[vlc] Re: measuring encoding delay

[Mark Moriarty]

Interesting question.  By "encoding time" do you want to measure the full
time from when a frame is first sent to be encoded, to the point where it
has been encapsulated and is ready for transmission?
Might want to try a debug build, calls to the low-level time functions, let
it run for say 1000 frames, then take the average. 

-----Original Message-----
From: vlc-bounce at videolan.org [mailto:vlc-bounce at videolan.org] On Behalf Of
Marcelo Manzato
Sent: Tuesday, April 04, 2006 3:46 PM
To: vlc at videolan.org
Subject: [vlc] Re: measuring encoding delay

Hi Simon, thanks for your answer!

--- Simon Hailstone <simon.hailstone at gmail.com> wrote:

> For a really simple experimental approach, and if millisecond accuracy 
> isn't a priority, how about pointing your webcam at a clock?  View the 
> resulting stream on another PC, and note the difference between 
> "wall-time" and the time displayed on the stream-receiving PC.

I have already thought about that, however, in this case I will be measuring
the transmission and the decoding time as well. I want a way to measure just
the encoding...
 
> Alternatively, start up vlc, begin
> encoding/streaming, and use
> Ethereal to observe the time that elapses between initialisation and 
> the generation of the first packet with video in it's payload...

It seems to be a good solution, however, I didn´t understand how I will
capture the initialisation time... Have you thought about that?

Regards
Marcelo Manzato



		
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