Timing object with frame counter representation

[Adam-Oudaimah-SCASE]

Hello,
I am using this equation Math.floor(to.query().position * 20) to get the current frame number from a video.
The problem is that the position is not an integer number so I sometimes get the previous frame.
I know that the position, in this case, represents the currentTime of the video (which is a float number) that why I'm getting this error.
Is there a way to make the position in the TimingObject to represent the frame number?

[ingararntzen]

Hi.

Keep in mind that the Timing Object represents a logical timeline linked to a clock (e.g. performance.now()), whereas the timeline of the video (e.g. frame numbers) is a bit more wiggly in playback. Even if you sync the video to the timing object - the diff will likely be non-zero at any time. So - during playback you should regard your timing object as an approximation of the video offset - or vice versa.

Also

• there are no integer type in Javascript - numbers are all floats
• from your equation: are you sure the framerate is 20? 24 or 25 are much more common values

[ingararntzen]

Here's a link with a lot more on this by the way.

w3c/media-and-entertainment#4