How to reproduce:
1. Open the attached project
2. Make sure ControlManager in Hierarchy has assigned "3DH-Take1-Side-By-Side-4000x2000" video to Element 1 (Video Controls script)
3. Build and run Render texture scene on iOS device
4. First video will start playing
5. Click Next video (>I) button 3 times
6. mp4_sample.mp4 video should start playing
Result: application crashes
Note: In case it doesn't crash repeat step 5 or click Next video (>I) button once and then Previous video (I<) button once

Workaround: Using "Direct" Audio Output Mode of the VideoPlayer works fine (bug is limited to "Audio Source" mode)

DUT(reproducible):
iPad Air iOS 8.1.1
iPhone 6+ iOS 10.1

DUT(not resproducible):
iPad mini 4 (iOS 9.2.1)
137, Samsung Galaxy S8 [SM-G950F], 7.0.0, 1440x2960, Mali-G71
69, Meizu MX5, 5.0.1, PowerVR
Editor OSX 10.12.4

Reproducible: 5.6.2p4, 2017.1.0f2, 2017.2.0b5

Video: mp4_sample.mp4, 1280x720, H264, 1206kb/s, Main@L3.1, AAC/LC, 6, 48 kHz
Note: it crashes and with other render modes