ffmpeg is a very fast video and audio converter that can convert on the fly with a high quality polyphase filter. This cheat sheet will help to explain the many options and show useful examples
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Command syntax:
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ffmpeg [global-options] [[infile-options][-i infile]]... {[outfile-options] outfile}...
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Display input stream information:
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ffmpeg -i video.avi
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-y
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Overwrite output files
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-n
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Do not overwrite output files
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-f fmt
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force input or output file format
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-i fName
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input file name. If specified with no output file, a summary of the content streams is shown
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-c codecName
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specify codec [input or output]
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-fs Nbytes
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specify maximum output file size in Nbytes
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K or k
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103
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1000 bytes
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Kilobytes
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M
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106
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1000000 bytes
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Megabytes
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G
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109
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1000000000
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Gigabytes
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Ki
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210
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1024
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Kibibyte
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Mi
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220
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1048576
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Mebibyte
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Gi
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230
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1073741824
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Gibibyte
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-h
-? -help --help |
Show basic help
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-h long
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Show more help
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-h full
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Show all options, including all format and codec specific options
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-version
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Show version
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-formats
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Show available formats
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-codecs
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Show available codecs
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-protocols
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Show available protocols
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-filters
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Show available libavfilter filters
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-sample_fmts
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Show available sample formats
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-bsfs
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Show available bitstream filters
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-pix_fmts
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Show available pixel formats
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-v value
-loglevel value |
Log output verbosity
value is an integer, or one of: quiet, panic, fatal, error, warning, info, verbose, debug |
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-slang code
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Set the ISO 639 language code (3 letters) of the current subtitle stream.
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-scodec codec
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Set the subtitle codec. This is an alias for -codec:s. Use 'copy' to copy stream.
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-sn
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Disable subtitle recording.
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-newsubtitle
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add a new subtitle stream to the current output stream
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-b bRate
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set video bitrate (in kbit/s)
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-fixaspect
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fix aspect ratio
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-bt tolerance
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set video bitrate tolerance (in kbit/s)
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-maxrate bRate
-minrate bRate |
set maximum or minimum video bitrate tolerance (in kbit/s)
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-bufsize size
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set ratecontrol buffer size (in kByte)
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-sameq
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use same video quality as source (implies VBR)
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-newvideo
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add a new video stream to the current output stream
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-vf vflip
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Flip the input video vertically
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-vf hflip
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Flip the input video horizontally
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-vf transpose=transSpec
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Rotates or flips input video
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transSpec is a list of values, colon separated.
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dir=N:passthrough=orientation
N = 0...7 ; passthrough is one of: none, portrait, landscape |
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-vf delogo=sizeSpec:t=t:show:N
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Remove a logo from x,y for w,h pixels, with fuzzy band thickness t
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-vf removelogo=imgFile
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Use the black pixels in the bitmap image file to remove the logo
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-vf drawbox=sizeSpec:color@opacity
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draw a box border
colour specification 0xhex and opacity [0...1] |
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sizeSpec is a list of values, colon separated.
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x=x:y=y
position from top left corner w=width:h=height width and height |
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-ab bRate
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set audio bitrate (in kbit/s)
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-aframes N
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Set the number of audio frames to record. [an alias for -frames:a]
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-aq q
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Set the audio quality (codec-specific, VBR). [an alias for -q:a]
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-an
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Disable audio recording
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-acodec codec
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Set the audio codec. [an alias for -codec:a]
Use 'copy' to copy stream. |
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-vol
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Change the audio volume in multiples of 256 where 256 = 100% (normal) volume. e.g. 512 = 200%
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-newaudio
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add a new audio stream to the current output stream
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-alang code
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set the ISO 639 language code (3 letters) of the current audio stream
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Transcode input file to DVD PAL format
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ffmpeg -y -threads 8 -i inFile -target pal-dvd -ac 2 -aspect 16:9 -acodec mp2 -ab 224000 -vf pad=0:0:0:0 outFile
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Convert to grayscale
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ffmpeg -y -i inFile -flags gray outFile
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Create 1 minute of audio noise
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ffmpeg -ar 48000 -t 60 -f s16le -acodec pcm_s16le -i /dev/urandom -ab 64K -f mp2 -acodec mp2 -y noise.mp2
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Extract images from video
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ffmpeg -i foo.avi -r 1 -s WxH -f image2 outFile%03d.png
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Convert image file to other formats
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ffmpeg -i foo0122.png foo.tiff
pgm, ppm, pam, pgmyuv, jpeg, gif, png, tiff, sgi |
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Convert images to AVI file
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ffmpeg -f image2 -i foo-%03d.jpeg -r 12 -s WxH foo.avi
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Convert a WAV file to MP3
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ffmpeg -i source_song.wav -vn -ar 44100 -ac 2 -ab 192 -f mp3 final_song.mp3
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Extract audio from a video, transcoding it to MP3
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ffmpeg -i source.avi -vn -ar 44100 -ac 2 -ab 192 -f mp3 sound.mp3
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Convert .avi to .flv
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ffmpeg -i source.avi -ab 56 -ar 44100 -b 200 -r 15 -s 320x240 -f flv output.flv
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Convert .avi to animated gif
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ffmpeg -i video.avi animated.gif
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Attach a picture to an mp3
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ffmpeg -i input.mp3 -i cover.png -c copy -metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" out.mp3
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Mix a video with a sound file
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ffmpeg -i song.wav -i source_video.avi outvideo.mpg
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Write an mp3 with an ID3v2.3 header and an ID3v1 footer
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ffmpeg -i inFile -id3v2_version 3 -write_id3v1 1 outFile.mp3
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Concatenate input files
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cat inFile1 inFile2 | ffmpeg -f mpeg -i - -vcodec copy -acodec copy outFile.mpg
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Encode a clip with codec with bitrate, and mp3 audio
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ffmpeg -i clip.avi -vcodec libxvid -b 800000 -acodec libmp3lame -ab 128 new-clip.avi
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Merge audio stream with video stream from different files
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ffmpeg -i audioS.mp4 -i videoS.mp4 -c copy -map 0:a -map 1:v outFile.mp4
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Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
