https://k2.ixota.com/index.php?action=history&feed=atom&title=Linux%2Fffmpeg 2026-06-26T12:11:01Z Revision history for this page on the wiki MediaWiki 1.33.1 https://k2.ixota.com/index.php?title=Linux/ffmpeg&diff=5699&oldid=prev 2020-08-17T02:05:50Z

<p><span dir="auto"><span class="autocomment">Extract Music from mp4</span></span></p> <p><b>New page</b></p><div>== Installation ==<br /> <br /> Ubuntu: [https://github.com/adaptlearning/adapt_authoring/wiki/Installing-FFmpeg] [https://askubuntu.com/questions/691109/how-do-i-install-ffmpeg-and-codecs] [https://www.faqforge.com/linux/how-to-install-ffmpeg-on-ubuntu-14-04/]<br /> sudo add-apt-repository ppa:mc3man/trusty-media <br /> sudo apt-get update <br /> sudo apt-get install ffmpeg <br /> # sudo apt-get install frei0r-plugins<br /> # sudo apt-get install ffmpeg gstreamer0.10-ffmpeg<br /> <br /> == convert flv to mp4 ==<br /> <br /> See [[flv]]<br /> <br /> == Extract Music from mp4 ==<br /> <br /> See [[mp4]]<br /> <br /> m4a:<br /> ffmpeg -i input.mp4 -vn -c:a copy output.m4a<br /> <br /> == jpeg slideshow ==<br /> <br /> mkdir show<br /> x=1 ; for i in *jpg; do counter=$(printf %05d $x); ln &quot;$i&quot; show/img&quot;$counter&quot;.jpg; x=$(($x+1)); done<br /> cd show<br /> ffmpeg -r 10 -i img%05d.jpg -c:v libx264 out.mp4<br /> <br /> ffmpeg -r 1/5 -start_number 2 -i img%03d.png -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4<br /> ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4<br /> <br /> ffmpeg -framerate 1/5 -i img%03d.png -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4<br /> <br /> ffmpeg -f image2 -i /tmp/img%03d.jpg /tmp/a.mpg<br /> <br /> ffmpeg -r 60 -f image2 -s 1920x1080 -i pic%04d.png -vcodec libx264 -crf 25 -pix_fmt yuv420p test.mp4<br /> # %04d means that zeros will be padded until the length of the string is 4<br /> # -r is the framerate (fps)<br /> # -crf is the quality, lower means better quality, 15-25 is usually good<br /> # -s is the resolution<br /> # -pix_fmt yuv420p specifies the pixel format, change this as needed<br /> <br /> References:<br /> * Using ffmpeg to convert a set of images into a video - http://hamelot.io/visualization/using-ffmpeg-to-convert-a-set-of-images-into-a-video/<br /> * FFmpeg create video from images - Stack Overflow - http://stackoverflow.com/questions/24961127/ffmpeg-create-video-from-images<br /> * linux - ffmpeg: create a video from images - Super User - http://superuser.com/questions/624567/ffmpeg-create-a-video-from-images<br /> * How to losslessly encode a jpg image sequence to a video in ffmpeg? - Video Production Stack Exchange - http://video.stackexchange.com/questions/7903/how-to-losslessly-encode-a-jpg-image-sequence-to-a-video-in-ffmpeg<br /> * Create a video slideshow from images – FFmpeg - http://trac.ffmpeg.org/wiki/Create%20a%20video%20slideshow%20from%20images<br /> <br /> == keywords ==</div>

Kenneth