Video Handheld.PlayFullScreenMovie not always playing (online streaming)

Hi,

I'm having trouble with video playback using Unity's Handheld.PlayFullScreenMovie function on Android, Unity 2017.1.1p1 (also happened with 2017.1.0f3)

Sometimes it works, some others just don't (I get a black screen, no sound, with no errors/crashes).

I'm always passing the same url, so it's ok to say that the problem is not attached to the video, which is an mp4 container with h.264 fast-decode compression, sub-hd resolution and simple 128k 44khz mono audio. I also tried with other options, like 720p, fast-decode off, CBR, VBR, stereo sound... none of them solves the problem.

Connected with Android Device Monitor I get no errors or warnings, except when I close the video (I use the option CancelOnInput), when I get these lines:

• pause called in state 8
• error (-38, 0)

Anybody got the same problem? Any clue to solve it?