I dont't need it anymore, I managed to find some other video with DV profile 8.1
Could you please check out version 1.3.2-alpha3? It should work with Oppo (and older LG TVs) and have the codec set correctly to 'dvhe'.
1.3.2-alpha3: https://github.com/bbeny123/mp4muxer/re ... 3.2-alpha3