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Fixed in 2021.1.X

Fixed in 2019.4.X, 2020.2.X



Found in






Issue ID




[MacOS] VideoPlayer.frameReady event doesn't prepare a new frame when the dropped frame is skipped



How to reproduce:
1. Open the attached project (
2. Open the SampleScene from the Scene folder
3. Enter the Play mode

Expected result: The video plays without stopping.
Actual result: The video stops at the 28th frame.

Reproduced in: 2018.4.10f1, 2019.2.7f2, 2019.3.0b5, 2020.1.0a7.
Couldn't test with: 2017.4 (There's no option for "Skip On Drop" in the Video Player, which is connected to the issue)

1. The video always stops at the same frame, when playing back the video with the VideoPlayer.frameReady event
2. The option "Skip On Drop" can't be disabled on macOS MP4 video format
3. Although the "Skip On Drop" can't be disabled, it works just fine in the 2017.4 Unity stream where there isn't an option for it.
4. Couldn't reproduce the problem on Windows

  1. Resolution Note (fix version 2021.1):

    A rounding error in internal calculations for converting time values to frame indices was mapping 2 consecutive timestamps to the same frame index. Reworked how the calculation is done. Fixed in Unity 2020.2.0a1 and above

  2. Resolution Note (fix version 2021.1):

    Fixed in Unity 2021.1.0b5

  3. Resolution Note (fix version 2020.2):

    Fixed in Unity 2020.2.4f1

  4. Resolution Note (fix version 2019.4):

    Fixed in Unity 2019.4.19f1

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