Create a thumbnail from a video file

thumbnail() { ffmpeg -itsoffset -20 -i $i -vcodec mjpeg -vframes 1 -an -f rawvideo -s 640x272 ${i%.*}.jpg }

5
By: Nicolargo
2009-11-09 09:42:55

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  • This is the fastest way to burn a DVD-Video from the command line. Dependencies: libav-tools dvdauthor growisofs The first command: avconv -i input.avi -target pal-dvd dvd.mpg converts any given video file avconv can handle into MPEG2-PS (6 Mbit/s) with AC3 audio (448 kbit/s). If your distribution is not up to date, just use ffmpeg - the syntax is the same. Hint: If you want to create an NTSC DVD, type ntsc-dvd instead ;-) The second command: echo PAL > ~/.config/video_format sets PAL as your default video format. This is a workaround for an old dvdauthor bug. If you want NTSC, guess what? Type NTSC instead! The third command: dvdauthor -o dvd/ -t dvd.mpg creates .VOB files and adds them to the dvd/ folder. You don't have to create this folder yourself. You can add as many titles as you like, just keep in mind that there's a maximum of 4482 MiB (4.37 GiB) for normal DVDs. The fourth command: dvdauthor -o dvd/ -T finishes the DVD-Video. Now you can burn your DVD using growisofs: growisofs -Z /dev/dvd -dvd-video dvd/ Sources: manpages http://tuxicity.wordpress.com/2006/12/01/avi-to-dvd-with-ffmpeg-and-dvdauthor/


    0
    avconv -i input.avi -target pal-dvd dvd.mpg && echo PAL > ~/.config/video_format && dvdauthor -o dvd/ -t dvd.mpg && dvdauthor -o dvd/ -T && growisofs -Z /dev/dvd -dvd-video dvd/
    ppq · 2012-09-09 20:56:54 0

What Others Think

I think you mistakenly typed 'i' instead of '1' So the function will be as follows thumbnail() { ffmpeg -itsoffset -20 -i "$1" -vcodec mjpeg -vframes 1 -an -f rawvideo -s 640x272 ${1%.*}.jpg }
totti · 347 weeks and 3 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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