How much to compress files?

Question

Data archiving

I have about 100 GB of files, 80% MP3, 15% MP4, 5% PDF. How to compress them as much as possible (zaahivirovat). To, at least, about 50 GB became. I am ready to wait half a day until it is archived, this is not a problem for me, but it is necessary to compress at least half, and even more is better. WinRAR can't cope with the maximum settings, it compresses only by 2-3%.

Answer 1

Read the article:
https://tproger.ru/translations/how-file-compressi...
juliapanova.ru/blog/how-to-reduce-mp3-file-size
All files you want to archive are already compressed (so winrar coped only by 2-3%)
If there is an urgent need to reduce the size, then this is lossy compression

Answer 2

Media is usually already compressed by a codec and almost does not lend itself to an additional one. You can transcode media at a lower bitrate, but the quality will suffer.

Answer 3

In addition to other answers,
when it comes to archiving audio and video files, it doesn't seem like those files are being listened to/watched much. And in this case, they can be thrown into cloud storage for a small amount.