Re: [Vnc2swf-users] pyvnc2swf sound recording using pymedia

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

David Fraser wrote:
> 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
>
> PS Not subscribed so please CC me on replies
>   
Have updated the patch so it snips the zeroes that pymedia mistakenly
puts at the start of mp3 files, so it now records directly to mp3.
Also added a -m option which is a bit hacky and needs fixing up but
automatically runs edit.py to merge the mp3 and the swf, making a fully
automatic process

Regards
David