How to reproduce:
1. Open the attached project
2. Sample scene is very simple, it has Video Player attached to Main Camera with all default settings
3. Make sure that Graphics API is set to Vulkan
4. Build and run sample scene on android device
5. If it didn't crash, press on screen
Result: crash

Reproducible: 2019.2.0a2, 2019.2.0a1
Not reproducible: 2019.1.0a15

Tested and reproduced:
VLNQA00122, Samsung Galaxy S9 (SM-G960F), Android 8.0.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
VLNQA00138, Huawei P20 Pro (CLT-L29), Android 8.1.0, CPU: HiSilicon Kirin 970, GPU: Mali-G72
VLNQA00123, Google Pixel 2 XL (Pixel 2 XL), Android 9, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540

Tested and didn’t reproduce (because it fallbacks to GLES3):
VLNQA00176, Xiaomi Redmi 4 (Redmi 4), Android 6.0.1, CPU: Snapdragon 430 MSM8937, GPU: Adreno (TM) 505
VLNQA00155, Meizu PRO 7 Plus (PRO 7 Plus), Android 7.0, CPU: MediaTek Helio X30 MT6799, GPU: PowerVR Rogue Marlowe
VLNQA00223, Samsung Galaxy S4 (GT-I9505), Android 5.0.1, CPU: Snapdragon S4 Plus MSM8960, GPU: Adreno (TM) 320
VLNQA00036, Motorola Moto G (1st Gen) (XT1032), Android 5.1, CPU: Snapdragon 400 MSM8226, GPU: Adreno (TM) 305

Tested both videos ad both crash:
Groot_H264_AAC_1280x720.mp4
VP8_SD_360p.webm

Not reproducible with GLES3