Difference between revisions of "Ffmpeg syntax"

Revision as of 10:51, 17 October 2015

The below taken from : http://linuxers.org/book/export/html/593
ffmpeg -i inputfile.fmt1 outputfile.fmt2
ffmpeg -i input.avi -target dvd output.mpg
ffmpeg -i input.fmt1 -t 30 output.fmt2
The time specified is in seconds. But the format hh.mm.ss is also supported.
This command will convert the first 30 seconds of the file input.fmt2 into output.fmt2.
ffmpeg -sn -i "/run/media/george/My Passport/FRINGE_SEASON_1_DISC_1/BDMV/STREAM/00001.m2ts" -target film-dvd output.mp4

To convert from mkv to mp4 :
ffmpeg -i LostInTranslation.mkv -vcodec copy -acodec copy LostInTranslation.mp4

Audio only convert : ffmpeg -i input.mp4 -c:v copy -c:a libfdk_aac -vbr 3 output.mp4 ( mp3 can be specified i instead of libfdk_aac )

Below specifies to convert the audio to mp3, but the video gets converted as well to h???

ffmpeg -i input_file.mp4 -acodec mp3 out.mp4

Resizing images :
ffmpeg -i input.jpg -vf scale=320:-1 output_320.png ( sets the x value and scales the y )
location of wiki logo : /var/www/html/wiki/skins/common/images/wiki.jpg

Creating a thumbnail image from video