in my testproject, a video with an alpha channel (webM - transcoded in Unity to VP8) and material "mobile/particles/alpha blended" starts to play as soon as the image target has been found. But the first frames of the video are always white after the tracker has been found. Searching the forums, i found older threads (2014/15) with similar problems, but i could not find a solution for my purpose. Could somebody help me with this issue.
Thanks in advance,