#11 blurred picture

I use libfame for encoding pictures from a frame grabber...

Since I updated from a specific CVS version of libfame
(I do not remember the date; somewhen in 2003, I think)
to 0.9.1/CVS the changed areas of the picture are not
updated correctly (they just get blurred rather badly;
but there seems to be some comparison to the preceeding
frame).

I use the standard parameters from fame.h with "A" and
or "IP".
I tried several qualities.

If necessary I can provide source code and example
pictures.

Did something change?
What should I do?

-Arne

[Anonymous]

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I did some tests. Here are the results:

1. It is not an compiler-optimization (-O) issue.

2. It is not an para.quality issue.

3. It cannot be solved by setting para.search_range to
different values than 0.

4. It looks like the granularity (search range?) is bigger
now, so that small changes (like moving lips when speaking)
are not detected. Somehow the adaptive search range feature
might be out of order in 0.9.1?

5. I tried all three "motion" methods without success.
"motion/none" looks worst, I think.

6. I tried coding "I", which produces very good quality, but
huge bit rate... :-))

7. Now I use a "work around": coding "IPPPPPPP", which
produces quite small files and quite good quality...

I would be glad, if we could reduce this "granularity" somehow.

Thanks.

-Arne