Playback is broken when building with 2017.2

[OlivierNemoz]

Playback stutters when running the built version.

To reproduce the problem, load the example from the asset store in 2017.2.0f3. Launch in the editor, notice that the playback is working. Build & run the same project, and notice that the playback stalls almost to a halt.

The problem is not reproducible in 2017.1

[vrterritory]

Reporting the same thing happens for me too.

I traced the problem down to:

nativeSetVideoTime(decoderID, (float) setTime); GL.IssuePluginEvent(GetRenderEventFunc(), decoderID);

So it seems to be an issue somewhere inside ViveMediaDecoder.cpp

[kyo8568131]

Hi, I cannot reproduce the issue using Unity 2017.2.0f3. Please help to provide more details or video. Thanks.

[vrterritory]

Kyo: have you tried to build the project? It works well in the Editor, but when you build the project and run the exe outside of Unity, its lagging like crazy (no way to not notice the issue).

[kyo8568131]

Yes, I had build the project and it works normally. My test environment is Win 7 64 bits. Test video formats are mp4 and webm. Both work fine.

[vrterritory]

I just prepared a quick example: https://synthesisvr.com/dl/ViveMediaDecoder-Bug.7z

It contains both the full project + the build. The video path is set to F:\ViveMediaDecoder-Bug\build\5_movie480.mp4

My env is Win10 Home (x64), Unity 2017.2.0f3 (same issue reproduced on 2017.3 beta)

[kyo8568131]

It still works smoothly in my environment. Maybe it relate to OS. I will do further test to figure out the issue.

[vrterritory]

That's weird, because in Win10, it works well with Unity 2017.1 as well as 5.x. So it seems to be an issue when everything is on the latest version.. including the OS.

[OlivierNemoz]

Same here, noted that on Windows 10.

[kyo8568131]

Hi, Please help to replace the dlls with FFmpeg 3.4 official build and try again. You can download it from https://ffmpeg.zeranoe.com/builds/ Thanks.

[vrterritory]

Thanks @kyo8568131

That works! Despite I had to stick with the default Unity player and do some nasty video transcoding in the backend, I'll consider migrating over to ViveMedia.

[kyo8568131]

Great! I will update the plugin document and asset. Thanks.