Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
476 views
in Technique[技术] by (71.8m points)

objective c - iPad Video with Transparency

is it possible to have a QuickTime video with alpha layer (transparency) play on top of a static dynamic background UIView (i.e. a view that changes occasionally) on the iPad?

Thanks!

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Just to clear up the misinformation, you can't use a video with an alpha channel using the built in video logic in iOS. You can create a Quicktime movie encoded with the Animation codec and load the video into a view or layer using AVAnimator. What you can't do is create a H264 video with an alpha channel, that is simply is not supported by iOS.

display movies with an alpha channel under iOS


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...