Will we ever see an option where we can encode a song to mp3 format and have it be lossless?Since mp3 format is one of the most wildly used formats I'm surprised there isn't an option for lossless comprerssion. It sucks having only ALAC as the only option for lossless compression for the iPod.
the battery life, stability and possibility of bricking my ipod kinda turn me away from rockbox
Quote from: ge0rgieee on 02 March, 2008, 07:30:23 PMWill we ever see an option where we can encode a song to mp3 format and have it be lossless?Since mp3 format is one of the most wildly used formats I'm surprised there isn't an option for lossless comprerssion. It sucks having only ALAC as the only option for lossless compression for the iPod.No, that is not possible.
Is there a supernatural force that stops the programmers of LAME from putting in a switch that does this?
No, just the small problem that the resulting file wouldn't be an mp3 anymore (and definitely wouldn't play in your iPod).
Why couldn't it be an mp3? Can one not turn a wav file into an mp3 without making the mp3 lossy? Just make it into the mp3 file structure?
...the resulting file wouldn't be an mp3 anymore...
I also like the Lossless-MP3 idea, perhaps the introduction of a hybrid one.
The reason that wavpack hybrid works is that its lossy file is a very close approximation to the waveform of the original, so the difference between the original and the lossy is a bunch of very small values that compress very well.Lossy codecs like mp3, on the other hand, don't necessarily produce something whose waveform is close to the original, only that it sounds close to the original. The difference between the waveforms can be quite large, and therefore not very compressible. [link to quote]
Yes! It's called MPEG (The Motion Pictures Expert Group). They control the MP3 spec.* They could change the spec, but all MP3 players would require new software/firmware in order to play the new files.
Okay so the original question, why not a lossless mp3, is not practical. But let's also say that if it were practical then there could be some real benefits to it. If people did not have to replace any of their existing hardware or learn new tools or terminology, but simply, as storage became cheaper and cheaper, start getting and encoding mp3's that did not compromise the original sound in the slightest. This would be a painless transition.
Of course, in an ideal world music would simply be piped into our heads without an physical medium at all.
Lossless formats are nothing but data compressors just like ZIP/RAR.
Any encoder will compress silence losslessly.