             if(this.publishStream != null){  
278.                 this.publishStream.close();  
279.             }  
280.             if(this.publishConnection != null){  
281.                 this.publishConnection.close();  
282.             }  
283.             this.publishStream = null;  
284.         }  
285.           
286.         public var stream:NetStream;  
287.         private var conn:NetConnection;  
288.         private var video:Video;  
289.         private function restartPlayback():void{  
290.             // stream is playing, resume it.  
291.             if(this.stream != null){  
292.                 this.stream.close();  
293.             }  
294.               
295.             conn = new NetConnection();  
296.               
297.             conn.client = {};  
298.             conn.client.onBWDone = function():void{};  
299.             conn.addEventListener(NetStatusEvent.NET_STATUS, function(evt:NetStatusEvent):void{  
300.                 trace("[connection] code:" + evt.info.code + " desc:" + evt.info.description);  
301.                   
302.                 switch(evt.info.code){  
303.                     case "NetConnection.Connect.Success":  
304.                         stream = new NetStream(conn);  
305.                         video.attachNetStream(stream);  
306.                           
307.                         //stream.bufferTime = 3;  
308.                         stream.addEventListener(NetStatusEvent.NET_STATUS, function(evt:NetStatusEvent):void{  
309.                             trace("[NetStreamStatus]" + evt.info.code + " desc:" + evt.info.description);  
310.                         });  
311.                         stream.client = {};  
312.                         stream.client.onMetaData = function onMetadata(metadata:Object):void{  
313.                             var o:Object = {};  
314.                             for(var key:String in metadata){  
315.                                 o[key] = metadata[key];  
316.                                 trace("[metadata] " + "key=" + key + ", value=" + o[key]);  
317.                             }  
318.                               
319.                             if(metadata.width == undefined){  
320.                                 metadata.width = 10;  
321.                                 trace("[warning] metadata.width is undefied, set to 10");  
322.                             }  
323.                             if(metadata.height == undefined){  
324.                                 metadata.height = 10;  
325.                                 trace("[warning] metadata.height is undefied, set to 10");  
326.                             }  
327.                               
328.                             video.width = metadata.width;  
329.                             video.height = metadata.height;  
330.                         };  
331.                           
332.                         if(!cbIsLive.selected){  
333.                             stream.play(fmsStream, 0);  
334.                         }  
335.                         else{  
336.                             stream.play(fmsStream);  
337.                         }  
338.                         break;  
339.                     case "NetConnection.Connect.Rejected":  
340.                     case "NetConnection.Connect.Failed":  
341.                         stream.close();  
342.                         stream = null;  
343.                         break;  
344.                 }  
345.             });  
346.             conn.connect(fmsUrl);  
347.         }  
348.           
349.         private function onMouseClickStopPublish(evt:MouseEvent):void{  
350.             this.cleanupPublishedStream();  
351.         }  
352.           
353.         private var txtUrl:TextInput;  
354.         private var btnStartPublish:Button;  
355.         private var btnStopPublish:Button;  
356.         private var cbAppLevel:ComboBox;  
357.         private var cbIsLive:CheckBox;  
358.         private function addUrlPanel(  
359.             panel:Sprite,   
360.             onMouseClickStartPublish:Function, onMouseClickStopPublish:Function  
361.         ):void{  
362.             var lblUrl:Label = new Label();  
363.             lblUrl.text = "RTMP Url:";  
364.             lblUrl.width = 50;  
365.             panel.addChild(lblUrl);  
366.               
367.             txtUrl = new TextInput();  
368.             txtUrl.width = 380;  
369.             txtUrl.x = lblUrl.x + lblUrl.width + 3;  
370.             panel.addChild(txtUrl);  
371.               
372.             cbIsLive = new CheckBox();  
373.             cbIsLive.selected = true;  
374.             cbIsLive.label = "Live";  
375.             cbIsLive.width = 53;  
376.             cbIsLive.x = txtUrl.x + txtUrl.width + 0;  
377.             panel.addChild(cbIsLive);  
378.               
379.             cbAppLevel = new ComboBox();  
380.             cbAppLevel.addItem({label: "1级App"});  
381.             cbAppLevel.addItem({label: "2级App"});  
382.             cbAppLevel.addItem({label: "3级App"});  
383.             cbAppLevel.addItem({label: "4级App"});  
384.             cbAppLevel.width = 70;  
385.             cbAppLevel.x = cbIsLive.x + cbIsLive.width + 0;  
386.             panel.addChild(cbAppLevel);  
387.               
388.             btnStartPublish = new Button();  
389.             btnStartPublish.label = "发布流";  
390.             btnStartPublish.width = 60;  
391.             btnStartPublish.x = cbAppLevel.x + cbAppLevel.width + 3;  
392.             btnStartPublish.addEventListener(MouseEvent.CLICK, onMouseClickStartPublish);  
393.             panel.addChild(btnStartPublish);  
394.               
395.             btnStopPublish = new Button();  
396.             btnStopPublish.label = "停止发布";  
397.             btnStopPublish.width = 60;  
398.             btnStopPublish.enabled = false;  
399.             btnStopPublish.x = btnStartPublish.x + btnStartPublish.width + 3;  
400.             btnStopPublish.addEventListener(MouseEvent.CLICK, onMouseClickStopPublish);  
401.             panel.addChild(btnStopPublish);  
402.         }  
403.           
404.         private var cbX264Profile:ComboBox;  
405.         private var cbX264Level:ComboBox;  
406.         private var cbX264KeyFrameInterval:ComboBox;  
407.         private var cbCameraSize:ComboBox;  
408.         private var cbCameraFps:ComboBox;  
409.         private var cbCameraBitrate:ComboBox;  
410.         private function addEncodingPanel(  
411.             panel:Sprite  
412.         ):void{  
413.             var lblX264Profile:Label = new Label();  
414.             lblX264Profile.text = "Profile:";  
415.             lblX264Profile.width = 38;  
416.             lblX264Profile.y = 2;  
417.             panel.addChild(lblX264Profile);  
418.               
419.             cbX264Profile = new ComboBox();  
420.             cbX264Profile.width = 72;  
421.             cbX264Profile.x = lblX264Profile.x + lblX264Profile.width + 0;  
422.             panel.addChild(cbX264Profile);  
423.             cbX264Profile.addItem({label:"Baseline"});  
424.             cbX264Profile.addItem({label:"Main"});  
425.               
426.             var lblX264Level:Label = new Label();  
427.             lblX264Level.text = "Level:";  
428.             lblX264Level.width = 32;  
429.             lblX264Level.y = 2;  
430.             lblX264Level.x = cbX264Profile.x + cbX264Profile.width + 1;  
431.             panel.addChild(lblX264Level);  
432.               
433.             cbX264Level = new ComboBox();  
434.             cbX264Level.width = 45;  
435.             cbX264Level.x = lblX264Level.x + lblX264Level.width + 1;  
436.             panel.addChild(cbX264Level);  
437.             var x264Levels:Array = ["1", "1b", "1.1", "1.2", "1.3", "2", "2.1", "2.2", "3", "3.1", "3.2", "4", "4.1", "4.2", "5", "5.1"];  
438.             for(var i:int = 0; i < x264Levels.length; i++){  
439.                 cbX264Level.addItem({label:x264Levels[i]});  
440.             }  
441.             cbX264Level.selectedIndex = 8;  
442.               
443.             var lblX264KeyFrameInterval:Label = new Label();  
444.             lblX264KeyFrameInterval.text = "GOP:";  
445.             lblX264KeyFrameInterval.width = 29;  
446.             lblX264KeyFrameInterval.y = 2;  
447.             lblX264KeyFrameInterval.x = cbX264Level.x + cbX264Level.width + 1;  
448.             panel.addChild(lblX264KeyFrameInterval);  
449.               
450.             cbX264KeyFrameInterval = new ComboBox();  
451.             cbX264KeyFrameInterval.width = 87;  
452.             cbX264KeyFrameInterval.x = lblX264KeyFrameInterval.x + lblX264KeyFrameInterval.width + 1;  
453.             panel.addChild(cbX264KeyFrameInterval);  
454.             for(i = 0; i < 48; i++){  
455.                 cbX264KeyFrameInterval.addItem({label:String(i + 1) + " seconds"});  
456.             }  
457.             cbX264KeyFrameInterval.selectedIndex = 3;  
458.               
459.             var lblCameraSize:Label = new Label();  
460.             lblCameraSize.text = "Size:";  
461.             lblCameraSize.width = 30;  
462.             lblCameraSize.y = 2;  
463.             lblCameraSize.x = cbX264KeyFrameInterval.x + cbX264KeyFrameInterval.width + 1;  
464.             panel.addChild(lblCameraSize);  
465.               
466.             cbCameraSize = new ComboBox();  
467.             cbCameraSize.width = 82;  
468.             cbCameraSize.x = lblCameraSize.x + lblCameraSize.width + 1;  
469.             panel.addChild(cbCameraSize);  
470.             var sizes:Array = ["176x144", "320x240", "352x240", "352x288", "640x480", "720x480", "720x576", "800x600", "1024x768", "1280x720", "1360x768", "1920x1080"];  
471.             for(i = 0; i < sizes.length; i++){  
472.                 cbCameraSize.addItem({label:sizes[i]});  
473.             }  
474.             cbCameraSize.selectedIndex = 1;  
475.               
476.             var lblCameraFps:Label = new Label();  
477.             lblCameraFps.text = "FPS:";  
478.             lblCameraFps.width = 28;  
479.             lblCameraFps.y = 2;  
480.             lblCameraFps.x = cbCameraSize.x + cbCameraSize.width + 1;  
481.             panel.addChild(lblCameraFps);  
482.               
483.             cbCameraFps = new ComboBox();  
484.             cbCameraFps.width = 58;  
485.             cbCameraFps.x = lblCameraFps.x + lblCameraFps.width + 1;  
486.             panel.addChild(cbCameraFps);  
487.             var fpses:Array = ["1.00", "4.00", "5.00", "6.00", "8.00", "10.00", "12.00", "14.98", "15.00", "20.00", "24.00", "25.00", "29.97", "30.00", "59.94", "60.00"];  
488.             for(i = 0; i < fpses.length; i++){  
489.                 cbCameraFps.addItem({label:fpses[i]});  
490.             }  
491.             cbCameraFps.selectedIndex = 8;  
492.               
493.             var lblCameraBitrate:Label = new Label();  
494.             lblCameraBitrate.text = "Bitrate:";  
495.             lblCameraBitrate.width = 40;  
496.             lblCameraBitrate.y = 2;  
497.             lblCameraBitrate.x = cbCameraFps.x + cbCameraFps.width + 1;  
498.             panel.addChild(lblCameraBitrate);  
499.               
500.             cbCameraBitrate = new ComboBox();  
501.             cbCameraBitrate.width = 58;  
502.             cbCameraBitrate.x = lblCameraBitrate.x + lblCameraBitrate.width + 1;  
503.             panel.addChild(cbCameraBitrate);  
504.             var bitrates:Array = ["10", "50", "100", "200", "350", "500", "650", "800", "950", "1000", "1200", "1500", "1800", "2000", "2500", "20000"];  
505.             for(i = 0; i < bitrates.length; i++){  
506.                 cbCameraBitrate.addItem({label:bitrates[i]});  
507.             }  
508.             cbCameraBitrate.selectedIndex = 3;  
509.         }  
510.           
511.         private var cbCamera:ComboBox;  
512.         private var cbMicrophone:ComboBox;  
513.         private function addCameraPanel(  
514.             panel:Sprite  
515.         ):void{  
516.             // camera   
517.             var lblCamera:Label = new Label();  
518.             lblCamera.text = "Available Cameras:";  
519.             lblCamera.width = 100;  
520.             panel.addChild(lblCamera);  
521.               
522.             cbCamera = new ComboBox();  
523.             cbCamera.width = 160;  
524.             cbCamera.x = lblCamera.x + lblCamera.width + 3;  
525.             panel.addChild(cbCamera);  
526.               
527.             var cameras:Array = Camera.names;  
528.             for(var i:int = 0; i < cameras.length; i++){  
529.                 cbCamera.addItem({label:cameras[i]});  
530.             }  
531.               
532.             // microphone   
533.             var lblMicrophone:Label = new Label();  
534.             lblMicrophone.text = "Available Microphones:";  
535.             lblMicrophone.width = 120;  
536.             lblMicrophone.x = cbCamera.x + cbCamera.width + 10;  
537.             panel.addChild(lblMicrophone);  
538.               
539.             cbMicrophone = new ComboBox();  
540.             cbMicrophone.width = 180;  
541.             cbMicrophone.x = lblMicrophone.x + lblMicrophone.width + 3;  
542.             panel.addChild(cbMicrophone);  
543.               
544.             var microphones:Array = Microphone.names;  
545.             for(i = 0; i < microphones.length; i++){  
546.                 cbMicrophone.addItem({label:microphones[i]});  
547.             }  
548.         }  
549.     }  
550. }  

package{import fl.controls.Button;import fl.controls.CheckBox;import fl.controls.ComboBox;import fl.controls.Label;import fl.controls.TextInput;import flash.display.Sprite;import flash.display.StageAlign;import flash.display.StageScaleMode;import flash.events.Event;import flash.events.MouseEvent;import flash.events.NetStatusEvent;import flash.media.Camera;import flash.media.H264Profile;import flash.media.H264VideoStreamSettings;import flash.media.Microphone;import flash.media.Video;import flash.net.NetConnection;import flash.net.NetStream;public class H264Publisher extends Sprite{public function H264Publisher(){if(this.stage == null){this.addEventListener(Event.ADDED_TO_STAGE, this.onAddedToStage);}else{this.onAddedToStage(null);}}private function onAddedToStage(evt:Event):void{this.stage.align = StageAlign.TOP_LEFT;this.stage.scaleMode = StageScaleMode.NO_SCALE;var urlPanel:Sprite = new Sprite();this.addUrlPanel(urlPanel, onMouseClickStartPublish, onMouseClickStopPublish);var cameraPanel:Sprite = new Sprite();this.addCameraPanel(cameraPanel);var encodingPanel:Sprite = new Sprite();this.addEncodingPanel(encodingPanel);urlPanel.x = 10;urlPanel.y = 10;cameraPanel.x = urlPanel.x;cameraPanel.y = urlPanel.y + 30;encodingPanel.x = cameraPanel.x;encodingPanel.y = cameraPanel.y + 30;video = new Video();video.x = encodingPanel.x;video.y = encodingPanel.y + 30;this.addChild(urlPanel);this.addChild(cameraPanel);this.addChild(encodingPanel);this.addChild(video);}private var fmsUrl:String;private var fmsStream:String;private function discoveryFmsUrl():void{var url:String = txtUrl.text;if(url.toLowerCase().indexOf("rtmp://") < 0){trace("[error] the url must start with rtmp://", "error");return;}// remove the start rtmp://url = url.substr(url.toLowerCase().indexOf("rtmp://") + "rtmp://".length);var server:String = url.substr(0, url.indexOf("/"));url = url.substr(url.indexOf("/") + 1);var port:String = "1935";if(server.indexOf(":") >= 0){port = server.substr(server.indexOf(":")+1);server = server.substr(0, server.indexOf(":"));}var appIndex:int = -1;for(var i:int = 0; i < this.cbAppLevel.selectedIndex + 1; i++){if(url.indexOf("/", appIndex + 1) < 0){break;}appIndex = url.indexOf("/", appIndex + 1);}var app:String = url.substr(0, appIndex);var stream:String = url.substr(appIndex + 1);// if user input ip address, set the server; otherwise, set the vhost.var serverIsIPAddress:Boolean = true;var serverItems:Array = server.split(".");for(i = 0; i < serverItems.length; i++){if(isNaN(Number(serverItems[i]))){serverIsIPAddress = false;}}fmsUrl = "rtmp://" + server + ":" + port + "/" + app;fmsStream = stream;}private function buildEncodingParameters(publishStream:NetStream, c:Camera, m:Microphone):void{var x264profile:String = (this.cbX264Profile.selectedLabel == "Main") ? H264Profile.MAIN : H264Profile.BASELINE;var x264level:String = this.cbX264Level.selectedLabel;var x264KeyFrameInterval:int = int(this.cbX264KeyFrameInterval.selectedIndex + 1);var cameraWidth:int = int(this.cbCameraSize.selectedLabel.substr(0, this.cbCameraSize.selectedLabel.indexOf("x")));var cameraHeight:int = int(this.cbCameraSize.selectedLabel.substr(this.cbCameraSize.selectedLabel.indexOf("x") + 1));;var cameraFps:Number = Number(this.cbCameraFps.selectedLabel);var cameraBitrate:int = int(this.cbCameraBitrate.selectedLabel);var cameraQuality:int = 85;var microEncodeQuality:int = 8;var microRate:int = 22; // 22 === 22050 Hztrace("[Publish] h.264(x264) encoding parameters: " + "profile=" + x264profile + ", level=" + x264level+ ", keyFrameInterval(gop)=" + x264KeyFrameInterval+ "; video(camera) width=" + cameraWidth+ ", height=" + cameraHeight+ ", fps=" + cameraFps+ ", bitrate=" + cameraBitrate+ ", quality=" + cameraQuality+ "; audio(microphone) encodeQuality=" + microEncodeQuality+ ", rate=" + microRate + "(22050Hz)");var h264Settings:H264VideoStreamSettings = new H264VideoStreamSettings();// we MUST set its values first, then set the NetStream.videoStreamSettings, or it will keep the origin values.h264Settings.setProfileLevel(x264profile, x264level); publishStream.videoStreamSettings = h264Settings;// the setKeyFrameInterval/setMode/setQuality use the camera settings.// http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/media/VideoStreamSettings.html// Note This feature will be supported in future releases of Flash Player and AIR, for now, Camera parameters are used./*h264Settings.setKeyFrameInterval(4);h264Settings.setMode(800, 600, 15);h264Settings.setQuality(500, 0);*/// set the camera and microphone.// setKeyFrameInterval(keyFrameInterval:int):void// keyFrameInterval:int — A value that specifies which video frames are transmitted in full (as keyframes) instead of being //interpolated by the video compression algorithm. A value of 1 means that every frame is a keyframe, a value of 3 means //that every third frame is a keyframe, and so on. Acceptable values are 1 through 48.c.setKeyFrameInterval(x264KeyFrameInterval);// setMode(width:int, height:int, fps:Number, favorArea:Boolean = true):void//  width:int — The requested capture width, in pixels. The default value is 160.//  height:int — The requested capture height, in pixels. The default value is 120.//  fps:Number — The requested rate at which the camera should capture data, in frames per second. The default value is 15.c.setMode(cameraWidth, cameraHeight, cameraFps);// setQuality(bandwidth:int, quality:int):void//  bandwidth:int — Specifies the maximum amount of bandwidth that the current outgoing video feed can use, in bytes per second. //To specify that the video can use as much bandwidth as needed to maintain the value of quality, pass 0 for bandwidth. //The default value is 16384.//  quality:int — An integer that specifies the required level of picture quality, as determined by the amount of compression // being applied to each video frame. Acceptable values range from 1 (lowest quality, maximum compression) to 100 //(highest quality, no compression). To specify that picture quality can vary as needed to avoid exceeding bandwidth, //pass 0 for quality.//  winlin://bandwidth is in bps not kbps. 500*1000 = 500kbps.//quality=1 is lowest quality, 100 is highest quality.c.setQuality(cameraBitrate * 1000, cameraQuality);// if no microphone, donot set the params.if(m == null){return;}// The encoded speech quality when using the Speex codec. Possible values are from 0 to 10. The default value is 6. Higher numbers // represent higher quality but require more bandwidth, as shown in the following table. The bit rate values that are listed represent // net bit rates and do not include packetization overhead.m.encodeQuality = microEncodeQuality;// The rate at which the microphone is capturing sound, in kHz. Acceptable values are 5, 8, 11, 22, and 44. The default value is 8 kHz // if your sound capture device supports this value. Otherwise, the default value is the next available capture level above 8 kHz that // your sound capture device supports, usually 11 kHz.m.rate = microRate;}private var publishStream:NetStream;private var publishConnection:NetConnection;private function onMouseClickStartPublish(evt:MouseEvent):void{// if published, donothingif(publishStream != null){return;}this.btnStartPublish.enabled = false;this.btnStopPublish.enabled = true;this.discoveryFmsUrl();publishConnection = new NetConnection();var conn:NetConnection = publishConnection;conn.client = {};conn.client.onBWDone = function():void{};conn.addEventListener(NetStatusEvent.NET_STATUS, function(evt:NetStatusEvent):void{trace("[Publish][connection] code:" + evt.info.code);switch(evt.info.code){case "NetConnection.Connect.Success":publishStream = new NetStream(conn);// microphone and cameravar m:Microphone = Microphone.getMicrophone(cbMicrophone.selectedIndex);// Remark: the name is the index!var c:Camera = Camera.getCamera(String(cbCamera.selectedIndex));if(c == null){trace("[Publish][error] failed to open camera(name=" + String(cbCamera.selectedIndex) + "): " + cbCamera.selectedLabel, "error");cleanupPublishedStream();break;}else if(c.muted){trace("[Publish][error] open camera(name=" + String(cbCamera.selectedIndex) + ") failed, it's muted: " + cbCamera.selectedLabel, "error");cleanupPublishedStream();break;}buildEncodingParameters(publishStream, c, m);publishStream.addEventListener(NetStatusEvent.NET_STATUS, function(evt:NetStatusEvent):void{trace("[Publish][NetStreamStatus]" + evt.info.code);switch(evt.info.code){case "NetStream.Publish.Start":var h264:H264VideoStreamSettings = publishStream.videoStreamSettings as H264VideoStreamSettings;trace("[Publish] video codec: " + h264.codec + ", profile=" + h264.profile+ ", level=" + h264.level+ ", quality=" + h264.quality+ ", fps=" + h264.fps+ ", gop=" + h264.keyFrameInterval+ ", bandwidth=" + h264.bandwidth+ ", size=" + h264.width + "x" + h264.height);break;case "NetStream.Publish.BadName":cleanupPublishedStream();break;}});publishStream.publish(fmsStream);// attach video and audio.trace("[Publish][debug] start publish, using camera(name=" + String(cbCamera.selectedIndex) + "): " + c.name);publishStream.attachCamera(c);if(m != null && !m.muted){trace("[Publish][debug] start publish, using microphone(name=" + String(cbMicrophone.selectedIndex) + "): " + m.name);publishStream.attachAudio(m);}restartPlayback();break;case "NetConnection.Connect.Rejected":case "NetConnection.Connect.Failed":cleanupPublishedStream();break;}});conn.connect(fmsUrl);}private function cleanupPublishedStream():void{this.btnStartPublish.enabled = true;this.btnStopPublish.enabled = false;if(this.publishStream != null){this.publishStream.close();}if(this.publishConnection != null){this.publishConnection.close();}this.publishStream = null;}public var stream:NetStream;private var conn:NetConnection;private var video:Video;private function restartPlayback():void{// stream is playing, resume it.if(this.stream != null){this.stream.close();}conn = new NetConnection();conn.client = {};conn.client.onBWDone = function():void{};conn.addEventListener(NetStatusEvent.NET_STATUS, function(evt:NetStatusEvent):void{trace("[connection] code:" + evt.info.code + " desc:" + evt.info.description);switch(evt.info.code){case "NetConnection.Connect.Success":stream = new NetStream(conn);video.attachNetStream(stream);//stream.bufferTime = 3;stream.addEventListener(NetStatusEvent.NET_STATUS, function(evt:NetStatusEvent):void{trace("[NetStreamStatus]" + evt.info.code + " desc:" + evt.info.description);});stream.client = {};stream.client.onMetaData = function onMetadata(metadata:Object):void{var o:Object = {};for(var key:String in metadata){o[key] = metadata[key];trace("[metadata] " + "key=" + key + ", value=" + o[key]);}if(metadata.width == undefined){metadata.width = 10;trace("[warning] metadata.width is undefied, set to 10");}if(metadata.height == undefined){metadata.height = 10;trace("[warning] metadata.height is undefied, set to 10");}video.width = metadata.width;video.height = metadata.height;};if(!cbIsLive.selected){stream.play(fmsStream, 0);}else{stream.play(fmsStream);}break;case "NetConnection.Connect.Rejected":case "NetConnection.Connect.Failed":stream.close();stream = null;break;}});conn.connect(fmsUrl);}private function onMouseClickStopPublish(evt:MouseEvent):void{this.cleanupPublishedStream();}private var txtUrl:TextInput;private var btnStartPublish:Button;private var btnStopPublish:Button;private var cbAppLevel:ComboBox;private var cbIsLive:CheckBox;private function addUrlPanel(panel:Sprite, onMouseClickStartPublish:Function, onMouseClickStopPublish:Function):void{var lblUrl:Label = new Label();lblUrl.text = "RTMP Url:";lblUrl.width = 50;panel.addChild(lblUrl);txtUrl = new TextInput();txtUrl.width = 380;txtUrl.x = lblUrl.x + lblUrl.width + 3;panel.addChild(txtUrl);cbIsLive = new CheckBox();cbIsLive.selected = true;cbIsLive.label = "Live";cbIsLive.width = 53;cbIsLive.x = txtUrl.x + txtUrl.width + 0;panel.addChild(cbIsLive);cbAppLevel = new ComboBox();cbAppLevel.addItem({label: "1级App"});cbAppLevel.addItem({label: "2级App"});cbAppLevel.addItem({label: "3级App"});cbAppLevel.addItem({label: "4级App"});cbAppLevel.width = 70;cbAppLevel.x = cbIsLive.x + cbIsLive.width + 0;panel.addChild(cbAppLevel);btnStartPublish = new Button();btnStartPublish.label = "发布流";btnStartPublish.width = 60;btnStartPublish.x = cbAppLevel.x + cbAppLevel.width + 3;btnStartPublish.addEventListener(MouseEvent.CLICK, onMouseClickStartPublish);panel.addChild(btnStartPublish);btnStopPublish = new Button();btnStopPublish.label = "停止发布";btnStopPublish.width = 60;btnStopPublish.enabled = false;btnStopPublish.x = btnStartPublish.x + btnStartPublish.width + 3;btnStopPublish.addEventListener(MouseEvent.CLICK, onMouseClickStopPublish);panel.addChild(btnStopPublish);}private var cbX264Profile:ComboBox;private var cbX264Level:ComboBox;private var cbX264KeyFrameInterval:ComboBox;private var cbCameraSize:ComboBox;private var cbCameraFps:ComboBox;private var cbCameraBitrate:ComboBox;private function addEncodingPanel(panel:Sprite):void{var lblX264Profile:Label = new Label();lblX264Profile.text = "Profile:";lblX264Profile.width = 38;lblX264Profile.y = 2;panel.addChild(lblX264Profile);cbX264Profile = new ComboBox();cbX264Profile.width = 72;cbX264Profile.x = lblX264Profile.x + lblX264Profile.width + 0;panel.addChild(cbX264Profile);cbX264Profile.addItem({label:"Baseline"});cbX264Profile.addItem({label:"Main"});var lblX264Level:Label = new Label();lblX264Level.text = "Level:";lblX264Level.width = 32;lblX264Level.y = 2;lblX264Level.x = cbX264Profile.x + cbX264Profile.width + 1;panel.addChild(lblX264Level);cbX264Level = new ComboBox();cbX264Level.width = 45;cbX264Level.x = lblX264Level.x + lblX264Level.width + 1;panel.addChild(cbX264Level);var x264Levels:Array = ["1", "1b", "1.1", "1.2", "1.3", "2", "2.1", "2.2", "3", "3.1", "3.2", "4", "4.1", "4.2", "5", "5.1"];for(var i:int = 0; i < x264Levels.length; i++){cbX264Level.addItem({label:x264Levels[i]});}cbX264Level.selectedIndex = 8;var lblX264KeyFrameInterval:Label = new Label();lblX264KeyFrameInterval.text = "GOP:";lblX264KeyFrameInterval.width = 29;lblX264KeyFrameInterval.y = 2;lblX264KeyFrameInterval.x = cbX264Level.x + cbX264Level.width + 1;panel.addChild(lblX264KeyFrameInterval);cbX264KeyFrameInterval = new ComboBox();cbX264KeyFrameInterval.width = 87;cbX264KeyFrameInterval.x = lblX264KeyFrameInterval.x + lblX264KeyFrameInterval.width + 1;panel.addChild(cbX264KeyFrameInterval);for(i = 0; i < 48; i++){cbX264KeyFrameInterval.addItem({label:String(i + 1) + " seconds"});}cbX264KeyFrameInterval.selectedIndex = 3;var lblCameraSize:Label = new Label();lblCameraSize.text = "Size:";lblCameraSize.width = 30;lblCameraSize.y = 2;lblCameraSize.x = cbX264KeyFrameInterval.x + cbX264KeyFrameInterval.width + 1;panel.addChild(lblCameraSize);cbCameraSize = new ComboBox();cbCameraSize.width = 82;cbCameraSize.x = lblCameraSize.x + lblCameraSize.width + 1;panel.addChild(cbCameraSize);var sizes:Array = ["176x144", "320x240", "352x240", "352x288", "640x480", "720x480", "720x576", "800x600", "1024x768", "1280x720", "1360x768", "1920x1080"];for(i = 0; i < sizes.length; i++){cbCameraSize.addItem({label:sizes[i]});}cbCameraSize.selectedIndex = 1;var lblCameraFps:Label = new Label();lblCameraFps.text = "FPS:";lblCameraFps.width = 28;lblCameraFps.y = 2;lblCameraFps.x = cbCameraSize.x + cbCameraSize.width + 1;panel.addChild(lblCameraFps);cbCameraFps = new ComboBox();cbCameraFps.width = 58;cbCameraFps.x = lblCameraFps.x + lblCameraFps.width + 1;panel.addChild(cbCameraFps);var fpses:Array = ["1.00", "4.00", "5.00", "6.00", "8.00", "10.00", "12.00", "14.98", "15.00", "20.00", "24.00", "25.00", "29.97", "30.00", "59.94", "60.00"];for(i = 0; i < fpses.length; i++){cbCameraFps.addItem({label:fpses[i]});}cbCameraFps.selectedIndex = 8;var lblCameraBitrate:Label = new Label();lblCameraBitrate.text = "Bitrate:";lblCameraBitrate.width = 40;lblCameraBitrate.y = 2;lblCameraBitrate.x = cbCameraFps.x + cbCameraFps.width + 1;panel.addChild(lblCameraBitrate);cbCameraBitrate = new ComboBox();cbCameraBitrate.width = 58;cbCameraBitrate.x = lblCameraBitrate.x + lblCameraBitrate.width + 1;panel.addChild(cbCameraBitrate);var bitrates:Array = ["10", "50", "100", "200", "350", "500", "650", "800", "950", "1000", "1200", "1500", "1800", "2000", "2500", "20000"];for(i = 0; i < bitrates.length; i++){cbCameraBitrate.addItem({label:bitrates[i]});}cbCameraBitrate.selectedIndex = 3;}private var cbCamera:ComboBox;private var cbMicrophone:ComboBox;private function addCameraPanel(panel:Sprite):void{// cameravar lblCamera:Label = new Label();lblCamera.text = "Available Cameras:";lblCamera.width = 100;panel.addChild(lblCamera);cbCamera = new ComboBox();cbCamera.width = 160;cbCamera.x = lblCamera.x + lblCamera.width + 3;panel.addChild(cbCamera);var cameras:Array = Camera.names;for(var i:int = 0; i < cameras.length; i++){cbCamera.addItem({label:cameras[i]});}// microphonevar lblMicrophone:Label = new Label();lblMicrophone.text = "Available Microphones:";lblMicrophone.width = 120;lblMicrophone.x = cbCamera.x + cbCamera.width + 10;panel.addChild(lblMicrophone);cbMicrophone = new ComboBox();cbMicrophone.width = 180;cbMicrophone.x = lblMicrophone.x + lblMicrophone.width + 3;panel.addChild(cbMicrophone);var microphones:Array = Microphone.names;for(i = 0; i < microphones.length; i++){cbMicrophone.addItem({label:microphones[i]});}}}}

其中用到了FlashCS5的控件，可以将c:\Program Files (x86)\Adobe\Adobe Flash CS5\Common\Configuration\Components\User Interface.fla打开后导出swc，然后在actionscript3项目中引用这个swc就可以了。