[x264-devel] Re: Rif: Re: JM 9.6 vs. x264 rev 228: results

[Tuukka Toivonen]

On Fri, 20 May 2005, Tom Jacobs wrote:

> ive had a look at your scripts for doing the graphs and im alittle stuck.

No wonder. The script is absolutely horrible; I wouldn't be surprised
if writing a new one would be easier than understanding plot.sh ...

> my problem is im not sure how to edit plot.sh to take into account these
> changes. also when have changed plot.sh im not sure what the inputs i need
> to pass to it.

I use plot.sh like this:

./plot.sh "" "" "o0r0-250-0-2-all-5 o6r1-250-0-2-all-5"

when I have file names like this

x264-coastguard-352-288-o5r0-250-0-1-all-5-20.log

The first parameter is the set of test sequences. I always leave it
empty (""), and the script will then determine automatically what log files
are available and use all of them.

The second parameter is set of JM encoding methods, since we
test x264, we can leave it empty too.

The last parameter is the set of x264 encoding methods, starting
after the image size "...352-288-" and ending before QP
parameter value, which is the last number "...-20.log".

So, after we remove the prefix and postfix from the example log filename,
we get "o5r0-250-0-1-all-5" which is the string describing the "coding 
method" part of the log file filename.

You should move qp to last, something like
   filename-width-height--frame-reframe-analyse-slice-qp.log
and then run plot.sh like

./plot.sh "" "" "-frame-reframe-analyse-slice -frame-reframe-analyse-slice"

(replace frame, reframe, analyse, slice with their actual values)

Next I should describe how plot.sh works; but I must leave now so I'll left 
it to next time.

Anyway, shortly:
the loop "for met in $JMMETS; do" loops over files encoded with JM;
you could probably remove that loop completely.
$qpva = QP value
$met = coding method
$seq = video sequence...

(must go now. bye)

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