Transparent background HOW?

Discussion in 'Digital Video' started by africano, Nov 22, 2016.

  1. africano macrumors member

    Joined:
    Jul 7, 2011
    #1
    Hi,

    I have seen an example of a video of someone talking on top of their business card. So, when it is scanned with an app (augmented reality) it trigger the video to play and the video has a transparent background. This means that the person appears to be standing in the business card.

    I have videoed in front of a green screen but I cant figure out how to export the video with NO background....at the moment I have either the video with green screen behind or with a black background after exporting from greenscreen app.

    Can someone help??

    Thanks (I have been assured that it is easy....and that a tutorial is coming but I want to figure it out first!)

    Thanks!
     
  2. dorsal macrumors member

    Joined:
    Aug 20, 2002
    #2
    The black background is your alpha channel. You need to combine that file with your business card file. Many apps can do it.
    Such as this for iMovie:
     
  3. BeechFlyer macrumors regular

    BeechFlyer

    Joined:
    Nov 5, 2015
    Location:
    Cedar Rapids, IA
    #3
    You need to export the green-screened clip using a codec that supports the alpha channel (i.e. transparency). Many codecs don't, that's why you end up with a black background instead. Try ProRes4444; it creates large files but handles alpha well. If that doesn't work, try the Animation codec.

    Also, if you get a choice between "Millions of Colors" and "Millions of Colors+", choose the latter.

    I hope this helps!
     
  4. africano thread starter macrumors member

    Joined:
    Jul 7, 2011
    #4
    Thanks for the replies....but need further clarification....at this point I have recorded the video and saved from GreenScreen App.

    My video has a black background (after exporting from GreenScreen App). Now what do I do.....What program do I use?

    Thanks.
     
  5. africano thread starter macrumors member

    Joined:
    Jul 7, 2011
  6. BeechFlyer macrumors regular

    BeechFlyer

    Joined:
    Nov 5, 2015
    Location:
    Cedar Rapids, IA
    #6
    I don't know the app you are using. What export options does it give you, in terms of codec and other settings?

    The fact that you are seeing a black background (instead of transparency) suggests that you need to export it differently. Again, ProRes 4444 is your friend. But without knowing what options your app supports, I don't know what else to tell you.

    Have you contacted the app's support?
     

Share This Page