mencoder

hectorDUQUE · 03-03-2009, 04:57 PM

hi guys,

i would like to copy some frames from a video.
I am trying this command to copy the whole video:

Code:

mencoder  -of avi -nosound -ovc copy When_Galaxies_collide__Latest_images_from_NASA_and_Hubble.flv  -o  out.flv

1. how can i do to copy some frames after skipping another ones?

2. how can i do to get just one frame; i mean on image (jpg) ?

thanks in advance,

Hector

T74marcell · 03-06-2009, 08:45 PM

Assuming that you know the starting and trailing cut points, first cut off the tail, then cut off the start section. If you would start by cutting the head, then you would need to recalculate the end position when dealing with the tail.

Just a sample:

Quote:

mencoder -endpos "00:20:33" -ovc copy -oac copy \
"in.avi" -o "out.avi"
mencoder -ss "00:11:15" -ovc copy -oac copy \
"out.avi" -o "final.avi"

Arch Linux

hDUQUE · 03-09-2009, 03:00 PM

hey,
thank you T74marcell, it works ...

i wonder if you now how to take out just one frame to a jpg file ?

hector

pwalden · 03-11-2009, 02:52 PM

The following dumps one second of jpeg frames starting at position hh:mm:ss

Quote:

mplayer -ss hh:mm:ss -endpos 1 -vo jpeg "in.avi"

hectorDUQUE · 03-12-2009, 02:04 PM

thank you guys ... it works!