First of all, you need to make sure that the problem video has been converted to the correct format.
Please note that HTML5 players can only play:
Codec requirements:
- For video - h.264
- For audio - AAC
Videos in excellent containers (for example: MOV, MKV, AVI) and using other codecs
will not play. The files must first be transcoded.
If the transcoding option is not active, contact your manager to activate it.