Introduction
ffmpeg is a very fast video and audio converter that can also grab from a live audio/video source. It can also convert between arbitrary sample rates and resize video on the fly with a high quality polyphase filter.
Installing ffmpeg
sudo apt-get install ffmpeg
Uses
Below are some tasks which you can perform using ffmpeg.
Getting information of a video
To get information of a video file use -i option as:
ffmpeg -i /path/videofile.avi
Making video from images
You can combine the images to make a video (like movie maker in windows) using ffmpeg as:
ffmpeg -f image2 -i image%d.jpg videofile.mpg
The above command will take all the images from the current directory (image1.jpg, image2.jpg, etc) and will join them to make a video file videofile.mpg.
Making images from video file
This is just opposite of the last step. This will take a video and will generate images from it.
ffmpeg -i videofile.mpg image%d.jpg
Encoding video for iPod/iPhone
- Source file: s_videofile.avi
- Audio codec: aac
- Audio bitrate: 128 kb/s
- Video codec: mpeg4
- Video bitrate: 1200 kb/s
- Video size: 320×180
- Generated video: f_videofile.mp4
ffpmeg -i s_videofile.avi input -acodec aac -ab 128kb -vcodec mpeg4 -b 1200 kb -mbd 2 -flags +4mv+trell -aic 2 -cmp 2 -subcmp 2 -s 320*180 -title X f_videofile.mp4
Encoding video for PSP
- Source : s_videofile.avi
- Audio codec : aac
- Audio bitrate : 32 kb/s
- Video codec : xvid
- Video bitrate : 1200 kb/s
- Video size : 320×180
- Generated video : f_videofile.mp4
ffmpeg -i s_videofile.avi -b 300 -s 320x240 -vcodec xvid -ab 32 -ar 24000 -acodec aac f_videofile.mp4
Video to Audio
You can extract the audio from a video file and save it as mp3 format.
ffmpeg -i s_videofile.avi -vn -ar 44100 -ac 2 -ab 192 -f mp3 soundfile.mp3
- Source video : s_video.avi
- Audio bitrate : 192kb/s
- output format : mp3
- Generated sound : soundfile.mp3
wav to mp3
ffmpeg -i s_audiofile.wav -acodec mp3 -ab 192k f_audiofile.mp3
avi to mpg
ffmpeg -i s_videofile.avi f_videofile.mpg
mpg to avi
ffmpeg -i s_videofile.mpg f_videofile.avi
avi to flv
ffmpeg -i s_videofile.avi -ab 56 -ar 44100 -b 200 -r 15 -s 320x240 -f flv f_videofile.flv
avi to dv
ffmpeg -i s_videofile.avi -s pal -r pal -aspect 4:3 -ar 48000 -ac 2 f_videofile.dv
avi to gif
ffmpeg -i s_videofile.avi f_giffile.gif
Mixing video with a sound file
ffmpeg -i s_audiofile.wav -i s_videofile.avi f_videofile.mpg
avi to mpeg (for dvd players)
ffmpeg -i s_videofile.avi -target pal-dvd -ps 2000000000 -aspect 16:9 f_videofile.mpeg
ps 2000000000 is the maximum size for the output file in bits hence it is 2 GB here.
Compress avi to divx
ffmpeg -i s_videofile.avi -s 320x240 -vcodec msmpeg4v2 f_videofile.avi
Compress Ogg Theora to mpeg dvd
ffmpeg -i s_videofile.ogm -s 720x576 -vcodec mpeg2video -acodec mp3 f_videofile.mpg
Compress avi to SVCD mpeg2
NTSC format:
ffmpeg -i s_videofile.avi -target ntsc-svcd f_videofile.mpg
PAL format:
ffmpeg -i s_videofile.avi -target pal-svcd f_videofile.mpg
Compress avi to VCD mpeg2
NTSC format:
ffmpeg -i s_videofile.avi -target ntsc-vcd f_videofile.mpg
PAL format:
ffmpeg -i s_videofile.avi -target pal-vcd f_videofile.mpg
Multipass encoding
ffmpeg -i fichierentree -pass 2 -passlogfile ffmpeg2pass fichiersortie-2
