[FFmpeg-user] -f mkv cannot be used, why?

[Moritz Barsnick]

On Wed, Feb 17, 2016 at 12:41:34 +0000, Kieran O Leary wrote:
> Is there any benefit to declaring '-f matroska' in addition to declaring
> the output container format in the form of 'output.mkv'?

No, the use of .mkv as output file extension automatically implies the
use of the matroska muxer.

Moritz