[Vnc2swf-users] pyvnc2swf sound recording using pymedia

[David F. <da...@sj...>]

Hi

Thanks for pyvnc2swf! A great program...

I've written an extension that enables recording sound alongside the
screen capture. It uses the pymedia library for the recording
This is similar to using the -S option, but it does it in-process using
python code.
I'm having a little trouble getting pymedia to record mp3 directly so at
the moment it records mp2,  (I've sent a mail to the pymedia list -
basically the mp3 files produced don't have valid headers, although
passing them through lame fixes them up which is what I do with the mp2
anyway)
Once that is fixed it should make it much simpler to produce a combined file

I've attached a diff to vnc2swf.py and the new file record_sound.py. The
extra dependencies are on pymedia (I used 1.3.5.0) and the builtin
threading module
The recording is started in a separate thread and gets stopped in a
similar way to the subprocess getting stopped (it uses the same interface)
I added a new option -a filename.mp2 for the recording

The diffs are to pyvnc2swf 0.8.2

To convert the audio and combine it I run as follows

python vnc2swf.py -n -o recording.swf -a recording.mp2 vnchost
lame recording.mp2 recording.mp3
python edit.py -o mixed.swf -a recording.mp3 -S 2.5s recording.swf

(Using either this method or arecord, I always find I have to cut a few
seconds off the start of the recording. Since it's consistent, it makes
the process automatic).

I've been reading around the web and it seems having this ability
incorporated within pyvnc2swf would make it more useful for a lot of
people - there doesn't seem to be an open source tool out there that
handles recording audio alongside screen captures nicely, so I hope this
is suitable for inclusion

Regards
David

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