Upsampling MQA files to original resolution with sox

[ps3guy]

(04-07-2017 21:31)simoncn Wrote:  I haven't been able to find a way to get ffmpeg to pass the -vsM options (or equivalent) to the libsoxr library. Any suggestions would be appreciated.

I believe computeraudiophile.com has come up with some simple changes to ffmpeg, but would require compiling a forked version. I'm not interested in mqa but in using sox, convolving, and some custom resampling programs, though mqa could be easily handled with sox. I created a ffmpeg script that parses the file name and passes it to sox. Unfortunately it appears to play, but without sound. I'm not sure what minimstreamer is expecting back from sox, raw format? Does this have the potential to work, before I pursue it too far?

FILE_NAME="$(echo "$@" | awk -F'-i | -vn' '{print $2}')"
sox -q -D "${FILE_NAME}" -t raw -r 192000 -e signed-integer -c 2 -b 24 --endian little -

Thanks again,
Mike