Re: 60fps and higher animated webp files

[Urvang Joshi]

Hi,

As can be seen from the WebP container specification, The 'frame duration' field in ANMF chunk is in 1ms units. (GIF has 10ms units).

So, theoretically one can have 1ms delay (or even a 0ms delay) between frames, which will be equivalent to 1000fps.

However, as far as I know, all web browsers today allow a minimum frame delay of 10ms in animated images -- that is, if any animation has a <10ms delay between frames, it will still play as if it had a 10ms delay between frames. This is to prevent excessive CPU usage.

Also, if you are thinking about 100fps or 200fps type of animations, it is likely that the animation will have a large number of frames (e.g. 500 or 1000 frames). For such large animations, choosing a video format may be a better choice.

Thanks,

Urvang

On Thu, Mar 13, 2014 at 3:14 PM, fex <file....@gmail.com> wrote:

I would like to create some 60fps animated webp files and consider this an advantage over GIF which is limited to 50fps. Down the track I may even want 100fps or even 200fps. Is there any limitations preventing me from doing this and could I even use Chrome to play the animation at that speed?

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