ffmpeg to merge subtitle (no encoding)

[sambat]

Been using ffmpeg and a bat file I came across to convert DTS to AAC audio - which works.
Now I want to merge the subs from the source into the new file without encoding and I can't quite figure how to modify the bat.

Here's the ffprobe data (edited) .

Input #0, matroska,webm, from 'who.mkv':

Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 1280x720, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 50 t
bc (default)

Stream #0:1(eng): Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 1536 kb/s (default)

Stream #0:2(eng): Subtitle: dvd_subtitle, 1280x720 (default)

-and the bat file.

REM convert DTS audio to aac
@echo off

for %%F IN (*.mkv) do (
echo * %%~nF.mkv
echo.
       ffmpeg -i %%~nF.mkv -c:a pcm_s16le -f wav - | neroAacEnc -if - -ignorelength -of %%~nF.aac
echo.
echo * Merging new AAC audio into MKV
       ffmpeg -i %%~nF.mkv -i %%~nF.aac -c:v copy -c:a copy -map 0:v:0 -map 1:a:0 %%~nF.AAC.mkv
echo.
rem pause
echo * Removing temporary file
       del %%~nF.aac					
                            )
echo.
echo * All Finished
:exit
pause

[Selur]

-c:v copy -c:a copy

copies all video (:v) and audio (:a) streams, adding:

-c:s copy

will tell ffmpeg to also copy the subittle (:s) streams
https://www.ffmpeg.org/ffmpeg-all.html

Cu Selur

[sambat]

Thank you for the suggestions.
If I used the 'copy' commands without 'map', the new audio wasn't muxed into the output.
After stumbling around I changed the command thus:

 ffmpeg -i %%~nF.mkv -i %%~nF.aac -c:v copy -c:s copy -c:a copy  -map 0:v:0  -map 0:s:0 -map 1:a:0  %%~nF.AAC.mkv

This gave me the new audio and the subs.

ffmpeg listed the following after muxing - which has me baffled:

Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:2 -> #0:1 (copy)
Stream #1:0 -> #0:2 (copy)

I don't know how the Probe data matches up with the output data - any ideas??

Input #0, matroska,webm, from 'who.mkv':

Stream #0:0(eng): Video: h264 (High), yuv420p(progressive), 1280x720, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 1k tbn, 50 t
bc (default)

Stream #0:1(eng): Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 1536 kb/s (default)

Stream #0:2(eng): Subtitle: dvd_subtitle, 1280x720 (default)

[Selur]

try:

ffmpeg -i %%~nF.mkv -i %%~nF.aac -c:v copy -c:s copy -c:a copy  -map 0:v  -map 1:a -map 0:s %%~nF.AAC.mkv

you can also try:

ffmpeg -i %%~nF.mkv -i %%~nF.aac -c:v copy -c:s copy -c:a copy  -map 0 -map -0:a -map 1:a %%~nF.AAC.mkv

both should work iirc.

Cu Selur

[sambat]

Thank you Selur, both codes worked without problems.