Wikitude

Hello,

Could you please send over a video you are trying with so that we can test it internally? Also, please include the following details:

• Which version of the SDK are you using?
• Are you using the JS API?
• Are you using any of our Extensions (Titanium, Cordova, Xamarin, Unity)? If yes, which version are you using?
• What device does this happen with (os Version and model)?

Thanks

Eva

Hi,

Please keep in mind that response times in the forum may vary according to the severity of a possible issue, time needed for investigation and checking. If you have a subscription then you can request for priority support.

Regarding the video you sent over, this is not exactly a transparent video. The arrangement of one video being on top, the other on the bottom is correct but what I do not understand is the gray areas. The mask should be only black and white. Because of these gray areas the video is being rejected when you are testing with iOS.

I would advice you have a look at our tutorial here and follow exactly the steps described there.

Thanks

Eva

Good morning,

the convert.sh/.bat scripts we offer actually do require a different kind of input that what you are giving them, I suspect. It does not require a video containing the actual green in it, but a video for which the green has been removed in favour of transparent values (alpha value 0). The script will, to my understanding, produce a mask (lower half of the converted video) based on the alpha values; white for opaque pixels (alpha 1) and black for transparent pixels (alpha 0). I'm not perfectly sure what will happen for values in between; my guess is that they will be converted to shades of grey, causing the video to be semi-transparent.

Since the lower half of your converted video is all white, I suspect that your input video does not contain any transparent pixels.

Here's the relevant documentation page and the relevant excerpts from it:

        Edit that video using standard video processing software and remove the green screen. Export your result into a file format, which can handle alpha channel information (e.g. Apple ProRes 4444)

        There are different video codecs that support alpha channels for motion picture and most of them will work as your raw material. We have extensively tested Apple ProRes 4444 codec for our own development and were satisfied with the results.

Since the Lamborghini video you provided seems to me to be computer generated, there's no need to bother with any green background at all. You should simply be able to render the video with a transparent background directly.

- Daniel

Good morning,

have you tried to export your video to a different container format? Or use a different encoding for the audio? I could easily imagine Android having issues with .mov containers (Apple's QuickTime file format). You could just try something like .avi or .mkv and see whether that makes a difference.

Also, the media players of the two platforms are certain to have different capabilities in terms of codec compatibility. So finding an encoding that works on both platforms might require a bit of tweaking.

- Daniel