how to trim off excessive audio from mkv during muxing?

[lansing]

I have a video length of 3:30 and an audio length about 3:30.500, I wanted to mux them into a mkv so that the excessive audio will be cut off when the video ends. I tried to do it with mkvtoolnix, but it didn't have the splitting option to split based on video length. How do I do this?

[sekininsha]

you can cut those 500 ms with an audio editor

[M+AUDIO]

Hello,

Also possible with FFmpeg:
ffmpeg.exe -i "inputvideo" -i "inputaudio" -shortest -map 0 -map 1 -c:v copy -c:a copy -y "output.mkv"
pause

"-shortest" switch will cut your output when shorter stream ends. ;-)

edit: it is also possible according to included mkvmerge's doc, especially this part: 2. Splitting after a duration.

[sneaker_ger]

edit: it is also possible according to included mkvmerge's doc, especially this part: 2. Splitting after a duration.

That doesn't really work reliably if you want to cut remaining audio streams when the video has already ended. Doing it in more than one step works, though. (First only cut audio, then mux with video.)

[lansing]

Hello,

Also possible with FFmpeg:
ffmpeg.exe -i "inputvideo" -i "inputaudio" -shortest -map 0 -map 1 -c:v copy -c:a copy -y "output.mkv"
pause

"-shortest" switch will cut your output when shorter stream ends. ;-)


I tried the above code, it didn't work. After the video ended, the audio still kept playing.

[setarip_old]

@lansing

Hi!

If I remember correctly, You can accomplish this using "MKVCleaver"...

[M+AUDIO]

I tried the above code, it didn't work. After the video ended, the audio still kept playing.

That's odd, Dunno why:confused:
It always works for me. If you like to re encode the audio only, FFmpeg provides an audio filter called "atrim" for you. here is the link (http://ffmpeg.org/ffmpeg-filters.html#atrim).

@ sneaker_ger
Hello,
I didn't tested that before, thanks for the info.