[FFmpeg-user] Creating surround sound from mono wav files

CherylJosie exwyeorzee at yahoo.com
Mon Dec 24 01:22:38 EET 2018

Yes thanks found a helpful site and got that far just after posting but I found the info on number of channels online not in the ffmpeg manual. I wasn't even sure what to look for so couldn't search the manual with a direct query.

I'm trying to do 7.0 but it's generating 6.1. I'll keep looking for the channel configuration instruction too i guess. I could maybe add a blank LFE if I knew the syntax. Syntax seems different for avlib than for ffmpeg and amerge is an avlib function apparently?
Sorry really new at this av processing. Thanks again for the tip. I'll keep looking. Getting there.
      From: Paul B Mahol <onemda at gmail.com>
 To: FFmpeg user questions <ffmpeg-user at ffmpeg.org> 
 Sent: Sunday, December 23, 2018 12:59 PM
 Subject: Re: [FFmpeg-user] Creating surround sound from mono wav files
On 12/23/18, CherylJosie <exwyeorzee-at-yahoo.com at ffmpeg.org> wrote:
> Hi all,
> I am trying to merge a surround sound file from discrete mono files with
> ffmpeg.
> The -map_channel function does not accept multiple audio input streams, and
> so far I have only managed to create stereo with -filter_complex amerge.
> amerge seems to ignore additional channels beyond stereo at the output, even
> though it parses them as inputs.

It does not parses them all.
Read manual and you will notice that amerge needs option that set
number of inputs.
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