You’ll need to reencode. Set x264’s keyint parameter to 5*fps and disable scenecut. If your fps is 24 for example : ffmpeg -i <input> -vcodec libx264 -x264-params keyint=120:scenecut=0 -acodec copy out.mp4 This is obviously not optimal for quality but it’ll match your demand. Edited to change no-scenecut to scenecut=0, as per sigh-boy suggestion.
You can display the timestamp for each frame with ffprobe with awk to only output key frame info. Works in Linux and macOS. ffprobe -loglevel error -select_streams v:0 -show_entries packet=pts_time,flags -of csv=print_section=0 input.mp4 | awk -F’,’ ‘/K/ {print $1}’ Or a slower method that works on any OS and does not require awk or similar … Read more
Okay, not what your actual code looks like, but you can’t throw JavaScript variables into CSS, it won’t recognize them. Instead, you need to create the CSS rules through JavaScript and insert them into the CSSOM (CSS Object Model). This can be done a few ways — you can either just create a keyframe animation … Read more
The latest builds of FFMPEG include a new option “segment” which does exactly what I think you need. ffmpeg -i INPUT.mp4 -acodec copy -f segment -vcodec copy -reset_timestamps 1 -map 0 OUTPUT%d.mp4 This produces a series of numbered output files which are split into segments based on Key Frames. In my own testing, it’s worked … Read more
Create another CSS animation called fadeOut, say. Then when you want to remove the element, change the animation property on the element to that new animation, and use the animationend event to trigger the actual removal of the element once the animation is done: $(‘.hide’).click(function() { if (!$(this).hasClass(‘disabled’)) { $(‘#fill’).css(‘-webkit-animation’, ‘fadeOut 500ms’); $(‘#fill’).bind(‘webkitAnimationEnd’,function(){ $(‘#fill’).remove(); $(‘.show, … Read more
I always set preload class to body with animation time value 0 and its working pretty well. I have some back going transitions so I have to remove load animation to them too. I solved this by temporary setting animation time to 0. You can change transitions to match yours. HTML … <body class=”preload”>… CSS … Read more
add this styles animation-iteration-count: infinite;
Here is how you implement css keyframes in the Sass syntax: @keyframes name-of-animation 0% transform: rotate(0deg) 100% transform: rotate(360deg) Here is a Sass mixin to add vendor prefixes: =keyframes($name) @-webkit-keyframes #{$name} @content @-moz-keyframes #{$name} @content @-ms-keyframes #{$name} @content @keyframes #{$name} @content Here’s how to use the mixin in Sass syntax: +keyframes(name-of-animation) 0% transform: rotate(0deg) 100% … Read more