[FFmpeg-user] ffmpeg ac-3 encoding speed

[Davor Josipovic]

On 3/09/2012 1:05, Carl Eugen Hoyos wrote:
> Davor Josipovic <davorj <at> live.com> writes:
>
>> ffmpeg -i %tmp_orig_audio% -c:a ac3 -ab 640k -q:a 0 %tmp_enc_audio%
>>
>> Now, on an Intel i3 machine using only one core, approximately 60sec of
>> this DTS stream is converted each second. It is almost as fast as the disk
>> can write and read.
>
> If you need slower encoding speed, try building with --disable-asm or
> --disable-optimizations or both.
>
> Carl Eugen
>

Yes, but then I will not use any CPU optimizations, so the quality will 
be the same.

My question is rather whether I can _improve_ quality of the resulting 
AC-3 stream by possibly reducing the encoding speed.