[SoX-users] Add silence at the begining without re-encoding

[Cristian P. <cpr...@ho...>]

Hi,

I add silence to the start of an mp3 file correctly using "pad". The problems is that it is very slow with large files. Is there a way (similar to "-acodec copy" in ffmpeg) to just create a silence of the same bitrate of the input file and the just copy all the input data without re-encoding? That will be a matter of 1 second and have same effect and no quality loss!

Thanks a lot, SOX is great!