[x265] Dynamic rate control

Ralf Globisch rglobisch at csir.co.za
Tue Oct 13 10:51:44 CEST 2015


Mario, thanks for the reply.

> So you are using a client-to-server feedback control, trying to control  
> the video bitrate based on the download speed, in a real-time encode  
> scenario?

Yes, exactly.
> The usual approach I knew so far was providing several video streams with  
> different setups and switching between them (like in MPEG DASH, as used by  
> YouTube for HD video features).

I am familiar with the bitstream switching approach, but am looking at rate control 
in e.g. video conferencing/WebRTC scenarios where this is not really an option. 
Perhaps the scalable extension is a better fit for such use cases. 
Are there any plans for implementing SHVC in x265?

> I don't know the interna, but I could imagine that reconfiguring the  
> bitrate control will have a quite slow effect, probably only from the next  
> GOP on, when it comes to effect at all. I wonder if you may have to force  
> a kind of encoder reset after reconfiguring... Just a thought.

Ok, thanks, I was hoping there might be another way as resetting an encoder 
when adjusting to network congestion will likely have an adverse effect.



-- 
This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. 
The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html.

This message has been scanned for viruses and dangerous content by MailScanner, 
and is believed to be clean.

Please consider the environment before printing this email.



More information about the x265-devel mailing list