VideoPlayer WebGl stuttering

Unity Engine
1

Hi,

I am using VideoPlayer to play a video from URL in Unity 2017.3 - WebGl.
In the editor and chrome, it works fine but in firefox there is a strange stuttering.

Any ideas?

2

Same here.
Addressed in Unity Issue Tracker - [Firefox] VideoPlayer has an occasional choppy playback

Don’t experct anyone official to help. This video player is unstable since it came out initially nearly 1 1/2 years before. No official Unity dev has really helped since…

3

How on earth is that “BY DESIGN” ??

(in 2020, I’m seeing this bug still fully present and correct in 2019.latest - this is the live version of Unity, actively releasing new builds, and it seems to have this 3+ years old bug that they won’t fix?)

4

my friend is also facing something like same problem if you found let me know.

5

Only fix that worked for me in firefox webgl build was to re encode the videos to webM format VP8.
I used a Free WebM Encoder to convert the mp4 files.
I renamed the webM extension back to mp4 and uploaded the files does not stutter anymore.

1 Like
6

It is marked as “by design” because it is not a Unity issue but a Firefox bug they say:
RESOLUTION NOTE (2020.2.X):
Debugged this to be a video playback bug in Firefox. Upstream bug report registered to https://bugzilla.mozilla.org/show_bug.cgi?id=1667644

2 Likes
7

That’s not really ‘by design’, I’m amused that someone was able to use that code. If an upstream library I’m using has a bug, that makes my software break, it’s still a bug in my software!

How did you find out what the resolution note is? I can’t see that when I click on the Unity issue-tracker link.

8

Sorry, I thought it was the issue linked above. Here is the actual issue referencing the Firefox bug:
https://issuetracker.unity3d.com/issues/webgl-videoplayer-is-stuttering-on-webgl-builds-when-using-firefox-browser

I suppose “by-design” implies that the fix does not require any changes on Unity side.