Re: Adding a padding byte to MP3 frames

Hello Christopher,

to correct padding issues, I recommend you to use the mp3packer tool.

http://wiki.hydrogenaudio.org/index.php?title=MP3packer

Ciao Robert

Am 05.09.2013, 19:01 Uhr, schrieb Christopher Nice  
<[email protected]>:

> Short version: Is the padding byte that gets added to some MP3 frames  
> actually padding (e.g. not important to playback), or is it audio data?  
> Can a padding byte be added to the correct frames of a file not  
> originally containing them?
>
> Here's the long version:
>
> My company has a large number of audio files we are trying to play in  
> the browser. We have found that some browsers do not seek to the correct  
> location, and the seek error is larger the farther the browser seeks  
> into the file. I found that re-encoding the file using the same bitrate,  
> sample frequency and so on using LAME fixes the seek issue.
>
> I have determined that this issue is caused because the MP3 encoder our  
> company is using does not add the padding byte at all, whereas LAME adds  
> it to the correct frames. I'm hoping to correct our files without  
> re-encoding by adding the padding bytes. I made one attempt to fix our  
> files by setting the padding bit in the header and adding a byte to the  
> end of the correct MP3 frames, but this garbles the file. Is there more  
> to it than that? Is what I'm trying to do even possible?
>
> Thanks for your time,
> Christopher

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