On Fri, Feb 13, 2015 at 18:55:53 +0100, Szabolcs Illés wrote: > I just want to join two mp3 files together but some of the files > speed would be different and create an other file called result mp3.
That is a very confusing text. Assuming you want to concatenate the two audio files (i.e. add their content after one another), you should look at the concat filter: https://trac.ffmpeg.org/wiki/Concatenate#filter and add the atempo filter to the filter chain (atempo=0.5): https://ffmpeg.org/ffmpeg-filters.html#atempo Cheers, Moritz _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
