DisplayFile show transcoding
If a file is still transcoding it shouldnt be usable in the frontend and show the progress of the transcoding job.
Notes:
Kein mp4 und kein Job Standart video -> Waiting to be transcoded
Kein mp4 und Job startet video -> will be transcoded and process with refresh 4sec.
mp4 kein problem -> Checken nach preview. alles supi!