Hi Nemanja 

I can't seem to post this as a reply... I tried switching of URL based transformations but when I embed the video it simply displays "the author has turned of URL based transformations" (or something like that). 

I'm not sure what "streamable markers" are or how I can add it? (maybe you can guide me on this)

Here is the URL to a video: https://media.publit.io/file/Graad7Junie/Vraestel2/quuHmkPp.mp4 (it's just an example - for this one file transformations are switched to "on"). I have 100s of videos that I need to upload.

I tried sending a message with the "contact us" form but haven't had a response yet. If you would prefer we continued this conversation there then you can just reply to that message.

Regards

Luandrn