I found this It maybe could be adapted
the purpose was to extract a thumbnail from the middle
but it does find the middle an do something
your problem is that you want to do this in a single pass
the thread>
https://superuser.com/questions/4773...eo-with-ffmpeg
Quote:
up vote
-1
down vote
This bash command works like a charm:
Code:
avconv -i 'in.mpg' -vcodec mjpeg -vframes 1 -an -f rawvideo \
-s 420x300 -ss `avconv -i in.mpg 2>&1 | grep Duration \
| awk '{print $2}' | tr -d , \
| awk -F ':' '{print ($3+$2*60+$1*3600)/2}'` out.jpg
shareimprove this answer
edited May 15 '15 at 7:40
Matt Joiner
463725
answered Nov 9 '14 at 17:14
Георги Стефанов
1
My god that's complicated ? Sridhar-Sarnobat Mar 18 '15 at 18:22
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Last post -- well life ain't simple dude
awk -F ':' '{print ($3+$2*60+$1*3600)/2 gets your midpoint