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Duplicate

Votes

0

Found in

2018.4

2019.4

2020.2

2021.1

2021.2

2021.2.0a6

Issue ID

1316931

Regression

No

Video Player displays a wrong frame when changing VideoPlayer.frame using a non-transcoded video

Video

-

Reproduction steps:
1. Download and open the attached project "VideoPlayer_Bug_Report.zip"
2. Open the Video scene
3. Enter Play mode
4. Press Video Non-Transcoded
5. Press Prepare
6. Press Play
7. Press Pause
8. Press Seek to frame 100

Expected result: OnFrameReady is logged for frame 100 and 100 is displayed in the Game view
Actual result: OnFrameReady is logged for frame 99 and 97 is displayed in the Game view

Reproducible with: 2018.4.32f1, 2019.4.21f1, 2020.2.6f1, 2021.1.0b8, 2021.2.0a6

  1. Response avatar

    Resolution Note:

    This results from the H.264 video track having b-frames, which hits a Microsoft H.264 decoder bug. The mitigation is to issue an informational message about why this is happening. Transcoding to H.264 using the base profile instead of the (main profile, like here) fixes the issue. The transcoding can be done either in the Unity video clip importer or outside of Unity.

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