I am working on a XT1143 unit..
1. Are there any video formats supported that allow for an alpha channel?
I have a video rendered with a frame around it that needs to be rendered on top of my html content. I can render a H264 with transparency and it works correctly in Chrome, but not on the player.
2. I see that we have the option to assign Luma/Chroma keys to footage, but I cannot figure out how to use it. The documentation on this is extremely vague.
How would I luma/chroma key pure red? #FF0000
What is cr-key and cb-key?
From docs:
HWZ VIDEO TRANSPARENCY EXTENSIONS
If "hwz" is enabled for a <video> element, the video window can also support luma and chroma keys for video transparency. The z-index: parameter must also be specified for transparency to work. The luma and chroma keys are specified as follows:
-
luma-key:[HEX_VALUE] -
cr-key:[HEX_VALUE] -
cb-key:[HEX_VALUE]
And I do know about this:
https://github.com/brightsign/BrightAuthor-Plugins/tree/master/ChromaLuma-Key-Editor
But it does not help explain how to key specific colors.
Thanks for any help!
