Commands tagged ffmpeg (83)

  • convert ogg files to mp3 preserving the id3v2 tags

    Converts an OGG file to MP3 at desired quality, preserving the id3v2 tags.


    0
    ffmpeg -i input.ogg -ab 256k -map_metadata 0:s:0 output.mp3
    woohoo · 2018-08-11 21:44:27 0
  • 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 0
  • 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.


    0
    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 1
  • 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 3
  • Get video information with ffmpeg

    mp4box is great when working with mp4s


    -1
    mp4box -info video.mp4
    alienresident · 2013-01-18 14:43:29 0
  • 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 0
  • 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 0
  • 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 1
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Convert control codes to visible Unicode Control Pictures
Converts control codes and spaces (ASCII code ≤ 32) to visible Unicode Control Pictures, U+2400 ? U+2420. Skips \n characters, which is probably a good thing.

extract audio from flv to mp3

Update IP filter for qBittorrent
Downloads Bluetack's level 1 IP blocklist in .p2p format, suitable for various Bittorrent clients.

In (any) vi, add a keystroke to format the current paragraph.
That goes into your $HOME/.exrc file. " Nice macro to reformat lines: map ^A !}fmt Note that the ^A has to be input by typing ^V^A.

Find the package that installed a command

a function to find the fastest DNS server
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list.

Delete all files found in directory A from directory B
This command is useful if you accidentally untar or unzip an archive in a directory and you want to automatically remove the files. Just untar the files again in a subdirectory and then run the above command e.g. $ for file in ~/Desktop/temp/*; do rm ~/Desktop/`basename $file`; done

Add a progress counter to loop (see sample output)
For this hack you need following function: $ finit() { count=$#; current=1; for i in "$@" ; do echo $current $count; echo $i; current=$((current + 1)); done; } and alias: $ alias fnext='read cur total && echo -n "[$cur/$total] " && read' Inspired by CMake progress counters.

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"

Limit the cpu usage of a process
Similar to `cpulimit`, although `prlimit` can be found shipped with recent util-linux. Example: limit CPU consumption to 10% for a math problem which ordinarily takes up 100% CPU: Before: $ bc -l

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