[FFmpeg-user] Creating screencap mosaic sheet issues

[kosta vlotis]

I'm trying to create a screencap mosaic sheet similar to what is shown in
https://trac.ffmpeg.org/wiki/How%20to%20take%20multiple%20screenshots%20to%20an%20image%20%28tile%2C%20mosaic%29
.

I'm running into a few issues:

   - Firstly, I can't seem to figure out how to set the screencap interval.
   I need to set the interval to 5 seconds.
   - Secondly, I've played with some variations of the command and what
   seems to be happening is the same sheet gets duplicating 5 times before
   moving on to the next.


Screencap mosaic jpg images with the following specs need to be created:

   - 5x5 tiles
   - images must have a resolution of 160x90 @ 16:9
   - the screencap interval must be 5 seconds.
   - These must be created for the duration of the video.


Here is my command line (running the latest zeranoe windows build):
ffmpeg -i video.mpeg -vf
"select='isnan(prev_selected_t)+gte(t-prev_selected_t\,5)',scale=160:90,tile=5x5"
-qscale:v 3 -y %02d_sheet.jpg

Can anyone help?