Video App Crash with Videoplayer

Hi!

Thanks for bringing this to our attention. You mention you are using "a lot of videoplayers": if too many players are active at the same time (video is prepared and playing or paused), this may exceed the device's capabilities which will often lead to a crash. The better approach is to have the minimal number of playbacks active at once, since some older/low-capability devices can be limited to as low as 1-2 movies at the same time. To make things even more delicate, there is no way on these devices to know about the limit ahead of time (it may depend on resolution, actual codec and so on) so you need to be cautious.

So after checking that you indeed have minimized the number of concurrently active playbacks, if you still get this crash, please submit a bug report with a minimal project that demonstrates the issue and we'll be able to have a look.

Hope this helps!

Dominique Leroux
A/V developer at Unity

 

OK, thanks for the clarification.

And you're positive it's because of the VideoPlayer (e.g.: disabling the VideoPlayer removes the crash)? There are indeed a good number of seemingly-video-related messages in the log, but the Android device's video backend shipped with the OS is typically quite chatty so it's hard to be sure.

The source of the crash seems to be this message:

JNI ERROR (app bug): local reference table overflow (max=512)

local reference table dump:
Last 10 entries (of 512):
511: 0x13232520 java.lang.ClassNotFoundException
510: 0x74737358 java.lang.NoClassDefFoundError
509: 0x132324e0 java.lang.String "java.lang.invoke... (37 chars)
508: 0x12e6c320 dalvik.system.PathClassLoader
507: 0x1315ef10 java.lang.Class[] (1 elements)
506: 0x13230c40 float[] (16 elements)
505: 0x1315ef00 $Proxy8
504: 0x1315ee10 java.lang.Class[] (1 elements)
503: 0x1301b680 android.view.Surface
502: 0x12e1c880 android.os.Message
Summary:
1 of java.lang.ClassNotFoundException
127 of float[] (16 elements) (127 unique instances)
63 of android.view.Surface (63 unique instances)
1 of dalvik.system.PathClassLoader
1 of java.lang.NoClassDefFoundError
128 of java.lang.Class[] (1 elements) (128 unique instances)
1 of java.lang.String
127 of $Proxy8 (127 unique instances)
63 of android.os.Message (3 unique instances)

Runtime aborting...
​

So something is causing unbound growth of JNI local references somewhere. It could be video or something else (the video implementation does make use of JNI in certain scenarios).

But it's the first time we hear of this issue, so there probably is something specific to the media you're playing or to the device/OS version. Have you tried playing different footage (vary resolution, frame rate or format)? Is this happening on other devices?

But regardless, I do recommend submitting a bug report with footage so we can take a close look.

Dominique