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Tuesday, January 22, 2008

Converting Audio/Videos using FFMPEG

I was simply ignoring writing this articles but after writing articles on Installing FFMPEG on Linux i couldn’t resist on writing this article. Anyways this article will guide you on how you can convert audio video formats using FFMPEG.



This articles in divided in various sections



  • Parameter Used

  • Command Line Syntax

  • Conversion Examples


Parameter Used:

Common Parameters

















-i ‘filename’ Filename will be the Path of Source Filename
-y Overwrite the existing output file without prompting
-an disable audio

Video Related Parameters





















-aspect ‘aspect ratio’ Set Aspect Ratio for the video (4:3, 16:9 or 1.3333, 1.7777)
-r ‘rate’ set frame rate in Hz for the video
-s ’size’ set video resolution size (Width x Height)
-sameq use same video quality as source

Audio Related Parameters





















-ar ‘rate’ set audio sampling rate (in Hz)
-acodec ‘codec’ force audio codec E.g. mp3
-vol ‘volume’ change audio volume (256=normal)
-ab ‘rate’ set audio bit rate (in bits/s)

Advanced Parameters









-map_meta_data output file:input file Copy the Metadata from Input File to Converted output file

Command Line Syntax

ffmpeg –i ‘input filename’ ‘output filename’



  • Syntax Example:

    [root@linux /]# ffmpeg -i demo.mpg demo.flv

    Here FFMPEG will convert demo.mpg file to demo.flv


Conversion Examples:


Video Examples:



  • Converting MOV to FLV using FFMPEG

    ffmpeg -i movie1.mov movie1.flv

    This will convert movie1.mov file to movie1.flv



  • Converting Mpeg to FLV using FFMPEG

    ffmpeg -i movie1.mpeg movie1.flv

    This will convert movie1.mpeg file to movie1.flv



  • Converting AVI to FLV using FFMPEG

    ffmpeg -i movie1.avi -s 500×500 movie1.flv

    This will convert movie1.avi file to movie1.flv and will resize the video resolution to 500×500



  • Converting 3GP to FLV using FFMPEG

    ffmpeg -i movie1.3gp -sameq -an movie1.flv

    This will convert movie1.3gp file to movie1.flv and will keep the original file settings and will disable the audio content


Audio Examples:



  • Converting aac to mp3 using FFMPEG with MetaData

    ffmpeg -i audio1.aac -ar 22050 -ab 32 -map_meta_data audio1.mp3:audio1.aac audio1.mp3

    This will convert audio1.aac to audio1.mp3 having audio rate 22.05 Khz and Audio BitRate 32Khz and will copy the meta data from .aac file to .mp3 file



  • Converting WMV to MP3 using FFMPEG

    ffmpeg -i audio1.wmv audio1.mp3

    This will convert audio1.wmv file to audio1.mp3



  • Converting WMV to FLV using FFMPEG

    ffmpeg -i audio1.wmv audio1.flv

    This will convert audio1.wmv file to audio1.flv, this will generate only audio content



  • Converting AMR to MP3 using FFMPEG

    ffmpeg -i audio1.amr -ar 22050 audio1.mp3

    This will convert audio1.amr file to audio1.mp3 having audio rate 22.05 Khz



  • Converting aac to mp3 using FFMPEG

    ffmpeg -i audio1.aac -ar 22050 -ab 32 audio1.mp3

    This will convert audio1.aac to audio1.mp3 having audio rate 22.05 Khz and Audio BitRate 32Khz

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