how can i check videoSrc is right(when src is wrong, the videocontext is stop, can get me some prompt)

[bbc]

how can i check videoSrc is right(when src is wrong, the videocontext is stop, can get me some prompt)

[Statfine]

@MatthewShotton
const urlOne = 'rightUrl';
const urlTwo = 'wrongUrl'
const node = this.ctx.video(urlOne, 0, 4, { volume: 0.8, loop: false });
node.startAt(0);
node.stopAt(15);

const nodeTwo = this.ctx.video(urlTwo, 0, 4, { volume: 0.8, loop: false });
nodeTwo.startAt(15);
nodeTwo.stopAt(30);

node.connect(this.ctx.destination);
nodeTwo.connect(this.ctx.destination);
this.ctx.play();

[Statfine]

thanks, VideoContext is still playing when source nodes throws an error after i update it to v0.38.2.It's very helpful for me

[MatthewShotton]

Hi @Statfine

Thanks for raising this. I've just pushed a new release, v0.36.0 which adds an error callback to nodes which will get thrown if content cannot be loaded for a specific node. It can be used like the following:

this.ctx = new VideoContext();
let video = ctx.video("./errorvideo.mp4");
video.start(0);

video.registerCallback("error", (n)=>{
    console.log("Error with node", n);
   // Destroy the node so it doesn't try and play and cause the videocontext to stall.
    n.destroy();
});

The error callbacks will be called as soon as the VideoContext tries to load the source node (this is usually approximately 4 seconds before it is due to be played, and will be shortly after the "load" callback gets triggered on the node).

Currently you have to call destroy() or resetTimelineState() on a node which throws an error otherwise the VideoContext will continue trying to play it which will cause the VideoContext to halt.

Does that help with your requirements?

Kind regards,
Matt

[Statfine]

@MatthewShotton can videoContext still play if i don't do n.destroy() when video.registerCallback("error",...); just don't show frame

[MatthewShotton]

@Statfine I've just pushed a change to v0.38.0 which will let the VideoContext continue playing if one of the source nodes throws an error. Let me know if you have any problems with it. Cheers!

[Statfine]

i have update it to v0.38.0; but the VideoContext is not playing when source nodes throws an error, should i use something function to continue

[MatthewShotton]

hi @Statfine , I've pushed v0.38.1 which adds some extra checks for testing if a video node is not valid.

If that doesn't fix the problem are you able to put together a minimal example that demonstrates the problem you're seeing? I'm having trouble re-creating the exact error you have.

[MatthewShotton]

@Statfine I've just published v0.38.2 to npm/github. Let me know if you have any luck with that!

I'm not sure why my original test code failed to catch this, but the code you've sent has replicated the issue well enough to hopefully fix it.