Hi,
An mp4 video created in an iMessage Extention App doesn't autoplay in iMessage - requires tap on it to play.
How to format video file so it will start loop-play in iMessage?
Thanks!
Hi,
An mp4 video created in an iMessage Extention App doesn't autoplay in iMessage - requires tap on it to play.
How to format video file so it will start loop-play in iMessage?
Thanks!
You need to set the appropriate metadata tag in the mp4 video. See the "LOOP" user data atom in https://developer.apple.com/library/content/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html.
Is there a way to hide play button from this looped video?
How does one actually set the user data LOOP atom in a AVMutableMetadataItem? There seems to be no type for it defined, such as there is for quickTimeUserDataKeyAuthor
Thinking something like this?
let metadata = AVMutableMetadataItem()
metadata.keySpace = AVMetadataKeySpace.quickTimeUserData
metadata.key = "LOOP" as NSCopying & NSObjectProtocol
metadata.value = UInt32(0) as NSCopying & NSObjectProtocol
let exporter = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetHighestQuality)
exporter.metadata = [metadata]
But doesn't have any effect on the video...