[pve-devel] novnc report

Alexandre DERUMIER aderumier at odiso.com
Thu Aug 2 11:12:01 CEST 2012

>> Does it work when you view a video from youtube.com? 
Didn't have tried, but why do we want view a video in proxmox console ?
Isn't it mainly for administrative tasks ?

I'm not sure vnc protocol is fast enough for true video rendering. 
spice should be better for this task.(in vdi environnement)

>>AFAIK the jpeg compression is far better? 
but jpeg is not a vnc protocol ? (but is used inside these prococol)
Like Zlib encoding, Tight encoding uses zlib library to compress the pixel data, but it pre-processes data to maximize compression ratios, and to minimize CPU usage on compression. Also, JPEG compression may be used to encode color-rich screen areas (see the description of -quality and -nojpeg options above). Tight encoding is usually the best choice for low-bandwidth network environments (e.g. slow modem connections)."

----- Mail original ----- 

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Alexandre DERUMIER" <aderumier at odiso.com>, pve-devel at pve.proxmox.com 
Envoyé: Jeudi 2 Août 2012 10:32:32 
Objet: RE: [pve-devel] novnc report 

> using last chrome and firefox , on archlinux. 
> Performance is very good for me, using adsl 6Mb/s.(tested with 
> win2003,win2008, and linux consoles) 
> Maybe a little slower than java, but very usable. 

Does it work when you view a video from youtube.com? 

> I don't know how to choose vnc compression protocol ? in novnc ? in qemu ? 
> or is best compression choose automaticly ? 
> (I would like to be sure to use tight protocol) 

AFAIK the jpeg compression is far better? 




Alexandre D e rumier 

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