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Martin Leese wrote:<br>
<blockquote
id="mid_CAAzqGd90Au-nj6tfkmGRrDetr6sfkg=_aaTmpHvsRtr1UEGH8A_mail_gmail_com"
cite="mid:CAAzqGd90Au-nj6tfkmGRrDetr6sfkg=_aaTmpHvsRtr1UEGH8A@mail.gmail.com"
type="cite">
<pre wrap=""><!---->
At:
<a class="moz-txt-link-freetext"
href="http://flac.sourceforge.net/documentation_tools_flac.html#flac_options_exhaustive_model_search">http://flac.sourceforge.net/documentation_tools_flac.html#flac_options_exhaustive_model_search</a>
it states, "If the max LPC order is high this
can significantly increase the encode time."
This suggest that if the max LPC order is low
then using -e will not be slow.
</pre>
</blockquote>
----<br>
That brings up another question then... What is 'hi' (v. low?)...<br>
<br>
The doc on -l makes it look like 12 is the max for "subset streams":<br>
<br>
-l #, --max-lpc-order=#<br>
Specifies the maximum LPC order. This number must be
<= 32. For<br>
Subset streams, it must be <=12 if the sample rate
is <=48kHz.<br>
If 0, the encoder will not attempt generic linear
prediction,<br>
and use only fixed predictors. Using fixed predictors is
faster<br>
but usually results in files being 5-10% larger.<br>
---<br>
What's a subset stream? Under "--lax", it says:<br>
--lax Allow encoder to generate non-Subset files. The resulting
FLAC<br>
file may not be streamable or might have trouble being
played in<br>
all players (especially hardware devices), so you
should only<br>
use this option in combination with custom encoding
options<br>
meant for archival.<br>
===<br>
There -- it sounds like "subset" refers to the subset of "flac
encodings" <br>
that is "streamable" and/or work on all(or most) players... Sorta like
<br>
320Kbps being the max rate for "MP3's that conform to the standard"...
<br>
<br>
If that's the case then the highest -l value one can 'portably' use
would<br>
be 12? FWIW, I've tried 16 & 12 and noticed no difference in
exhaustive's <br>
execution time.<br>
<br>
Another "nit" I noticed, from
<a class="moz-txt-link-freetext"
href="http://flac.sourceforge.net/documentation_format_overview.html">http://flac.sourceforge.net/documentation_format_overview.html</a><br>
in the inter-channel-decorrelation section -- it mentions -m vs. <br>
-M, where -m always uses mid+side channel whether it is bigger or not,<br>
while -M adaptively uses mid+side or stereo depending on which is
better.<br>
<br>
Why would flac levels 7 and 8 use -m (always when -M allows adaptive
encoding<br>
based on which is better?<br>
<br>
<br>
<br>
<br>
<br>
<br>
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