How to reproduce:
1. Open the attached project
2. Build and run RenderTexture scene on Android device
3. Let H264 video loop
Result: After first play video doesn't loop

Reproducible: 5.6.2f1 , 2017.1.0f2, 2017.2.0b1
Note: in 2017.2.0b1 video almost doesn't play

DUT(reproducible):
12, HTC One [PJ4610000], OS 4.2.2, GeForce, NVidia Tegra

Videos:
Groot_H264_AAC_176x144.mp4,176x144,H264 avc,Baseline@L3.1,12,61.8 kb/s,AAC/LC,2,24.2 kb/s,44.1kHz
Groot_H264_AAC_480x360.mp4, 480x360 H264 avc Baseline@L3.1,30,545 kb/s,AAC/LC,2,129 kb/s,44.1kHz
Groot_H264_AAC_1280x720.mp4, 1280x720,H264 avc, Baseline@L3.1, 30, 2137 kb/s,AAC/LC,2,192 kb/s,44.1kHz