[FFmpeg-user] Capturing a frame from video and resizing it...issue.

[Claudiu Rad]

On 5/24/2015 8:40 PM, Dani A wrote:
> I am using the below and it is not working:
> ffmpeg -i apple.mp4 -ss 00:00:4 -vframes 1 scale=241:164 apple2.png
>
> Error:
> [NULL @ 0xc217720] Unable to find a suitable output format for 'scale=320:240'
> scale=320:240: Invalid argument
>

you definitely have an incorrect command line syntax. the scaling 
details should be preceded by the -vf switch (as this is a video 
filter), otherwise ffmpeg would consider that argument as the output file.
the error message really gave you the hint to the problem.

ffmpeg -i apple.mp4 -ss 00:00:4 -vframes 1 *-vf* scale=241:164 apple2.png

-- 
Claudiu