早年给群友做了一个直播推拉流的demo,玩具,真的是玩具,仅供玩笑。
首先需要一个推流端,把视频文件或者桌面窗口,或者摄像头的视频流推给直播服务器,
这里用的是vb6采用cmd命令行调用的方式,非常简陋的实现了个控制端,实际上是 ffmpeg 在工作。
然后需要一个播放器来从直播服务器拉取直播流。
Option Explicit
Const HTCAPTION = 2
Const WM_NCLBUTTONDOWN = &HA1
Dim chanXian$
Dim srv_ip$
'Private Const GWL_STYLE = (-16)
Dim has_Called As Boolean
Dim Ajax As New cAjax
Dim Pid_ffmpeg As Long
Dim HomeWanIp$
Const web_port = ":80"
Const outFormat = "rtmp"
Const outUrl = "rtmp://175.6.245.228:1935/live/room"
'Const outFormat = "rtsp"
'Const outUrl = "rtsp://live.a-vi.com/stream0.sdp"
Private Declare Function ReleaseCapture Lib "user32" () As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Long) As Long
Private Sub Form_Load()
label_state.Caption = "正在链接服务器"
' chanXian = getReg("cx_name")
' srv_ip = getReg("srv_ip")
' If chanXian = Empty Or srv_ip = Empty Then
' Unload Me
' Form1_clt.Show
' Exit Sub
' End If
' Wsk.RemoteHost = srv_ip
ShowMsg "准备就绪"
Dump App.LogMode
Text1.Text = "rtsp://admin:PDYGTG@192.168.0.9:554/h264/ch1/main/av_stream"
' Text1.Text = App.Path & "\demo.mp4"
End Sub
Private Sub Form_MouseDown(Button As Integer, Shift As Integer, x As Single, y As Single)
If Button = 1 Then
Dim ReturnVal As Long
x = ReleaseCapture()
ReturnVal = SendMessage(Me.hwnd, WM_NCLBUTTONDOWN, HTCAPTION, 0)
End If
End Sub
Private Sub Form_Resize()
If Me.WindowState <> 1 Then
With mainFrame
.Left = 60
.Width = Me.ScaleWidth - 120
End With
End If
End Sub
Private Sub Form_Unload(Cancel As Integer)
Call Label7_Click
End Sub
Private Sub label_state_Click()
MsgBox "输入推流内容点击“立即推流”按钮即可"
End Sub
Private Sub Label1_Click()
Form1_clt.Show
End Sub
Private Sub Label2_Click()
Me.WindowState = 1
End Sub
Private Sub Label3_Click()
Unload Me
End
End Sub
Private Sub Label4_MouseMove(Button As Integer, Shift As Integer, x As Single, y As Single)
Call Form_MouseDown(Button, Shift, x, y)
End Sub
Private Sub Label6_Click()
Call Label7_Click
End Sub
Private Sub Label7_Click()
' Wsk_send "cancel." & chanXian
Shell "taskkill /f /pid " & Pid_ffmpeg
has_Called = False
Label7.Caption = Label7.Tag
Label6.BackColor = &HCCCCCC
End Sub
Private Sub Label8_Click()
If has_Called = True Then Exit Sub
' 获取推流地址
Dim home_ip$
' Call Ajax.GetData(url:="http://api.a-vi.com/Home/getWanIp")
' HomeWanIp = Trim(Ajax.Res("ip"))
HomeWanIp = "live.a-vi.com"
' Wsk_send "call." & chanXian
Dim url$
url = App.Path & "\ffmpeg.exe -stream_loop -1 -re -i "
url = url & Trim(Text1.Text) & " -c copy -bufsize 1024000 -f "
url = url & outFormat & " " & outUrl
' url = url & HomeWanIp & ":554/stream0.sdp"
If App.LogMode = 0 Then
Pid_ffmpeg = Shell(url, vbNormalFocus)
Else
Pid_ffmpeg = Shell(url, vbHide)
End If
'"ffmpeg.exe -stream_loop -1 -re -i a.mp4 -c copy -bufsize 1024000 -f rtsp rtsp://192.168.168.1:554/stream0.sdp"
Dump url
has_Called = True
Label7.Caption = "正在推流,可点击这里取消..."
Label6.BackColor = &H8080FF
End Sub
'Private Function Wsk_send(ByVal s$) As Boolean
' If Wsk.State = 7 Then
' Wsk.SendData s
' Wsk_send = True
' End If
'End Function
Private Sub Label9_Click()
Call Label8_Click
End Sub
Private Sub Label9_MouseDown(Button As Integer, Shift As Integer, x As Single, y As Single)
Label8.BackColor = &HCCCCCC
End Sub
Private Sub Label9_MouseUp(Button As Integer, Shift As Integer, x As Single, y As Single)
Label8.BackColor = &HC0C000
End Sub
Private Sub Timer1_Timer()
' If Wsk.State = 0 Then
' ShowMsg "正在连接服务器"
' Wsk.Connect
' End If
'由于你的服务器没有web接口实时获取在线观众,此处可忽略
If has_Called = True Then
Label14.Visible = True
Label13.Visible = True
Call Ajax.GetData("http://" & HomeWanIp & web_port & "/api/v1/pushers")
' Dump Ajax.Res("total")
If CInt(Ajax.Res("total")) = 0 Then
' Call Label7_Click
Else
Label14.Caption = Ajax.Res("rows")(0)("onlines")
Text2.Text = Ajax.Res("rows")(0)("url")
Text2.Visible = True
Text3.Visible = True
End If
Else
Label14.Visible = False
Label13.Visible = False
Text2.Text = ""
Text2.Visible = False
Text3.Visible = False
End If
End Sub
Private Sub ShowMsg(ByVal s$)
label_state.Caption = s & "...使用帮助"
End Sub
播放器可以是多个,视频会同步播放的。
当然了,实际场景是每个用户自己电脑开一个播放器来观看直播流。
直播客户端的数量,取决于你的直播服务器的带宽,哈哈
后记:虽然说是玩具,但其实这真的是一个群友工厂的需求,虽然很简陋吧,但是满足了当时的现场需求,这里给出完整的vb源代码。
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