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Posted by Don M. on 07/26/06 02:24
<2privatus@comcast.net> wrote in message
news:1153871674.209937.319850@i42g2000cwa.googlegroups.com...
> fred-bloggs wrote:
> >
> > For the mp3s you already have try fixing the seek tag with vbrfix,
> > mp3trim or foobar2k.
> >
> > If that solves the problem, in future try encoding wavs from Audio
> > Cleaning Lab with Razorlame.
> >
>
> Fred,
>
> Thanks for referring me to vbrfix. I've processed my Mp3 lecture
> series -- which were encoded using VBR -- through it, and then imported
> the resulting files into iTunes. The resulting files showed play
> durations that were more reasonable (somewhere around the approximately
> 45 minute durations of each lecture). However...
>
> The problem persists: When played in iTunes, these vbrfix'ed Mp3
> lecture series files still "skip ahead" to the next file in the series,
> rather then playing themselves out to the end.
>
> Observation:
>
> When played in Windows Media Player 10 (WMP10), both the "original"
> (un[vbr]fix'ed) and the "altered" (vbrfix'ed) Mp3 play themselves out
> normally to the end of the file. However, the durations shown for
> these two files are different: The original (un[vbr]fix'ed) files show
> a longer duration than do the altered (vbrfix'ed) versions.
>
> Examples:
>
> "Original" Lect_02.mp3 duration is shown as being 45:13
> "Altered" Lect_02.mp3 duration is shown as being 43:38
>
> "Original" Lect_08.mp3 duration is shown as being 46:44
> "Altered" Lect_08.mp3 duration is shown as being 45:00
>
> BTW: The amount of audio "lost" when the files are played by iTunes
> does not correspond to the difference in these durations. By my
> reckoning, only the concluding 20 seconds of the files are "skipped
> over" as iTunes shifts from one lecture to the next in the sequence.
>
> Question:
>
> How do I set up vbrfix -- or any other Mp3 VBR ''fixer'' -- to correct
> this "skip ahead" problem when these Mp3 files are played in iTunes
> (and then, in my iPod)?
>
> Thanks,
>
> 2privatus@comcast.net
>
==========
It seems your iTunes is miscalculating duration (and not making adjustments during play)
of those VBR files. Encoding (or re-encoding) the lectures using constant bitrate should
solve the problem.
Don
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