Commands tagged ffmpeg (83)

  • Get video information with ffmpeg

    Fix for PHP Shell Exec: ffmpeg -i input.mp4 -f null /dev/null 2>&1 shell_exec("ffmpeg -i input.mp4 -f null /dev/null 2>&1"); Show Sample Output


    0
    ffmpeg -i input.mp4 -f null /dev/null
    Dipo · 2018-11-06 13:44:46 444
  • Convert ogg to mp3

    Converts all ogg files to mp3 files in the current directory.


    -1
    for x in *.ogg; do ffmpeg -i "$x" "`basename "$x" .ogg`.mp3"; done
    Superhuman · 2009-09-04 20:23:09 7
  • Get video information with ffmpeg

    mp4box is great when working with mp4s


    -1
    mp4box -info video.mp4
    alienresident · 2013-01-18 14:43:29 5
  • Rotate a video file by 90 degrees CW

    Transpose parameter: 0 = 90CounterCLockwise and Vertical Flip (default) 1 = 90Clockwise 2 = 90CounterClockwise 3 = 90Clockwise and Vertical Flip


    -1
    ffmpeg -i in.mov -vf "transpose=1" out.mov
    malathion · 2019-09-02 04:54:31 293
  • Download screenshot or frame from YouTube video at certain timestamp

    Downloads the frame of given YouTube video at 8 minutes 14 seconds. Requested format is "299", which 1080p only video.


    -1
    ffmpeg -ss 8:14 -i $(youtube-dl -f 299 --get-url URL) -vframes 1 -q:v 2 out.jpg
    bugmenot · 2021-07-06 10:59:49 195
  • Generate a GIF image from video file

    The 30 means start extracting frames from 30 seconds into the video. The 3 means extract the next 3 seconds from that point. The fps can be adjusted based on your preferences. The 320 is the width of the gif, the height will be calculated automatically. input.mp4 is the video file, which can be any video file ffmpeg supports. The output.gif is the gif created.


    -1
    ffmpeg -ss 30 -t 3 -i input.mp4 -vf "fps=10,scale=320:-1:flags=lanczos,split[s0][s1];[s0]palettegen[p];[s1][p]paletteuse" -loop 0 output.gif
    keyboardsage · 2024-03-19 00:34:23 48
  • Press enter and take a WebCam picture.

    Take a picture from your webcam and save it to a jpeg. A very slightly modified version of MarxBro's command.


    -3
    -y -r 1 -t 3 -f video4linux2 -vframes 1 -s sxga -i /dev/video0 ~/webcam-$(date +%m_%d_%Y_%H_%M).jpeg
    navyjeff · 2013-02-27 05:32:03 4
  • Convert a bunch of oggs into mp3s


    -5
    for x in *.ogg; do ffmpeg -i "$x" "`basename "$x" .ogg`.mp3"
    iain · 2009-03-23 10:19:12 5
  • ‹ First  < 2 3 4

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Print all git repos from a user (only curl and grep)

files and directories in the last 1 hour
added alias in ~/.bashrc alias lf='find ./* -ctime -1 | xargs ls -ltr --color'

Make vim open in tabs by default (save to .profile)
I always add this to my .profile rc so I can do things like: "vim *.c" and the files are opened in tabs.

Install pip with Proxy
Installs pip packages defining a proxy

Analyse writing style of writing style of a document
Style analyses the surface characteristics of the writing style of a document. It prints various readability grades, length of words, sentences and paragraphs. It can further locate sentences with certain characteristics. If no files are given, the document is read from standard input. style is part of "diction" package

Remove old unused kernels from Red Hat Enterprise Linux 5 & Fedora 12/13
Install using yum install yum-utils Options include: --oldkernels Remove old kernel and kernel-devel packages --count=KERNELCOUNT Number of kernel packages to keep on the system (default 2) use package-cleanup --help for a complete list

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

list files recursively by size

command line to optimize all table from a mysql database

power off system in X minutes
Replace 60 with the number of minutes until you want the machine to shut down. Alternatively give an absolute time in the format hh:mm (shutdown -h 9:30) Or shutdown right away (shutdown -h now)

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: