syncing multiple media on one timing src

[augustblack]

Hi,

Thanks again for this great library.

I'm trying some new things out and wanted to see if I could sync multiple media on one looping time src. I want to skew each media based on when they should start in the loop.

I do:

const loopLength = 20
const timingObject = new TimingObject()
const loopTime = new LoopConverter(timingObject, [0, loopLength])

const player = new window.Audio(url)
const sync = new MCorp.mediaSync(player, loopTime, {skew}) 

However, when I do so (skew is a positive number between 0 and loopLength), nothing plays - I hear no audio.

If I remove the skew and only do const sync = new MCorp.mediaSync(player, loopTime)

I can at least hear the audio play, but all of the media start at 0 in the loopTime.

If I set the skew to be negative and do const sync = new MCorp.mediaSync(player, loopTime, {skew: -1 * skew})

It kind of works, but does a bunch of funny things.

Any advice on how I might proceed?

[ingararntzen]

Hi August.

Not sure whats going on there. Here are few things to check.

There are trouble with syncing with Safari right now, so make sure to test using some other browser.

To debug this

• verify that sync works as expected with a plain timing object within relevant range
• verify that the timing object given to media sync provides the values you expect.

You could for instance avoid using the skew property of media sync, and instead make sure that the skew is reflected in the input timing object, for instance by using a skewconverter, or by adding skew to the loop range

let range = [0+skew, loopLength+skew];
const loopTime = new LoopConverter(timingObject, range)

[augustblack]

Hi Ingar,

Thanks so much for the response.

For now, I am using a recent chrome browser. But, I would like it to work on Safari too, if possible. Safari on iOS is the only browser that can do getUserMedia.

I tried what you suggested, but it does not play the audio.

I've also tried using a skew converter, but with the same effect of no playback.

I can only get audio playback using the loop timing if there is no skew involved.

Is skew supposed to be a positive or negative number?