Re: Merge and pipe channel assignment madness

Bouke / VideoToolShed <[email protected]> Wed, 6 Sep 2017 15:38:34 +0200

Newsgroups	gmane.comp.audio.sox
Message-ID	<[email protected]>

> On 05 Sep 2017, at 17:17, Jan Stary <[email protected]> wrote:
> 
> On Sep 01 23:24:20, [email protected] wrote:
>> Hi guys,
>> Trying to merge multiple mono and poly Wave files while piping (to add custom padding to each input file.)
>> Whatever I do, on input poly files the output channel order is totally unpredictable.
>> 
>> I’m using something like sox -M “| sox 3ch.wav -p pad 1” “|sox 5ch.wav” -b 24 output.wav
>> I would expect to get the same order of output as in the order of the input / pipe, but that does not happen.
> 
> I cannot reproduce this behaviour.
> 
Hi Jan,
> 
> What version of SoX are you using?
> Does it also happen with the current version

Hi Jan,
If you like, try this:
Y:\sox-14-4-2\sox -M "| Y:\sox-14-4-2\sox J:\Torsten\tst\T72.WAV -p pad 0" "| Y:\sox-14-4-2\sox J:\Torsten\tst\T72.WAV -p pad 1" -b 24 J:\Torsten\tst\output.wav

The file has ch1 (a bit) static, ch2 silence, ch3 voice
On merge, the input tracks are reversed (but other files behave random.)
File can be downloaded here:
https://we.tl/4XNMXikv0J <https://we.tl/4XNMXikv0J>

Thx!
Bouke


> Can you please upload two of your multichannel files
> so that I can reproduce exactly what you are doing?
> 
> 	Jan
> 
> 
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