1
vote
1answer
933 views

Convert mp3 to wav using FFmpeg for VBR

What command should I use to convert a mp3 file to wav whose bitrate is variable. Or better how would I know whether that source audio is fixed bitrate or variable?
4
votes
1answer
563 views

What lossy audio formats are more (or less) “efficient”?

This question is related to the answers I got to this question. The bitrate-efficient format (see the question's most voted answers and their comments thereunder) would be one that assures a good ...
2
votes
1answer
1k views

Converting MP3 to AAC and outputting to stdout

ffmpeg.exe -i s.mp3 -f aac - This is the command I run but it doesn't recognize the format AAC. Requested output format 'aac' is not a suitable output format pipe:: Invalid argument However when ...
0
votes
1answer
423 views

AAC converted from MP3 (FFmpeg) results in bigger size

I'm on Windows x64 converting MP3 file to AAC using FFmpeg. I tried these commands: ffmpeg -i file.mp3 -acodec aac -strict -2 file.aac ffmpeg -i file.mp3 -c:a libvo_aacenc file.aac Both commands ...
1
vote
2answers
286 views

AAC 256kbit to MP3 320kbit conversion. I know it's lossy, but how?

Has anyone ever transcoded music from a high-quality aac to an mp3 (or vice-versa). The internet is full of people who say this should never be done, but apart from the theoretical standpoint that you ...
8
votes
1answer
13k views

FFmpeg command to convert MP3 to AAC

I can issue this command: ffmpeg -i input.mp3 -acodec alac -ab 128k -ar 48000 -ac 2 -y output.m4a to create a m4a file. But when I issue this command ffmpeg -i input.mp3 -acodec alac -ab 128k ...
0
votes
3answers
615 views

What tools similar to Tag&Rename exist?

I've got a media library consisting of a set of roughly 8000 MP3 (purchased from Amazon MP3), AAC (purchased from the iTunes Music Store - Unencrypted), and FLAC (ripped from my own physical disks) ...
1
vote
1answer
450 views

Where can I get AA or AAX file format?

I need to test a AA and AAX file format for iphone testing. I tried google searching with filetype:aax. But I could't find it easily. Where do I find these samples?
2
votes
1answer
130 views

Does any economically-feasible publicly available software compare audio files to determine if they are dupes?

In the vein of this question http://unix.stackexchange.com/questions/3037/is-there-an-easy-way-to-replace-duplicate-files-with-hardlinks is there any software that will automatically parse a library ...
1
vote
3answers
6k views

How does iTunes 128 kbps AAC compares with LAME MP3 (-V 2, or -preset fast standard)?

I've been ripping my CD's to MP3 using LAME, with -preset fast standar (or -V 2), since audio listening tests find that LAME with these settings is transparent and as good as top quality Ogg Vorbis or ...
3
votes
1answer
5k views

How to verify FLAC files against the AccurateRip database?

I've been ripping my CD's to CUE+FLAC so that I get image files that allow me to replicate the actual CD. This serves me as a backup and as an easy access to the "media" if I need to re-rip the CD's ...
0
votes
1answer
611 views

Automatic adaptive gain normalization

How may I normalize a (voice) audio mp3 or aac file with no loss, having the gain rised as much as possible (mitigating distortion using a compressor), so in a long conversation people that speak ...
2
votes
5answers
11k views

iTunes: Burn an MP3 CD when I only have AAC files?

Is there a way to burn an MP3 CD when iTunes only contains (unprotected) AAC files purchased from the iTunes store? There isn't an option directly in iTunes to convert AAC -> MP3 like there is for ...
2
votes
2answers
5k views

AAC Sample Rate and Bit Rate for High Quality Audio?

What are the AAC Sample Rate and Bit Rate settings to set in order to encode an audio track with a quality comparable to MP3 320kbps? I need to backup a DVD movie, the default settings for AAC are ...
4
votes
3answers
353 views

How to convert a library of DRM'd iTunes AAC songs to unprotected mp3s for free?

How to convert a library of DRM'd iTunes ACC songs to unprotected mp3s for free?
12
votes
9answers
51k views

What is the best file format/bit rate to rip tracks from a CD into iTunes? [closed]

I know it sounds subjective but its not meant to be. I am very new to ripping CD's using iTunes, and I'm confused over the different formats available. I have read Wikipedia regarding the AAC and ...