Rename subtitle title?

[Adeleine]

I have an .mkv file that has selectable subtitles, however they are titled incorrectly. They say they are English subtitles, when in fact they are Spanish subtitles. How can I rename them? Can I rename them without having to remux?

[MattMcManis]

Hello, I have been away for a while.

I don't believe Axiom can rename them. I'm unsure how to do it through FFmpeg. See about the program MKVToolNix, it may be able to.

[MattMcManis]

I found out how to do it. Though it will remux it through FFmpeg using Codec Copy and Maps.

Example, if video has 3 subtitiles. Make the custom script in Axiom and press Run.

ffmpeg 

-y 

-i "C:\Path\To\Video.mkv" 

-c:v copy 
-map 0:v? 
-map_chapters 0 

-c:a copy 
-map 0:a? 

-metadata:s:a:0 language=spa
-metadata:s:a:0 title="Spanish Audio 1"

-metadata:s:a:1 language=spa
-metadata:s:a:1 title="Spanish Audio 2"

-c:s copy 
-map 0:s? 

-metadata:s:s:0 language=spa
-metadata:s:s:0 title="Spanish Subs 1"

-metadata:s:s:1 language=spa
-metadata:s:s:1 title="Spanish Subs 2"

-f matroska 

-threads 0  

"C:\Path\To\New Video.mkv"

[MattMcManis]

If you want to mux from scratch:

1 Video 2 Audio 2 Subtitles

ffmpeg 

-y 

-i "C:\Path\To\Video.h264" 

-i "C:\Path\To\Audio Spanish 1.aac" 
-i "C:\Path\To\Audio English 2.ac3" 

-i "C:\Path\To\Subs Spanish 1.ssa" 
-i "C:\Path\To\Subs English 2.ssa" 

-c:v copy 
-map 0:v? 
-map_chapters 0 
-metadata title="My Video"

-c:a copy 
-map 1:a? 
-map 2:a? 

-metadata:s:a:0 language=spa
-metadata:s:a:0 title="Spanish Audio 1"

-metadata:s:a:1 language=eng
-metadata:s:a:1 title="English Audio 2"

-c:s copy 
-map 3:s? 
-map 4:s? 

-metadata:s:s:0 language=spa
-metadata:s:s:0 title="Spanish Subs 1"

-metadata:s:s:1 language=spa
-metadata:s:s:1 title="English Subs 2"

-f matroska 

-threads 0  

"C:\Path\To\New Video.mkv"