Is FMV Video player limited to play .ts format? Is it limited to MPEG-2 video track?
ArcGIS Pro can play several non-spatially aware formats, but .ts is the only container format that can contain a spatial data stream. The .ts container format is not limited to MPEG-2; it can also contain MPEG-4, H.264 and H.265, all of which Pro can play.