Displaying 2 results from an estimated 2 matches for "codecperformancecomparison".
2014 Sep 22
2
Retuning compression levels
Erik de Castro Lopo wrote:
>> Currently, compression settings are as follows
>>
>> -6, -l 8 -b 4096 -m -r 6-A tukey(0.5)
>> -7, -l 8 -b 4096 -m -e -r 6-A tukey(0.5)
>> -8, -l 12 -b 4096 -m -e -r 6-A tukey(0.5)
>>
>> I suggest the following, in case my previous patch is accepted
>>
>> -6, -l 8 -b 4096 -m -r 6 -A tukey(0.5);partial_tukey(2)
2014 Sep 22
2
Retuning compression levels
...would make the decoding of -7 as CPU-intensive as -8 is
> now. Seeing that all FLAC-capable hardware that I know of has
> been decoding -8 without problems for years, there's probably no
> harm done with changing this too.
>
> Any thoughts?
From <http://www.rockbox.org/wiki/CodecPerformanceComparison>
it seems that the decoding of -8 is about 6% slower than -5. Sometimes
the difference is bigger but doesn't exceed 10%.
The only exception is "Freescale i.MX21 (454MHz ARM926EJ?-S, Fuze+)":
43x vs 35x realtime. But the decoding time is so small (4 sec vs 5 sec)
that it can be som...