Audacity Forum

FR = "function request"? If Audacity writes a MP3 file with ID3 meta-data, it should leave some spare space, ideally variable, or otherwise for instance 2000 bytes. Presently, Audacity allocates precisely the amount of space needed, leaving no spare space. Typically applications writing MP3 files le...

I am using Audacity 2.0.5 on Windows XP. Xp may no longer be supported by Microsoft, but the problem does not seem to be in the operating system, since other (MP3) files are processed without problems by Audacity. I just did a full scan of the file, which reveals that it consists of 5783 frames of 5...

Audacity is very helpful to edit MP3 files. But for one particular file, Audacity gets into a loop when reading the file. When the progress bar is at the end, CPU load stays at 100%, and Audacity does not respond. so I have to kill it (using Windows facilities). The file plays OK, its ID3 header app...

Yes indeeded that is how it works. Applications that read ID3 meta-data must stop when either the end of the meta-data area is reached (if it is fully used), or when a binary zero frame ID is found (if it is not fully used). The end of the meta-data area (not the actual end of the meta-data if spare...

As an example: I just ripped a CD using the RealAudio player. For all files, it reserves 4086 bytes for ID3 meta-data, and it uses a little more than 64% of that space to store its ID3 frames, leaving about 1450 bytes for future use. I have not seen an option to specify the amout of spare space. I o...

I used the RealAudio player to convert my CDs into MP3 files. AFAIK, It adds automatically some spare space. I don't know the exact number but I guess a couple of thousands bytes. All the MP3 files I got through various sources either contain no ID3 information at all (and no ID3 header), or some sp...

Let me say first that I do not complain. Firstly, I wondered whether the function exists, and apparently the answer is no. Secondly, I made a suggestion for improvement. In my perception, the debate how much time it takes to rewrite a MP3 file misses the point. I repeat: having spare bytes in the ID...

Thansk for the quick reply. Am I correct to note that you implicitly confirm that the function I described is not currently in Audacity? Tha answer to your question is that I wrote my own software for that purpose, written in C++. I am surprised that you are able to edit ID3 data and expand ID3 spac...

ID3 meta-data (version 2 and higher) in MP3 files is usually forllowed by a number of spare bytes (typically hundreds to thousands) that allow the ID3 meta-data to be edited without a complete re-write of the MP3 file (which is time-comsuming for larger MP3 files). Audacity writes MP3 files with exa...