The video requirements for Connected TV are:
resolution 1080p or higher
between :15 and :30 seconds
file size 15 - 50 Mb
.mp4 or .mov* file type
minimum bitrate between 1200 - 1500 kbps
*Almost all Brandzooka Connected TV ad spots require an .mp4, so you should absolutely convert your video to this format in order to increase your reach.