Improve video render algorithm to avoid dropped frames

[MarekLuxoft]

The reason of creating this PR is problem with huge amount of dropped frames observed on refresh rate 120Hz for 60fps with viewport different than 4K. For lower refresh rate and/or different fps problem didn't occur also for viewport 4K we didn't observe issue like that.

Video frames are synced to the audio timestamp. However, the audio timestamp is not queried at a consistent interval. For example, if the query intervals are 16ms, 17ms, 16ms, 17ms, etc., then a 60fps video may display even frames twice and drop odd frames.

To improve video render algorithm to avoid dropped frames we:

1. Favor advancing the frame sooner. This addresses the situation where the audio timestamp query interval is a little shorter than a frame. These favors displaying the next frame over displaying the current frame twice (or more).
2. Favor displaying the frame for a little longer. This addresses the situation where the audio timestamp query interval is a little longer than a frame.

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[victorpasoshnikov]

Could you explain why rendering algorithm work correctly in one case (so called "Old TV" and becomes wrong for "New TV" ?
The renderer has 2 queue (audio and video) as input and their timestamps don't depend on anything except ones in the source stream. Why in the second case we get problem? What changed?

[MarekLuxoft]

Could you explain why rendering algorithm work correctly in one case (so called "Old TV" and becomes wrong for "New TV" ?

if we are talking about 120Hz, then it doesn't work correctly for all TV (for viewport 1k, 2k with 60fps), as described here:

huge amount of dropped frames observed on refresh rate 120Hz for 60fps with viewport different than 4K. For lower refresh rate and/or different fps problem didn't occur also for viewport 4K we didn't observe issue like that.

[MarekLuxoft]

During collection data for this PR I notice strange behave around samples. I will temporary close this ticket until I finish investigation this.