diff --git a/ComChap.ps1 b/ComChap.ps1
index 7985f7a..8759afb 100644
--- a/ComChap.ps1
+++ b/ComChap.ps1
@@ -111,7 +111,7 @@ if ($hascommercials) {
         Add-Content -Path $metafile "END=$([int]($end * 1000))"
         Add-Content -Path $metafile "title=Chapter $i"
     }
-    try {& $ffmpegPath -hide_banner -loglevel error -nostdin -i $infile -i $metafile -c copy -map_metadata 1 -y $outfile}
+    try {& $ffmpegPath -hide_banner -loglevel error -nostdin -i $infile -i $metafile -c copy -map 0 -map_metadata 1 -y $outfile}
     catch {Write-Host "Error running ffmpeg: $infile"}
 }
 If (!(Test-Path $outfile)) {
diff --git a/ComCut.ps1 b/ComCut.ps1
index af44c61..76396ce 100644
--- a/ComCut.ps1
+++ b/ComCut.ps1
@@ -96,7 +96,7 @@ foreach ($line in $lines) {
         $tempfiles += $chapterfile
         $concat += "|$chapterfile"
         $duration = [double]$end - [double]$start
-        & $ffmpegPath -hide_banner -loglevel error -nostdin -i $infile -ss $start -t $duration -c copy -y $chapterfile
+        & $ffmpegPath -hide_banner -loglevel error -nostdin -i $infile -ss $start -t $duration -c copy -y -map 0 $chapterfile
         $totalcutduration += $startnext - $end
     }
     $start = $startnext
@@ -119,7 +119,7 @@ if ($hascommercials) {
         $tempfiles += $chapterfile
         $concat += "|$chapterfile"
         $duration = [double]$end - [double]$start
-        & $ffmpegPath -hide_banner -loglevel error -nostdin -i $infile -ss $start -t $duration -c copy -y $chapterfile
+        & $ffmpegPath -hide_banner -loglevel error -nostdin -i $infile -ss $start -t $duration -c copy -map 0 -y $chapterfile
     }
     & $ffmpegPath -hide_banner -loglevel error -nostdin -i $metafile -i ("concat:$($concat.Substring(1))") -c copy -map_metadata 0 -y $outfile
 }
diff --git a/comchap b/comchap
index 1d203b1..39ab51f 100755
--- a/comchap
+++ b/comchap
@@ -200,7 +200,7 @@ if $hascommercials ; then
     tempfile=`mktemp --suffix=."$outextension" "$outdir"/XXXXXXXX`
 
     echo Writing file to temporary file: "$tempfile"
-    if $ffmpegPath -loglevel error -hide_banner -nostdin -i "$infile" -i "$metafile" -map_metadata 1 -codec copy -y "$tempfile" 1>&3 2>&4; then
+    if $ffmpegPath -loglevel error -hide_banner -nostdin -i "$infile" -i "$metafile" -map 0 -map_metadata 1 -codec copy -y "$tempfile" 1>&3 2>&4; then
       mv -f "$tempfile" "$outfile"
       echo Saved to: "$outfile"
     else
@@ -208,7 +208,7 @@ if $hascommercials ; then
       exitcode=-1
     fi
   else
-    if $ffmpegPath -loglevel error -hide_banner -nostdin -i "$infile" -i "$metafile" -map_metadata 1 -codec copy -y "$outfile" 1>&3 2>&4; then
+    if $ffmpegPath -loglevel error -hide_banner -nostdin -i "$infile" -i "$metafile" -map 0 -map_metadata 1 -codec copy -y "$outfile" 1>&3 2>&4; then
       echo Saved to: "$outfile"
     else
       echo Error running ffmpeg: "$infile" 1>&3 2>&4 >&2
diff --git a/comcut b/comcut
index f72c37f..19f19f9 100755
--- a/comcut
+++ b/comcut
@@ -181,7 +181,7 @@ do
     concat="$concat|$chapterfile"
 
     duration=`echo "$end" "$start" | awk  '{printf "%f", $1 - $2}'`
-    $ffmpegPath -hide_banner -loglevel error -nostdin -i "$infile" -ss "$start" -t "$duration" -c copy -y "$chapterfile"
+    $ffmpegPath -hide_banner -loglevel error -nostdin -i "$infile" -ss "$start" -t "$duration" -c copy -map 0 -y "$chapterfile"
 
     totalcutduration=`echo "$totalcutduration" "$startnext" "$end" | awk  '{print $1 + $2 - $3}'`
 
@@ -216,7 +216,7 @@ if $hascommercials ; then
     concat="$concat|$chapterfile"
 
     duration=`echo "$end" "$start" | awk  '{printf "%f", $1 - $2}'`
-    $ffmpegPath -hide_banner -loglevel error -nostdin -i "$infile" -ss "$start" -t "$duration" -c copy -y "$chapterfile"
+    $ffmpegPath -hide_banner -loglevel error -nostdin -i "$infile" -ss "$start" -t "$duration" -c copy -y -map 0 "$chapterfile"
   fi
 
   $ffmpegPath -hide_banner -loglevel error -nostdin -i "$metafile" -i "concat:${concat:1}" -c copy -map_metadata 0 -y "$outfile"