Reproduction steps:
1. Download and open the attached project "1318279.zip"
2. Open the Addressables Groups window (Window -> Asset Management -> Addressables -> Groups)
3. Clean Addressables build cache (Build -> Clean Build -> All)
4. Build Addressables (Build -> new Build -> Default Build Script)
5. Build and run on Android

Expected result: Video plays on build
Actual result: Video does not play on build

Reproducible with: 1.8.3 (2019.4.22f1), 1.17.5-preview (2020.2.7f1, 2020.3.0f1, 2021.1.0b11, 2021.2.0a8)
Not reproducible with: 1.8.3 (2018.4.32f1) (The video scene would not load on any device)
Could not test with: Addressables 1.7.5 and below (Building Addressables would fail)

Reproduced on:
VLNQA00013, Samsung Galaxy S6 Edge Plus (SM-G928F), Android 7.0, CPU: Exynos 7 Octa 7420, GPU: Mali-T760
VLNQA00285, Samsung Galaxy J4 Core (SM-J410F), Android 8.1.0, CPU: Snapdragon 425 MSM8917, GPU: Adreno (TM) 308

Does not reproduce on:
VLNQA00122, Samsung Galaxy S9 (SM-G960F), Android 10, CPU: NOT FOUND, GPU: Mali-G72
VLNQA00331, Huawei P20 lite (ANE-LX1), Android 9, CPU: HiSilicon Kirin 659, GPU: Mali-T830
VLNQA00321, Xiaomi MI 9 (MI 9), Android 10, CPU: Snapdragon 855 SM8150, GPU: Adreno (TM) 640
iPad 9.7" 6th gen (14.4)
iPad Air 2 (11.0.3)
iPhone XR (13.4.1)
iPhone 8 Plus (12.0)
iPhone 12 Pro (iOS 14.2.1)