# Convert .mkv to .mp4 with FFMPEG at higher quality

```bash
ffmpeg -i "$1" -map 0:v:0 -map 0:a:0? \
  -c:v libx264 -preset slow -crf 18 \
  -c:a aac -b:a 256k \
  -movflags +faststart \
  $2
```