Steps to reproduce:
1. Open new unity project
2. Add attached video to video player component and have it play on Camera plane (doesn't matter how, just to output it somewhere)
3. Build and run on Android device with Vulkan graphics API
4. Video will play first frame and stop

Expected: Video should play from start to finish
Actual: Video gets stuck after first frame

Repro with:
Version 2019.1.0a12 (9be92e220659)
Thu, 06 Dec 2018 23:39:55 GMT
Branch: platform/android/vulkan-video-player

Devices Under Test:
Repro:
VLNQA00216, Razer Phone 2 (Phone 2), Android 8.1.0, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630
VLNQA00217, Razer Phone 2 (Phone 2), Android 8.1.0, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630

No Repro:
VLNQA00003, Razer Razer Phone (Phone), Android 7.1.1, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
VLNQA00142, Samsung Galaxy S9+ (SM-G965U1), Android 8.0.0, CPU: Snapdragon 845 SDM845, GPU: Adreno (TM) 630
VLNQA00220, Samsung Galaxy Note9 (SM-N960F), Android 8.1.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
VLNQA00093 Samsung Galaxy S6 edge (SM-G925F) Mali-T760 Exynos 7 Octa 7420 Android 7.0
VLNQA00138 Huawei P20 Pro (CLT-L29) Mali-G72 HiSilicon Kirin 970 Android 8.1.0
VLNQA00101 Samsung Galaxy Note8 (SM-N950U) Adreno (TM) 540 Snapdragon 835 MSM8998 Android 8.0.0
VLNQA00136, Samsung Galaxy S9+ (SM-G965F), Android 8.0.0, CPU: Exynos 9 Series 9810, GPU: Mali-G72
VLNQA00129, Nvidia SHIELD Tablet (SHIELD Tablet), Android 6.0.1, CPU: nVIDIA Tegra K1 T124, GPU: NVIDIA Tegra