When i use a looped video which loops perfectly in adobe premier, it has a slight hesitation when it is looped in vMix when it reaches the end and then restarts.

I'm using h264 encoding in an MP4 wrapper, i tried MOV with MJPEG but that would play only the audio and intermittant video.

Is the slight delay at the restarting of the loop down to the video format or vMix?, i need the audio as well so image sequences are not going to work for me.