NVidia Shield Pro - Optimized files have no video, just audio

[Vivisector]

Happened to me as well, there was no way to make optimizer produce playable files.
Link to the old post:

Error playing pre-optimized downloaded content - transcode issue

Hello, I also have issues with the transcoded videos - they do not play correctly neither on Android phone nor Ipad. I wonder if anyone has experienced something similar? The source is MKV 1080p, no HDR. I select “Optimized for Mobile” quality (tried also to set up Custom 4Mbps 720p), conversion uses HW encoding (4x - 5x speed). When I sync the optimized version to both Android phone and Ipad, they do not play. Clicking “Play” starts the player, I can hear ~ 5 seconds of sound, but no video, a…