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Subject: Re: Trimming an MP3 file

Re: Trimming an MP3 file

From: Chris Holt <amiga2k_at_cox.net>
Date: Fri, 20 Jun 2003 20:28:08 -0400

On Sat, 21 Jun 2003 01:09:17 +0200, Linus Nielsen Feltzing wrote:
>Johan Vromans wrote:
>>So I did. Removed two frames from the start. And this is what I get:
>>
>>Time: | | | | | (tick = 50ms) Original:
>>----------abcdefghijklmnopqrstuvwzyz...... New:
>>------+hijklmnopqrstuvwzyz......
>>
>>There are 50ms gone, but not the first.
>
>How is the file encoded? Is it VBR or CBR? What samplerate/bitrate?
>
>If you use 44100kHz, each frame is about 26 milliseconds. It looks like
>the first frame in your new stream is muted by the MP3 decoder, probably
> because it contains data that depends on the previous frame (the bit
>reservoir) that you cut out. Which decoder do you use?
>
>Linus

If I could add this excellent FAQ to your answer, I think Johan might
find it very enlightening. Especially the first three questions.

http://lame.sourceforge.net/tech-FAQ.txt

Chris
Received on 2003-06-21

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