Re: Using sox as an alternative to mp3wrap to losslessly concat a dir full of mp3s?
Måns Rullgård <[email protected]>
| Newsgroups | gmane.comp.audio.sox |
|---|---|
| Message-ID | <[email protected]> |
Jeremy Nicoll - ml sox users <[email protected]> writes: > On 2017-07-18 21:52, Jonathan H wrote: >> I wanted to combine all mp3 files into one in each directory using >> Ubuntu command line. >> >> I started using a thing called MP3Wrap >> (https://sourceforge.net/projects/mp3wrap/) >> >> It was as simple as >> >> mp3wrap -v "wrapped.mp3" ./*.mp3 >> >> except it turns out to horribly break id3 tags, doesn't recognise vbr >> properly etc. >> >> Is there are way of losslessly concatenating mp3 files with sox, or is >> it a job for another tool? >> >> I know about "--combine concatenate", but that seems to re-compress >> the files. >> >> (The ability to unwrap the combined mp3 into individual files isn't a >> requirement, but it would be a nice thing if possible!) > > This last bit worries me. I don't see how that would be possible > unless some sort of marker was placed between the n'th and (n+1)'th > file. But then, it'd cause some sort of horrible sound when you > played the file... if indeed you ever intend to play such a file... It could be done by wrapping all the files in an MP4 container with a suitable edit list. > If you just want the binary content merged into one long file, surely > a normal file copy/append would do? Or you could zip the set of files > into one file. MP3 streams can be simply concatenated, but first you must remove any ID3 tags and VBR indexes (Xing header). I suppose that's what mp3wrap does. -- Måns Rullgård ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot