RE: [Swftools-common] How to add audio to existing swf which has been created with vnc2swf?

[Kevin Minney]

Matthias,

thanks for your help, I will have to install Cygwin as I don't have this
installed at the moment. I checked the Cygwin website and it say that
the latest is 1.5.09, where do I get >= 1.5.10 from?

I will also have to install swftools as I will need to in order to have
access to swfdump. Is the install on a Linux bix straightforward? (I had
lots of problem installing ming0.2a-2, I gave up trying to get the
makefile version to install, in the end I found a rpm package that
worked for me). I am not a developer, just and end user and I find these
install processes very confusing/difficult.


I am concerned about the performance of vnc2swf when recording the
desktop on my laptop, so I will probably end up using the swfdump
approach and add audio later. But first I would like to give the live
audio streaming approach a try but I suspect my laptop is not going to
be fast enough to do everything.

Some notes on my performance concerns:

Equipment:

Laptop (W2000, PIII 800 mhz, 128M ram)
Linux box (IBM server, dual 2.4G Xeon, 4G ram). RH 7.2 with 2.4.19
kernel *
No monitor on my Linux box, I use my laptop to view and control the
linux box using VNC.

* I think this is a modified kernel which enables me to run processes up
to around 3.5G in size.



Setup 1:

vnc2swf running on my linux box. I connect to my W2000 laptop and record
it's desktop. When I move my mouse around the screen on my laptop the
movement is not smooth, sometimes the mouse movement freezes for a
fraction of a second giving a jerky movement.


Setup 2:
vnc2swf running on my linux box. Record a VNC server on the same Linux
box, run vnc2swf with the -nowindow option. (I use the -nowin option or
I get many vnc2swf record screens due to it going into some sort of
infinite loop, displaying on the same VNC screen which it is recording).


I will let you know how I get on,

regards,

Kevin





-----Original Message-----
From: Matthias Kramm [mailto:address@hidden 
Sent: Sunday, May 16, 2004 8:08 AM
To: Kevin Minney
Cc: address@hidden
Subject: Re: [Swftools-common] How to add audio to existing swf which
has been created with vnc2swf?

On Fri, May 14, 2004 at 12:49:44PM -0700, Kevin Minney wrote:
> However, I now need to add audio to my swf. I cannot do a live audio
> recording as my Linux box is located some 200ft away from my office.
> (Microphone lead won't reach!). So I am planning to record the audio
to
> mp3 on my Windows2000 laptop at a later date and add then audio to the
> swf which I recorded using vnc2swf.

If you have a Cygwin installation (>= 1.5.10) on your Windows box,
you should also be able to do something like

(Windows side)
    nc linuxserver 999 < /dev/dsp

(Linux side) 
    mkfifo pipe.mp3
    nc -l -p 999 | lame -r -s 44.1 -bitwidth 16 -b 160 - pipe.mp3
    vnc2swf -soundfile pipe.mp3

According to the vnc2swf documentation, you will need some
ming-input-stream.patch for this, though.

If the above does not work, you can (as you suggested) also add the
audio at a later date with swftools.
If you have the audio in a file called audio.wav, and the vnc2swf
recording in video.swf, do a

    wav2swf `swfdump -r video.swf` audio.wav -o audio.swf
    swfcombine -Tm video.swf audio.swf -o audio_plus_video.swf

> BTW I did try 'vnc2swf -soundfile audio.mp3 out.swf' to add some
> background audio while I recorded my vnc desktop but this is crashing
> with a segmentation violation for some reason,

This is something which should be sent to the vnc2swf maintainer.

Greetings

Matthias