Comments by malcomm - CodeProject

malcomm 23-Dec-13 15:38pm View

Thanks for that. Perfect!

malcomm 1-Jul-13 16:58pm View

Thanks Mike
Not sure if you got the bit about my app working perfectly UNTIL it is run under Win7 Scheduler?
Not really much difference in our code when it all boils down except that I am referencing a font via 'drawtext' which you do not. Good idea about capturing the entire error stream, didn't think of that - I was only capturing the frame rate for progress indication. When I capture the entire stream, it shows a failure loading the font -
[drawtext @ 01A39000] Could not load fontface from file 'TWCAB___.TTF': cannot open resource
Error initializing filter 'drawtext' with args 'fontfile=TWCAB___.TTF:text=Linley Point, NSW:x=790:y=96:fontsize=20:fontcolor=white:shadowcolor=0x000000EE:shadowx=1.5:shadowy=1.5'
Error opening filters!

The font is in the bin folder where it should be and therefore supposedly doesn't need a path specified. Remember it works fine in standalone and this problem only occurs under the Scheduler.
Well you can't just give it a normal path as the colon and forward slash are reserved ffmpeg drawtext commands so you have to change things thus - C:\AppPath\fontname.ttf becomes 'C\:\\AppPath\\fontname.ttf'. Note the single quotes around it in case there are spaces in the path name.

And that is working now in Scheduler.
Hooray!!!

BTW my paths are correct.

malcomm 19-Sep-12 20:40pm View

Hi Pete

Your code has given me some vaulable knowledge but unfortunately has failed to give me a solution to the Win7 Schduler crap.
I've gotten it to point where Win7 scheduler will fire up ffmpeg from within my app but ffmpeg is now failing with its internal processes...

I'm going to replace the Win7 scheduler and see how that goes.

Many thanks for all help. Your ideas have already been incorporated into another project of mine so are greatly appreciated.

regards
Malcom

malcomm 17-Sep-12 1:33am View

Pete
If you want to send yourself nuts with this, heres the XML that Scheduler exports for this app- WebCam_Archerfield_NNE.exe is the app name.
If you run Win7 then you could import that into scheduler and ruin your day a bit...

<task version="1.3" xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task">
<registrationinfo>
<date>2012-09-13T14:44:35.2076061
<author>Malcom-PC\Malcom

<Triggers>
<calendartrigger>
<startboundary>2012-09-13T14:43:46.4258159
<enabled>false
<schedulebyday>
<daysinterval>1

</Triggers>
<Principals>
<Principal id="Author">
<userid>Malcom-PC\Malcom
<logontype>InteractiveToken
<runlevel>HighestAvailable
</Principal>
</Principals>
<settings>
<multipleinstancespolicy>IgnoreNew
<disallowstartifonbatteries>true
<stopifgoingonbatteries>true
<allowhardterminate>true
<startwhenavailable>false
<runonlyifnetworkavailable>false
<idlesettings>
<stoponidleend>true
<restartonidle>false

<allowstartondemand>true
<enabled>true
<hidden>false
<runonlyifidle>false
<disallowstartonremoteappsession>false
<useunifiedschedulingengine>false
<waketorun>false
<executiontimelimit>P3D
<Priority>7</Priority>

<actions context="Author">
<exec>
<command>"C:\Users\Malcom\Documents\Visual Studio 2008\Projects\WebCams\TAWN WebCams QLD\WebCam_Archerfield_NNE\bin\Debug\WebCam_Archerfield_NNE.exe"
<arguments>True

malcomm 17-Sep-12 1:24am View

I ran it again with a command of 'ProcessAsUser.Launch("C:\Windows\notepad.exe")'.
Same results with the LaunchProcessAsUser function-
result = CreateProcessAsUser etc is returning false

I'll try the library as well as I have some 70 scheduled items that need to be manually entered if I ever get the roitten thing working. That'll save me a ton of time as I've had no luck creating schedule tasks in code so far.
Thanks
Malcom

malcomm 16-Sep-12 22:52pm View

OK, I'm an idiot.

I didn't realise you are using 'explorer' as a way to get the logged on users identity. I had replaced it with ffmpeg.

OK, well unfortunately still no luck.
Within LaunchProcessAsUser, result = CreateProcessAsUser... is returning false

It all runs fine when not under Scheduler control.

Don't give up me now Pete :)

malcomm 16-Sep-12 21:42pm View

Thanks Pete
back soon :)

malcomm 16-Sep-12 21:04pm View

Yup, hell of a command line but it is passing the app name + vaiables so should be ok.
Exactly the same details as what my ExecuteDosCommand function above handles.
Yes the quotes are part of it as created (in part)via this -
Dim strOptions As String = " -vf " & Chr(34) & "[in]crop=in_w:in_h-20:0:0,scale=1024:576 etc etc
So the quotes appear from ' & Chr(34) & '

malcomm 16-Sep-12 20:43pm View

I placed your code into a module in my existing app.
No, I screwed up and just placed the command variables into the appcmdline and the assumed the process was determined by the process name variable. doh!
Changed that now but I'm still having the same result.

Withing the Launch function, the appCmdLine variable is coming through as
"C:\Users\Malcom\Documents\Visual Studio 2008\Projects\WebCams\TAWN WebCams QLD\WebCam_Archerfield_NNE\bin\Debug\ffmpeg.exe -r 15 -i "D:\fcp_buffer\webcams\kalbar\%04d.jpg" -vf "[in]crop=in_w:in_h-20:0:0,scale=1024:576,drawtext=fontfile=TWCAB___.TTF:text='Archerfield, QLD':x=129:y=54:fontsize=25:fontcolor=white:shadowcolor=0x000000EE:shadowx=1.5:shadowy=1.5, drawtext=fontfile=TWCAB___.TTF:text='Monday':x=129:y=82:fontsize=16:fontcolor=white:shadowcolor=0x000000EE:shadowx=1:shadowy=1[out]" -b 6000k -s 720x576 -vcodec wmv2 -an -y "D:\fcp_buffer\webcams\kalbar\Archerfield_NNE.wmv""

The process name variable is set to "ffmpeg"

Stepping through-
ps.Length = 0
processId = -1
and obviously it returns false.

What else have I misunderstood :)

malcomm 16-Sep-12 19:45pm View

No luck with that one. Behaves thesame.
Thanks anyway...

malcomm 16-Sep-12 19:45pm View

Whew... and thanks

OK, I had a crack at this but now I'm lost.
As I understand it, the 'Launch' method looks for aprocess match in processes that are already running?
How do I tell it to start ffmpeg?

This is tehcode I currently use to run ffmpeg-
targetEXE is something like d:\xxx\ffmpeg.exe
arguments is something like " -vf scale=720:576 -f mov -vcodec dvvideo -r 25 -pix_fmt yuv411p -vtag dvpp -y " + outputFileName

Private Function ExecuteDosCommand(ByVal targetEXE As String, ByVal arguments As String, ByVal fileName As String) As Integer
Dim iCount As Integer = 0
Dim iExitCode As Integer = 0
Using processTranscode As New System.Diagnostics.Process
processTranscode.StartInfo.UseShellExecute = False
processTranscode.StartInfo.RedirectStandardOutput = True
processTranscode.StartInfo.RedirectStandardError = True
processTranscode.StartInfo.CreateNoWindow = True
processTranscode.StartInfo.WindowStyle = ProcessWindowStyle.Normal '.Hidden
processTranscode.StartInfo.FileName = targetEXE
processTranscode.StartInfo.Arguments = arguments
Try
processTranscode.Start()

Dim readLine As String = ""
Dim sErr As System.IO.StreamReader = processTranscode.StandardError()
Do While Not sErr.EndOfStream
readLine = sErr.ReadLine
If Not bMinimised Then
If readLine.Contains("frame") And readLine.Contains("fps") Then
Dim i1 As Integer = readLine.IndexOf("fps")
Dim s As String = readLine.Substring(0, i1)
s = "Transcoding " & fileName & " - " & s
Me.lblStatus.Text = s
Me.Refresh()
Application.DoEvents()
End If
End If
If processTranscode.HasExited Then Exit Do
Loop
sErr.Close()
Catch ex As Exception
Try
processTranscode.Close()
Catch ex1 As Exception
'
End Try
Return 6
End Try
killProc: If Not processTranscode.HasExited Then
processTranscode.Kill()
End If
Application.DoEvents()
iExitCode = processTranscode.ExitCode
processTranscode.Close()
End Using
Return iExitCode
End Function 'ExecuteDosCommand

regards
Malcom

Comments by malcomm (Top 11 by date)