Ok, now it’s work.
For the old version project is it ok? I tried to open one and requires a little bit of time to import but it’s fine.
I don’t understand what was the problem is the file bad? Or does this FFmpeg ruin the quality? Just to know.
I don’t understand what was the problem is the file bad?
MP3diags says it has an extra “unknown stream”.
This may have been said already, but awhile back Audacity would try to open any file named MP3, even it was actually an MP4 or something else, and it would just fail. But it would also usually open “bad” MP3s without problems (as long as the MP3 was playable).
A lot of users were running into files that weren’t really MP3s so the developers added some checks to make sure it was really an MP3, and now if it found something wrong it pops-up a Window telling you to install FFmpeg (which can open MP4 and most other formats).
But then users started running into "invalid " MP3s. They were really MP3s but they wouldn’t open. Nobody expected that many bad/invalid MP3s so now we had a new problem…
So now I think they’ve made a compromise where it can open a file that’s not really an MP3 (with FFmpeg) as well as most imperfect MP3s.
Or does this FFmpeg ruin the quality? Just to know.
It should be fine. It sounds fine, right?
MP3 is lossy compression so it throws-away data to make the file smaller (it’s “smart” and it tries to throw-sway stuff you can’t hear anyway). _De_compressing the MP3 doesn’t do any further “damage”, except Steve mentioned that FFmpeg decodes to 16-bit integer (rather than floating-point which Audacity normally uses internally).
…Integer formats (like “regular” WAV files or CDs) can’t go over 0dB, but MP3s can. That means you can get [u]clipping[/u] (distortion) if you convert to Integer. Your file occasionally goes slightly over 0dB but I doubt you’ll hear the very-slight distortion.
If you hear an MP3 compression artifact it’s usually something else (from the lossy compression), not clipping.
As part of the lossy process some peaks get a little higher and some a little lower, so if you make an MP3 from a 0dB normalized WAV file, the MP3 often goes over 0dB and it will “show red” for (potential) clipping in Audacity. (Many of my MP3s ripped from CD’s “show red”.)