Re: [Vnc2swf-users] How to set FLV meta data (was Re: About FLV output.)

[Oscar U. <osc...@pr...>]

Another question, is there a way to get a png image preview, or the first image frame of the flv? 

Thanks,
OSC

PS Great info Amigo, thanks... :D I will try and report back.

> ----- Original Message -----
> From: "The Amigo" <the...@gm...>
> To: "General discussion about vnc2swf" <vnc...@li...>
> Subject: Re: [Vnc2swf-users] How to set FLV meta data (was Re: About FLV	output.)
> Date: Fri, 3 Apr 2009 15:46:31 -0500
> 
> 
> I used pyvnc2swf for a bit, but found that it took far too much CPU time.
> Instead, here's what I do now:
> 
> 1) Use this patched vncrec: http://aur.archlinux.org/packages.php?ID=16265
> In addition to simply recording vnc sessions to a log file, it can convert
> the recordings to YUV4MPEG (the twibright patch) on stdout (my patch).
> 
> 2) Use ffmpeg to read the YUV4MPEG stream and write an .flv
> 
> A couple of caveats however:
>   - vncrec needs an X display (use Xvfb to create a virtual one, but make
> sure it's at least as large as your video)
>   - flashsv is the lossless video codec that will generally produce smaller
> files for screen recordings while maintaining perfect quality
>   - if your ffmpeg doesn't have flashsv support and you have to compile from
> source, install zlib-devel
>   - scaling down the video size with ffmpeg will often result in a larger
> file size (due to the added anti-aliasing), for web-based playback, you can
> save bandwidth by having a swf player scale the video down.
> 
> --
> http://theamigo.blogspot.com
> 
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