GoToNextFrameAsync Lags

Question

I'm writing some frames to GIF file using BitmapEncoder. GoToNextFrameAsync runs very fast on most frames (<100ms), but sometimes will lag for several seconds on one frame.

A;
create_task(gifEncoder->GoToNextFrameAsync()).then([this]()
  {
   B;
  });
//long time between A and B ,may be up to 30 seconds lag

What may be wrong?

Or can I set the thread priority?

Thanks!

Answer 1

Hi Raptor K,

I dont think set thread priority will make sense, but you can give a try.

And can you try to use a for-loop instead of the .then() to see if the lag still exist?

Good luck

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James He
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Answer 2

How can I use a for-loop with the -Async API ?

When I use synchronous API (wic encoder) with for-loop, there is no such problem. Just an about 1 second lag on UI thread.

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Win8 Developer QQ Group 95331609