Convert AVI to MP4

[matrixebiz]

Hello, in the Transcoding settings you have the command to convert mp3 - ffmpeg -i %s -map 0:0 -b:a %bk -v 0 -f mp3 -

.. but the Roku doesn't read AVI, so what command would I use to convert AVI to mp4. Can I just use - ffmpeg -i %s -c:v libx264 -crf 19 -preset slow -c:a aac -b:a 192k -ac 2 -f mp4 -

Thank you