How to reproduce:
1. Open attached Unity project
2. Build and Run SampleScene

Expected result: Video starts to play right after application is launched.
Actual result: Application is launched, but the video doesn't start to play. Screen stays with a background color.

Reproduced with: 2018.3.3f1, 2017.4.19f1.
Not reproduced with: 2019.2.0a3, 2019.1.0b1.

Devices under test:
Reproduced on:
VLNQA00067, Motorola RAZR D1 (XT914), Android 4.1.2, CPU: MediaTek MT6575, GPU: PowerVR SGX 531
VLNQA00105, Htc One X (HTC One X), Android 4.2.2, CPU: nVIDIA Tegra 3 AP33, GPU: NVIDIA AP
VLNQA00043, Samsung Galaxy S3 Mini Value Edition (GT-I8200N), Android 4.2.2, CPU: Marvell PXA988, GPU: GC1000 Graphics Engine

Not reproduced on:
VLNQA00046, Samsung Galaxy Trend Plus (GT-S7580), Android 4.2.2, CPU: Broadcom BCM21664T, GPU: VideoCore IV HW
VLNQA00104, Lge Nexus 5 (Nexus 5), Android 6.0.1, CPU: Snapdragon 800 MSM8974, GPU: Adreno (TM) 330
VLNQA00058, Sony Xperia Z (C6603), Android 4.4.4, CPU: Snapdragon S4 Plus MSM8960, GPU: Adreno (TM) 320
VLNQA00106, Samsung Galaxy S2 Plus (GT-I9105P), Android 4.2.2, CPU: Broadcom BCM28155, GPU: VideoCore IV HW

Fixed in: 2019.2.0a5, 2019.1.0b5, 2018.3.8f1.