[FFmpeg-user] Sharpen a video

[Lou Logan]

On Wed, Jan 3, 2018, at 9:38 AM, Giang_Le wrote:
> I try to sharpen a video using unsharp filter. I read the documentation and
> used the instruction.
> But I got "videofilename.ext: Unable to find suitable output format for...".
> Could some one give me an example of how to do this exactly?
> Thank you

The most basic example:
ffmpeg -i input.mp4 -vf unsharp output.mp4

However, we can't tell you what you did wrong because you did not provide your actual ffmpeg command and the complete console output.