Commands matching ffmpeg sorted by votes

Commands matching ffmpeg (189)

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Record a screencast and convert it to an mpeg

Grab X11 input and create an MPEG at 25 fps with the resolution 800x600
This is sample output - yours may be different.
51

ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg

dcabanis · 2009-06-05 21:11:17 16
Cut out a piece of film from a file. Choose an arbitrary length and starting time.

With: -vcodec, you choose what video codec the new file should be encoded with. Run ffmpeg -formats E to list all available video and audio encoders and file formats. copy, you choose the video encoder that just copies the file. -acodec, you choose what audio codec the new file should be encoded with. copy, you choose the audio encoder that just copies the file. -i originalfile, you provide the filename of the original file to ffmpeg -ss 00:01:30, you choose the starting time on the original file in this case 1 min and 30 seconds into the film -t 0:0:20, you choose the length of the new film newfile, you choose the name of the file created. Here is more information of how to use ffmpeg: http://www.ffmpeg.org/ffmpeg-doc.html
This is sample output - yours may be different.
22

ffmpeg -vcodec copy -acodec copy -i orginalfile -ss 00:01:30 -t 0:0:20 newfile

ako · 2009-03-16 12:58:07 18
Extract audio from Flash video (*.flv) as mp3 file
This is sample output - yours may be different.
18

ffmpeg -i video.flv -vn -ar 44100 -ac 2 -ab 192k -f mp3 audio.mp3

oldo · 2012-01-14 18:34:51 7
Extract audio from a video
This is sample output - yours may be different.
15

ffmpeg -i video.avi -f mp3 audio.mp3

ryrys · 2009-02-19 16:45:05 31

Play music from youtube without download

Show Sample Output

wget -q -O - `youtube-dl -b -g $url`| ffmpeg -i - -f mp3 -vn -acodec libmp3lame -| mpg123 -

torrid · 2009-11-07 13:45:13 23

Press enter and take a WebCam picture.

This command takes a 1280x1024 p picture from the webcam. If prefer it smaller, try changing the -s parameter: qqvga is the tiniest, vga is 640x480, svga is 800x600 and so on. Get your smile on and press enter! :)
This is sample output - yours may be different.
14

read && ffmpeg -y -r 1 -t 3 -f video4linux2 -vframes 1 -s sxga -i /dev/video0 ~/webcam-$(date +%m_%d_%Y_%H_%M).jpeg

MarxBro · 2013-01-17 11:37:09 14
for all flv files in a dir, grab the first frame and make a jpg.

This is handy for making screenshots of all your videos for referring to in your flv player.
This is sample output - yours may be different.
12

for f in *.flv; do ffmpeg -y -i "$f" -f image2 -ss 10 -vframes 1 -an "${f%.flv}.jpg"; done

topher1kenobe · 2009-05-18 22:34:59 9
Capture video of a linux desktop

Proper screencast with audio using ffmpeg and x264, as per http://verb3k.wordpress.com/2010/01/26/how-to-do-proper-screencasts-on-linux/
This is sample output - yours may be different.
12

ffmpeg -y -f alsa -ac 2 -i pulse -f x11grab -r 30 -s `xdpyinfo | grep 'dimensions:'|awk '{print $2}'` -i :0.0 -acodec pcm_s16le output.wav -an -vcodec libx264 -vpre lossless_ultrafast -threads 0 output.mp4

NoahY · 2010-11-19 09:31:56 8
Convert .wma files to .ogg with ffmpeg
This is sample output - yours may be different.
11

find -name '*wma' -exec ffmpeg -i {} -acodec vorbis -ab 128k {}.ogg \;

muadib · 2009-02-28 20:45:19 18
play high-res video files on a slow processor

Certain codecs in high res don't play so well on my Dell Mini 9. Using this command, I can play just about anything and it keeps the sound in sync to boot!
This is sample output - yours may be different.
11

mplayer -framedrop -vfm ffmpeg -lavdopts lowres=1:fast:skiploopfilter=all

baergaj · 2009-04-27 15:40:55 10
Convert all JPEG images to MP4

Source: http://superuser.com/a/624574
This is sample output - yours may be different.
9

cat *.jpg | ffmpeg -f image2pipe -r 1 -vcodec mjpeg -i - -vcodec libx264 out.mp4

auriza · 2015-10-12 02:46:14 10
Convert an image sequence into a video
This is sample output - yours may be different.
9

ffmpeg -framerate 30 -pattern_type glob -i '*.jpg' -c:v libx264 -pix_fmt yuv420p out.mp4

alikhalil · 2022-11-14 07:20:53 805
Dumping Audio stream from flv (using ffmpeg)
This is sample output - yours may be different.
8

ffmpeg -i <filename>.flv -vn <filename>.mp3

mohan43u · 2009-05-15 05:03:30 8
Android PNG screenshot

Works with *rooted* Android devices. 400x800 are the screen dimensions of a typical handheld smartphone.
This is sample output - yours may be different.
8

adb pull /dev/graphics/fb0 /dev/stdout | ffmpeg -vframes 1 -vcodec rawvideo -f rawvideo -pix_fmt rgb32 -s 480x800 -i pipe:0 -f image2 -vcodec png screenshot.png

mhs · 2012-12-26 13:21:18 23
Quick and dirty convert to flash

This converts any media ffmpeg handles to flash. It would actually convert anything to anything, it's based on the file extension. It doesn't do ANY quality control, sizing, etc, it just does what it thinks is best. I needed an flv for testing, and this spits one out easily.
This is sample output - yours may be different.
7

ffmpeg -i inputfile.mp4 outputfile.flv

topher1kenobe · 2009-09-10 14:49:14 9
cut audio file
This is sample output - yours may be different.
7

ffmpeg -ss 00:00:30 -t 00:02:58 -i input.mp3 -acodec copy ouput.mp3

kev · 2011-09-03 14:12:31 5
Recording the desktop and an application audio source for webcast

You will have to use the sound preferences (record) to choose the audio source and set it to internal.
This is sample output - yours may be different.
7

ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 30 -s 1024x768 -i :0.0 -acodec pcm_s16le -vcodec libx264 -vpre lossless_ultrafast -threads 0 ./Desktop/mydesktop.mkv

dcabanis · 2011-09-29 19:50:41 6
concat multiple videos into one (and add an audio track)

This is an extract from a larger script which formats the video for DVD. The videos I use have no audio track so I need to add one. Tweak as you like...
This is sample output - yours may be different.
6

cat frame/*.mpeg | ffmpeg -i $ID.mp3 -i - -f dvd -y track/$ID.mpg 2>/dev/null

pamirian · 2009-08-04 06:31:50 5
Capture video of a linux desktop
This is sample output - yours may be different.
6

ffmpeg -f x11grab -s `xdpyinfo | grep 'dimensions:'|awk '{print $2}'` -r 25 -i :0.0 -sameq /tmp/out.mpg > /root/howto/capture_screen_video_ffmpeg

brubaker · 2010-03-27 21:31:34 6

Get video information with ffmpeg

ffprobe is specially intended to get video information Show Sample Output

ffprobe video.flv

clusterdoc · 2012-01-02 19:56:20 20

Creating A Single Image Video With Audio via ffmpeg
This is sample output - yours may be different.
6

ffmpeg -loop 1 -i image.png -i sound.mp3 -shortest video.mp4

ekinertac · 2013-04-23 20:20:33 14
Download Video & extract only a specific Time of it

Because this does not download more of the video than necessary, it is faster (especially with long videos).
This is sample output - yours may be different.
6

yt-dlp --external-downloader ffmpeg --external-downloader-args "-ss 00:05:00 -t 00:01:00" "https://www.youtube.com/watch?v=Y6DGABIcB3w"

malathion · 2023-09-16 18:04:12 87
Convert .flv to .3gp

Download YouTube videos as .flv and convert them to .3gp for your mobile phone.
This is sample output - yours may be different.
5

ffmpeg -i file.flv -r 15 -b 128k -s qcif -acodec amr_nb -ar 8000 -ac 1 -ab 13 -f 3gp -y out.3gp

jjclarkson · 2009-03-23 14:30:45 6
extracting audio and video from a movie

rips the audio and video stream of a movie. The two streams are stored separately.
This is sample output - yours may be different.
5

ffmpeg -i source_movie.flv -vcodec mpeg2video target_video.m2v -acodec copy target_audio.mp3

dcabanis · 2009-05-23 23:52:51 6
Create a thumbnail from a video file
This is sample output - yours may be different.
5

thumbnail() { ffmpeg -itsoffset -20 -i $i -vcodec mjpeg -vframes 1 -an -f rawvideo -s 640x272 ${i%.*}.jpg }

Nicolargo · 2009-11-09 09:42:55 8
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Bare Metal IRC Client

Uses the extremely cool utilities netcat and expect. "expect" logs in & monitors for server PING checks. When a PING is received it sends the PONG needed to stay connected. IRC commands to try: HELP, TIME, MOTD, JOIN and PRIVMSG The "/" in front of IRC commands are not needed, e.g. type JOIN #mygroup Learn about expect: http://tldp.org/LDP/LGNET/issue48/fisher.html The sample output shows snippets from an actual IRC session. Please click UP button if you like it!

happened to find this not bad software to keep my files and folders safe! Even the free trial version has the fantastic functions to protect any private files from being seen by anyone except me. With it I can encrypt, hide or lock anything I want, amazin

I noticed some spammer posted an advertisement here for "not bad" encryption. Unfortunately, their software only runs under Microsoft Windows and fails to work from the commandline. My shell script improves upon those two aspects, with no loss in security, using the exact same "military-grade" encryption technology, which has the ultra-cool codename "ROT-13". For extra security, I recommend running ROT-13 twice.

full path listing in /directory/path/* of javascript files.

file listing in /directory/path/* of specific files such as javascript(js) .

list files recursively by size

access to last touched or created file with arrow_up_key immediately after displaying the file list

Display recursive file list (newest file displayed at the end) and be free to access last file in the list simply by pressing arrow_up_key i.e. open it with joe editor. BTW IMHO the list of files with newest files at the end is often more informative. Put this 'lsa' function somewhere in your .bashrc and issue $ . ~/.bashrc or $ source ~/.bashrc to have access to the 'lsa' command immediately. . (the function appends command "joe last_file_in_the_list" at the end of command history)

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Recover a deleted file

grep searches through a file and prints out all the lines that match some pattern. Here, the pattern is some string that is known to be in the deleted file. The more specific this string can be, the better. The file being searched by grep (/dev/sda1) is the partition of the hard drive the deleted file used to reside in. The ?-a? flag tells grep to treat the hard drive partition, which is actually a binary file, as text. Since recovering the entire file would be nice instead of just the lines that are already known, context control is used. The flags ?-B 25 -A 100? tell grep to print out 25 lines before a match and 100 lines after a match. Be conservative with estimates on these numbers to ensure the entire file is included (when in doubt, guess bigger numbers). Excess data is easy to trim out of results, but if you find yourself with a truncated or incomplete file, you need to do this all over again. Finally, the ?> results.txt? instructs the computer to store the output of grep in a file called results.txt. Source: http://spin.atomicobject.com/2010/08/18/undelete?utm_source=y-combinator&utm_medium=social-media&utm_campaign=technical

Download entire website for offline viewing

?mirror : turn on options suitable for mirroring. -p : download all files that are necessary to properly display a given HTML page. ?convert-links : after the download, convert the links in document for local viewing. -P ./LOCAL-DIR : save all the files and directories to the specified directory.

Find files changed between dates defined by ctime of two files specified by name

This command finds all the files whose status has changed between the ctime of the older and newer . Very useful if you can see from an ls listing a block of consecutive files you want to move or delete, but can't figure out exactly the time range by date.

Count threads of a jvm process

if you have problem threads problem in tomcat

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Commands matching ffmpeg (189)

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