[FFmpeg-user] single frame duration with concat

[Lou]

On Mon, 25 May 2015 16:02:36 +0200
lorenzo angeli <lorenzo.angeli at efestolab.uk> wrote:

> Hi all, I'm trying to concatenate a single image before an image sequence.
> 
> My aim is to retain the first image for just one frame, and not one second
> (as I'm doing now). I've been trying all sorts of things, setting -r 25/1
> -t 1 -loop 1 but none of these combination seems to be working.

Refer to the trim filter:

http://ffmpeg.org/ffmpeg-filters.html#trim