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’t apply an easing function over a series of keyframes because you’re specifically telling the object to be at a specific point at a specific time. If you applied, say, an ease-in over a series of keyframes, then at 25% the object would behind it’s required “checkpoint”, eventually accelerating until catching up at 100%. … Read more
You cannot animate same attribute ( here transform attribute ) more than once, on a same element, the last one will overwrite other, You should put your target element into a div, and apply one transform-animation on the div and other transform-animation on the target element…. .div_class { animation:animate1 1000ms linear infinite; } .element { … Read more
This can be achieved by defining variables using (as of writing this, not well-supported) @property, which allows declaring types and that allows the browser to “understand”, for example, that a certain property (variable) is a Number and then it can gradually animate/transition that variable. Example Code: @property –opacity { syntax: ‘<number>’; /* <- defined as … Read more
To create a circle that gradually draws it’s outer path, use SVG. SVG’s stroke-dasharray property will turn any path into a dashed line, which you can use to your advantage by setting the dash size to be almost as long as the path itself. Then use a CSS animation to gradually change the stroke-dashoffset to … Read more
Found the solution. In Safari when you use Keyframes you need to use the whole percentage: this won’t work: @-webkit-keyframes keyarm { 0% { -webkit-transform: rotate(0deg); } 5% { -webkit-transform: rotate(-14deg); } 10% { -webkit-transform: rotate(0deg); } } this will: @-webkit-keyframes keyarm { 0% { -webkit-transform: rotate(0deg); } 5% { -webkit-transform: rotate(-14deg); } 10% { … Read more
An idea is to consider gradient coloration with background-clip: text applied to an inline element. body { background: #3498db; font-family: sans-serif; } h1 { font-size: 5em; } h1 span { background: linear-gradient(#fff,#fff) left no-repeat rgba(0, 0, 0, .3); background-size:0% 100%; -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; animation:loading 5s forwards linear; } @keyframes loading … Read more
Overview A CSS property transition on an element is hardware-accelerated if all these conditions are met: Hardware-accelerated layer compositing is enabled in the browser The CSS property being transitioned is acceleratable The element has been given its own compositing layer Generally, the requirements for these conditions are: The relevant hardware-acceleration options must be enabled, and … Read more
When you trigger GPU compositing (eg, through CSS animation), the browser sends that element to the GPU, but also anything that would appear on top of that element if its top/left properties were changed. This includes any position:relative elements that appear after the animating one. The solution is to give the animating element position:relative and … Read more
Use keyframes and animation property p { font-family: monospace; font-size: 3em; animation: color-change 1s infinite; } @keyframes color-change { 0% { color: red; } 50% { color: blue; } 100% { color: red; } } <p>lorem ipsum</p> CSS With Prefixes p { -webkit-animation: color-change 1s infinite; -moz-animation: color-change 1s infinite; -o-animation: color-change 1s infinite; -ms-animation: … Read more