[MPlayer-users] Audio encoding speed?
Jack
lt at speakeasy.net
Mon Feb 14 20:13:00 CET 2005
Josef Wolf wrote:
>>>PS: I can not find an equivalent to the aq=0 option in lame's options.
>>> What does this aq=0 mean?
>>>
>>>
>>It is equal to -q 0 on the lame command line.
>>
>>
>
>I find it somewhat confusing that aq=0 corresponds to -q0 and q=0
>corresponds to yet another wired option =:). And how do I specify
>lame's -V0 option?
>
>
>
q=0. Confused yet?
>>>BTW: I noticed that the dumped mp2 file is even shorter than the
>>> resulting mp3 file (154MB vs. 166MB). So I wondered whether it is
>>> really worth to reencode the audio.
>>>
>>>
>>>
>>No, no it isn't worth it. Reencoding like this would be totally
>>pointless, and just lose more quality. If you gain some space by
>>reencoding to VBR or to a lower bitrate, that would be worth it.
>>
>>
>
>But the dumped mp2 file seems to be broken (I noted in my prevoius mail
>that mpg123 can't play it), so I guess it is worth to reencode just to get
>a non-broken file.
>
>
>
It's probably not playable because it's not in a container of any usable
sort. If you use -oac copy, you should be able to copy the (working)
original audio stream to the new file. Only if this doesn't work should
you re-encode.
-jack
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