here is my current dvd.sh #!/bin/bash sdir=`dirname $0` dir=`cd "$sdir"; pwd` echo "running /dev/shm//dvd_20240120-153459/dvd.sh" rate=`soxi -r $dir/dvd.wav` channels=`soxi -c $dir/dvd.wav` bits=`soxi -b $dir/dvd.wav` PATH=$PATH:/dev/shm/new-git/cinelerra/cinelerra-5.1/bin sox $dir/dvd.wav -V -t raw -x $dir/dvd-1.lpcm mplex -f 8 -L $rate:$channels:$bits -o $dir/dvd.mpg $dir/dvd.m2v $dir/dvd-1.lpcm #ffmpeg -i $dir/dvd.m2v -i $dir/dvd.wav -c:v copy -c:a pcm_dvd -fflags +genpts -f dvd $dir/dvd.mpg rm -rf $dir/iso mkdir -p $dir/iso export VIDEO_FORMAT=PAL dvdauthor -x - <<eof <dvdauthor dest="$dir/iso"> <vmgm> <fpc> jump title 1; </fpc> </vmgm> <titleset> <titles> <video format="pal" aspect="4:3" resolution="720x576"/> <audio format="pcm" lang="en"/> <pgc> <vob file="$dir/dvd.mpg" chapters="0:00:00.0"/> </pgc> </titles> </titleset> </dvdauthor> eof echo To burn dvd, load blank media and run: echo growisofs -dvd-compat -Z /dev/dvd -dvd-video $dir/iso kill $$ ==== basically my attempt at making ffmpeg working as muxer failed, so I used soxi for getting info from wav file, and then sox for converting audio and mplex (with soxi generated info) to get final mpeg and dvdauthor it. On Sun, Jan 21, 2024 at 12:49 PM Andrew Randrianasulu <[email protected]> wrote:

command line:

sox /dev/shm/dvd_20240120-153459/dvd.wav -V -t raw -x /dev/shm/dvd_20240120-153459/dvd-1.lpcm

I set output file to different name so I can compare pcm directly produced by cingg and sox-converted version.

detailed output:

sox /dev/shm/dvd_20240120-153459/dvd.wav -V -t raw -x /dev/shm/dvd_20240120-153459/dvd-1.lpcm sox: SoX v14.4.2 sox INFO formats: detected file format type `wav'

Input File : '/dev/shm/dvd_20240120-153459/dvd.wav' Channels : 2 Sample Rate : 48000 Precision : 24-bit Duration : 00:01:00.00 = 2880000 samples ~ 4500 CDDA sectors File Size : 17.3M Bit Rate : 2.30M Sample Encoding: 24-bit Signed Integer PCM Endian Type : little Reverse Nibbles: no Reverse Bits : no

sox INFO sox: Overwriting `/dev/shm/dvd_20240120-153459/dvd-1.lpcm' sox INFO formats: `/dev/shm/dvd_20240120-153459/dvd-1.lpcm': overriding machine byte-order

Output File : '/dev/shm/dvd_20240120-153459/dvd-1.lpcm' (raw) Channels : 2 Sample Rate : 48000 Precision : 24-bit Duration : 00:01:00.00 = 2880000 samples ~ 4500 CDDA sectors Sample Encoding: 24-bit Signed Integer PCM Endian Type : big Reverse Nibbles: no Reverse Bits : no Comment : 'Processed by SoX'

sox INFO sox: effects chain: input 48000Hz 2 channels sox INFO sox: effects chain: output 48000Hz 2 channels

=====

so, modern sox (-w/-s options were deprecated and replaced by others - thankfully we do not need them if input file autodetected) can process wav files into lpcm suitable for mplex

So, guide is much simpler in sense in cingg you just change audio to wav/24 bits, then run sox, and change mplex line to one including -L freq:channels:bits specification. May be you can even prepare text patch and apply it to dvd.sh ?

Oh, and in case of 24-bit audio at 48 khz you definitely want to lower your video bitrate ...