[Asterisk-video] Video bandwidth consumption

[Sergio Garcia Murillo]

Hi Salvatore,

VLC is ok, the problem is that you are not using it for what it was 
designed for, video streaming has nothing to do with real time 
communications.

You can try to get better results by tweaking the following ffmpeg 
parameters in vlc for H263:

    * *qmin=<quantizer>* allows to set the minimum quantizer scale;
    * *qmax=<quantizer>* allows to set the maximum quantizer scale;
    * *qscale=<quantizer scale>* allows to specify a fixed quantizer
      scale for VBR encodings;
    * *i-quant-factor=<quantization factor>* allows to set the
      quantization factor of I frames, compared to P frames;

Set qmin=qmax=qscale=31 and *i-quant-factor=1 *to get the minimum 
quality possible (and minimum bandwidth). Anyway, using VLC you are 
going to get a much lower quality compared with an encoder prepared for 
CBR and RTC.

Best regards
Sergio

Salvatore Frandina escribió:
> Hi Sergio,
>
> Yes, I know the vb parameter can set the video bandwidth but it 
> doesn't work. If I change vb then I capture the packets from Wireshark 
> the total video bandwidth doesn't change. I think that there is a 
> problem with VLC.
> My question: is if possible that a video of 1.25 Mbits without 
> compression will reduced to 350 Kbits mean value with a peaks of 500 
> Kbits (H263p codec)?I think that value is too high...
>
> The video bandwidth of eyebeam, bria or ekiga is lower than VLC 
> although the softphones send animated video.
>
> Thank
> -- 
> _______________________________________
> Salvatore Frandina
> website: http://frandinas.altervista.org
> mail: salvatore.frandina at gmail.com <mailto:salvatore.frandina at gmail.com>
>
> _______________________________________
>

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