[gst-devel] converting between audio formats using GStreamer

[cppb]

hi, 

I am a beginner and want to develop some apps using Python and GStreamer. 

I am using the following pipeline to convert a wav file to mp3.


   m = gst.parse_launch("filesrc location=~/music.wav ! decodebin 
! audioconvert !  lame ! filesink location=~/music.mp3")

  m.set_state(gst.STATE_PLAYING)

# the following prints a traceback 
# d = m.get_duration(gst.FORMAT_TIME)

this creates mp3 file, but it is not complete. I tried time.sleep(seconds)
call in the above code. This helped at least write some data to the mp3 file
created.

for time.sleep() call, I tried different time intervals, but still it
doesn't create the file with full data as the original.

I don't want to use time.sleep() and want to know if there is a better way
to do this. Can anyone help?

Also tried the get_duration() method but it throws an error "query failed"

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