![]() ![]() To compress it, you need to reduce the amount of data. ![]() Any video consists of many static pictures that replace each other every second during playback. It works through two different types of compression: lossy and lossless. There's a higher probability similarities will be found in this case. Compression involves packing the information of a file into a smaller space. By first turning multiple files in to one, larger file, and compressing that larger file, the compression algorithm can look for similarities across all the files. That doesn't mean you can't build archives out of MP3 files, it just means you have to be smarter about archiving.īundling together multiple MP3 files and compressing them en masse is a good strategy for eeking out a little more space saving. There isn't much there the algorithm can work with, so the file sizes stay about the same. When you combine those two facts: that your MP3 data has already been unique-ified by an audio compression algorithm, and that zip compression is looking for commonalities to put in to a dictionary to reduce the file size, you can see why compression an MP3 file doesn't get you much. That's a bit of a naïve explanation, but should suffice to give you enough understanding to figure out what's going on here. In the case of the zip format it's generally based on DEFLATE (though not always, but that's the most popular compression approach), a method for reducing the data size in a file that relies on finding repeated data blocks and replacing them with a much shorter blocks that can be used to look up the longer block in a common dictionary. Which brings us to how some of these long running compression algorithms work. Reduce file size of MP3 files, just select the MP3 audio file and click the upload button. It's a different approach than compression used in tools like zip and rar, but it the end result is mostly the same: you have less data in the file and what you have is less regular, less repeating. Compress MP3 audio files online for free. It's compressed using an algorithm that takes in to account audio data, stripping out the audio data that the algorithm believes to be beyond perception to the average human being. As others have pointed out: MP3 data is already data that's been compressed.
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