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

[Dani A]

I have fixed the command as below:
ffmpeg -i apple.mp4 -ss 00:00:4 -vf scale=241:164 apple5.png -y
But I still receive the below warning, the file get created through but I do not understand the warning.

[image2 @ 0xaf70fc0] Could not get frame filename number 2 from pattern 'apple5.png' (either set updatefirst or use a pattern like %03d within the filename pattern)av_interleaved_write_frame(): Invalid argument
frame=    2 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.08 bitrate=N/A
video:205kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Conversion failed!


 


     On Sunday, May 24, 2015 10:31 PM, Dani A <danix4u at yahoo.com> wrote:
   

 I have fixed the command as below:
 


     On Sunday, May 24, 2015 2:27 PM, Claudiu Rad <jazzman at misalpina.net> wrote:
   

 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

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