Dear Sox list, I am stumbling over a (known) problem: I am trying to concatenate many audio files with sox "*.wav" out.wav and after some time am getting the error message sox FAIL formats: can’t open input file ‘whatever.wav’ : Too many open files I have found other people's postings about the same issue, as eg http://sox.10957.n7.nabble.com/Sox-Too-many-open-files-concatenating-from-playlists-with-a-large-number-of-entries-td5117.html The max number of files to be concatenated this way seems to vary in between operating systems. Or does anyone know exact numbers, or how to determine the maximum number on a given OS? Now I understand that sox is keeping them all opened when concatenating them, which might be necessary in other cases, as when trying to normalize them all to a common level. Sadly this seems to impose the described limit. Or is there another reason why all files have to be kept open? I tried to work around this by recursively concatenating each input file to a common (growing) output file using a simple bash until loop. The performance penalty of this is enormous, as the same output file has to be opened, read and written each time again. I am curious what a possible workaround could be, other than dividing above task between multiple calls of sox, each with a reduced number of files. Thank you for your suggestions and comments, Peter ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Sox-users mailing list Sox-users@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/sox-users
