[FFmpeg-user] forfiles - ffmpeg -Volume Filter not recognised

[Gyan Doshi]

On 5/9/2018 1:51 PM, Gareth Fakouri wrote:
> 
> PS C:\Users\garet\Videos\Cobra> forfiles /c "cmd /c ffmpeg -i @FILE -filter:a "volume=3" -c:v libx264 -preset ultrafast @FNAME.mp4"
> ERROR: Invalid argument/option - 'volume=3 -c:v libx264 -preset ultrafast @FNAME.mp4'.

> 
> Maybe quotes within quotes is the problem??????????????

I think so. You can skip the quotes surrounding

     volume=3

Alternatvely, the escape character for PS is ` (grave accent, above Tab 
key). So you can also try

     `"volume=3`"


Regards,
Gyan