Main options
Command syntax: |
ffmpeg [global-options] [[infile-options][-i infile]]... {[outfile-options] outfile}... |
Display input stream information: |
ffmpeg -i video.avi |
Many of the audio/video file formats [such as WAV, AIFF, MP4, MKV, AVI, etc.] are envelope containers for multiple streams of data content such as audio, video, subtitle text, still images, fonts, etc.
Global options
-y |
Overwrite output files |
-n |
Do not overwrite output files |
Main options
-f fmt |
force input or output file format |
-i fName |
input file name. If specified with no output file, a summary of the content streams is shown |
-c codecName |
specify codec [input or output] |
-fs Nbytes |
specify maximum output file size in Nbytes |
The file extension typically determines the file format, so the '-f' option is not needed in most cases.
Size specification
K or k |
103 |
1000 bytes |
Kilobytes |
M |
106 |
1000000 bytes |
Megabytes |
G |
109 |
1000000000 |
Gigabytes |
| |
Ki |
210 |
1024 |
Kibibyte |
Mi |
220 |
1048576 |
Mebibyte |
Gi |
230 |
1073741824 |
Gibibyte |
suffices used with most numerical values
Help options
-h
-?
-help
--help |
Show basic help |
-h long |
Show more help |
-h full |
Show all options, including all format and codec specific options |
-version |
Show version |
-formats |
Show available formats |
-codecs |
Show available codecs |
-protocols |
Show available protocols |
-filters |
Show available libavfilter filters |
-sample_fmts |
Show available sample formats |
-bsfs |
Show available bitstream filters |
-pix_fmts |
Show available pixel formats |
-v value
-loglevel value |
Log output verbosity
value is an integer, or one of: quiet, panic, fatal, error, warning, info, verbose, debug |
Subtitle options
-slang code |
Set the ISO 639 language code (3 letters) of the current subtitle stream. |
-scodec codec |
Set the subtitle codec. This is an alias for -codec:s. Use 'copy' to copy stream. |
-sn |
Disable subtitle recording. |
-newsubtitle |
add a new subtitle stream to the current output stream |
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Video options
-b bRate |
set video bitrate (in kbit/s) |
-fixaspect |
fix aspect ratio |
-bt tolerance |
set video bitrate tolerance (in kbit/s) |
-maxrate bRate
-minrate bRate |
set maximum or minimum video bitrate tolerance (in kbit/s) |
-bufsize size |
set ratecontrol buffer size (in kByte) |
-sameq |
use same video quality as source (implies VBR) |
-newvideo |
add a new video stream to the current output stream |
Specialist Video filters
-vf vflip |
Flip the input video vertically |
-vf hflip |
Flip the input video horizontally |
-vf transpose=transSpec |
Rotates or flips input video |
transSpec is a list of values, colon separated. |
dir=N:passthrough=orientation
N = 0...7 ; passthrough is one of: none, portrait, landscape |
-vf delogo=sizeSpec:t=t:show:N |
Remove a logo from x,y for w,h pixels, with fuzzy band thickness t |
-vf removelogo=imgFile |
Use the black pixels in the bitmap image file to remove the logo |
-vf drawbox=sizeSpec:color@opacity |
draw a box border
colour specification 0xhex and opacity [0...1] |
sizeSpec is a list of values, colon separated. |
x=x:y=y
position from top left corner
w=width:h=height
width and height |
Audio Options
-ab bRate |
set audio bitrate (in kbit/s) |
-aframes N |
Set the number of audio frames to record. [an alias for -frames:a] |
-aq q |
Set the audio quality (codec-specific, VBR). [an alias for -q:a] |
-an |
Disable audio recording |
-acodec codec |
Set the audio codec. [an alias for -codec:a]
Use 'copy' to copy stream. |
-vol |
Change the audio volume in multiples of 256 where 256 = 100% (normal) volume. e.g. 512 = 200% |
-newaudio |
add a new audio stream to the current output stream |
-alang code |
set the ISO 639 language code (3 letters) of the current audio stream |
Useful examples
Transcode input file to DVD PAL format |
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 |
Convert to grayscale |
ffmpeg -y -i inFile -flags gray outFile |
Create 1 minute of audio noise |
ffmpeg -ar 48000 -t 60 -f s16le -acodec pcm_s16le -i /dev/urandom -ab 64K -f mp2 -acodec mp2 -y noise.mp2 |
Extract images from video |
ffmpeg -i foo.avi -r 1 -s WxH -f image2 outFile%03d.png |
Convert image file to other formats |
ffmpeg -i foo0122.png foo.tiff
pgm, ppm, pam, pgmyuv, jpeg, gif, png, tiff, sgi |
Convert images to AVI file |
ffmpeg -f image2 -i foo-%03d.jpeg -r 12 -s WxH foo.avi |
Convert a WAV file to MP3 |
ffmpeg -i source_song.wav -vn -ar 44100 -ac 2 -ab 192 -f mp3 final_song.mp3 |
Extract audio from a video, transcoding it to MP3 |
ffmpeg -i source.avi -vn -ar 44100 -ac 2 -ab 192 -f mp3 sound.mp3 |
Convert .avi to .flv |
ffmpeg -i source.avi -ab 56 -ar 44100 -b 200 -r 15 -s 320x240 -f flv output.flv |
Convert .avi to animated gif |
ffmpeg -i video.avi animated.gif |
Attach a picture to an mp3 |
ffmpeg -i input.mp3 -i cover.png -c copy -metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" out.mp3 |
Mix a video with a sound file |
ffmpeg -i song.wav -i source_video.avi outvideo.mpg |
Write an mp3 with an ID3v2.3 header and an ID3v1 footer |
ffmpeg -i inFile -id3v2_version 3 -write_id3v1 1 outFile.mp3 |
Concatenate input files |
cat inFile1 inFile2 | ffmpeg -f mpeg -i - -vcodec copy -acodec copy outFile.mpg |
Encode a clip with codec with bitrate, and mp3 audio |
ffmpeg -i clip.avi -vcodec libxvid -b 800000 -acodec libmp3lame -ab 128 new-clip.avi |
Merge audio stream with video stream from different files |
ffmpeg -i audioS.mp4 -i videoS.mp4 -c copy -map 0:a -map 1:v outFile.mp4 |
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