Zend certified PHP/Magento developer

FFMPEG – COPY MKV to MP4 but add 2.0 Stream

Morning All,

Using FFMPEG currently just to re-container UHD MKV into MP4 with…

ffmpeg -i File1.mkv -c:v copy -c:a copy -strict -2 File1.mp4

But these MKV only have TrueHD or DTS-HD which is fine when playing to my theatre room as it passes through to my receiver, but my TV doesn’t do a great job of downmixing the surround to 2.0. So I want to add an extra track at 2.0.

I’m not overly clever with this stuff and generally google everything.. So is there something I can add to my script to create and add a 2.0 audio stream to my final mp4??

TIA
JB