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Gapless MP3s for portable player needed, Any advice?
budgie
post Apr 8 2003, 11:48
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Is there any trick to make gapless MP3s for hardware player? I want to avoid having just one big file... but when there is no other solution, is there any possibility to make kind of cue-sheet compatible with hardware (portable) players to see (and jump to) the tracks inside?
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tigre
post Apr 8 2003, 17:34
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Well, I've just tried with a live recording:
I encoded two tracks to 1 mp3 file, split it with mp3directcut, decoded both resulting mp3s to wav and joined them with CEP. The resulting wav had a remaining gap of ~ 200 0 samples followed by ~ 200 fade-in like samples. This 1/100 sec. "sound degradation" results in a slightly noticable "tic" which is easy to notice if you know where it is. I'd say someone who don't know about the problem wouldn't notice it (in a typical "portable listening" situation) and if (s)he does, it's far from annoying (especially if it happens while the audience applauds). I think chosing the "cut points" properly (maybe someone else here can tell how to - I don't know) can result in even better results than my quick test.

So far so good - One (possible) problem remains: The portable players I know (old and/or cheap ones) introduce additional gaps between songs, so I hope you have a decent one.

Using mp3directcut creates files that have no header (and no tags). This makes player show wrong time information (if you use VBR). It can be corrected AFAIK (VBRfix ...) but it's possible that this makes the Gaps longer again on your portable player (IIRC VBR headers are some kind of "abused" frames).

This post has been edited by tigre: Apr 8 2003, 17:36


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