Definition
WebCodecs defines VideoFrameInit
dictionary VideoFrameInit {
unsigned long long duration; // microseconds
long long timestamp; // microseconds
AlphaOption alpha = "keep";
// Default matches image. May be used to efficiently crop. Will trigger
// new computation of displayWidth and displayHeight using image’s pixel
// aspect ratio unless an explicit displayWidth and displayHeight are given.
DOMRectInit visibleRect;
// Default matches image unless visibleRect is provided.
[EnforceRange] unsigned long displayWidth;
[EnforceRange] unsigned long displayHeight;
VideoFrameMetadata metadata;
};