Certain subtitle formats cannot be directly streamed, so your server is probably re-encoding video on the fly to burn in the subtitles. PGS format is actually a series of images and will always require re-encoding video. Picking SRT should work with device direct streaming.
Certain subtitle formats cannot be directly streamed, so your server is probably re-encoding video on the fly to burn in the subtitles. PGS format is actually a series of images and will always require re-encoding video. Picking SRT should work with device direct streaming.