Dump last frame of video file using ffmpeg/mencoder/transcode et. al

Question

I\'d like to grab the last frame in a video (.mpg, .avi, whatever) and dump it into an image file (.jpg, .png, w

Answer 1

I couldn't get Nelson's solution to work. This worked for me. https://gist.github.com/samelie/32ecbdd99e07b9d8806f

EDIT (just in case the link disappears, here is the shellscript—bobbogo):

#!/bin/bash

fn="$1"
of=`echo $1 | sed s/mp4/jpg/`

lf=`ffprobe -show_streams "$fn" 2> /dev/null | grep nb_frames | head -1 | cut -d \= -f 2`
rm -f "$of"
let "lf = $lf - 1"
ffmpeg -i $fn -vf select=\'eq\(n,$lf\) -vframes 1 $of