[Gambas-user] Shell comand + FFMPEG from gambas how to
Martín
mbelmonte at belmotek.net
Fri Oct 20 23:44:33 CEST 2023
Hi,
If I do this in the terminal it works:
ffmpeg -f pulse -i alsa_output.BLABLABLA.analog-stereo.monitor -i
<(arecord -f CD) -filter_complex amix -acodec libmp3lame output.mp3
But if I do the same although Shell inside the gamabs code it doesn't work.
What I'm doing wrong? here is the sample code. The idea behind is record
2 audio tracks at the same time one for the micro and other for the
internal audio output.
Private hMicro As Process
Private hSystem As Process
Public Sub bRecord_Click()
If bRecord.Value Then
Record()
Else
Try hMicro.Kill
Try hSystem.Kill
Endif
End
Private Sub Record()
Dim sBase As String
Dim sMicro As String
Dim sSystem As String
sBase = Format(Now(), "yyyy_mm_dd_hhnnss")
sMicro = "ffmpeg -f pulse -i alsa_input.BLABLABLA.analog-stereo
-acodec libmp3lame " & sBase & "_micro.mp3"
sSystem = "ffmpeg -f pulse -i
alsa_output.BLABLABLA.analog-stereo.monitor -i <(arecord -f CD)
-filter_complex amix -acodec libmp3lame " & sBase & "_system.mp3"
hMicro = Shell sMicro For Read As "RMicro"
hSystem = Shell sSystem For Read As "RSystem"
End
I was thinking to sent the Shell command in a direct way, without start
a process first, but how I can kill the process, in the good way,
later? Actually I use "killall ffmpeg"
Second point: it is possible sent 2 commands with ffmpeg? because I sent
the first one and then the second one never occur.
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