Roku Streamtester player doesnt seem to play video when using trickmode as mentioned here:https://dashif.org/docs/DASH-IF-IOP-v4.2-clean.htm#_Toc511040730
Roku now support getting thumbnails from manifest, you can check their samples.
Were you able to resolve your issue ?
how did it play out ?
Roku now support getting thumbnails from manifest, you can check their samples.